ASP.NET 4.5 has been improved and latest version ASP.NET. It includes an array of new and modified features. Today we’ll discuss one new feature Unobtrusive Validation that is introduced with ASP.NET 4.5 .

So what is Unobtrusive Validation?

In a normal validation scenario,when we use a validator to validate any any control and use Client side validation, some JavaScript is generated and rendered as HTML. Also some supportive JavaScript files is also get loaded by the browser for the validation.

Now with feature Unobtrusive Validation, inline JavaScript is not generated and rendered to handle the Client Side validation. Instead of this it uses HTML5 data-* attributes for all these validation.

So now lets see a normal scenario. I have taken textbox and applied two ASP.NET validators on it. One is RequiredFieldValidator and RangeValidator that allows to enter the value between 100 and 1000. Let’s see the aspx code.



Now Lets run the application and see the generated the HTML. Now if you look at the View Source of the page



To handle these validation, it generates the lots of JavaScript code on the page. It is



Now I have made the same application with Visual Studio 2011 Developer Preview. By default Unobtrusive Validation is enabled here. So lets see the generated HTML



Now if you see the above generated HTML, there are few data-* attributes are rendered. And these hold all the required information of the validator. And there is no inline JavaScript code generated. This reduces the significant amount of page size because here inline JavaScript code is not generated and this also makes the rendered HTML neat and clean.

So let’s see how asp.net 4.5 allows to configure the Unobtrusive Validation. There is one new property UnobtrusiveValidationMode got added, which can be assigned two values

- None : means UnobtrusiveValidation is set to off
- WebForms : means UnobtrusiveValidation is enabled

This property can be configured at three places in application. These are

1. First it can be set at application level in config file. We need to add it in the <appSettings> element.

<add name="ValidationSettings:UnobtrusiveValidationMode" value="WebForms" />

As I discussed it is by default enabled in asp.net. The above key by default added in web.config. So if you want to disable it then change the above as

<add name="ValidationSettings:UnobtrusiveValidationMode" value="None" />

2. We can also set it at Application_Start method in Global.asaxfile as

void Application_Start(object sender, EventArgs e)
{
   //Enabling UnobtrusiveValidation application wide
   ValidationSettings.UnobtrusiveValidationMode = UnobtrusiveValidationMode.WebForms;
}

3. We can also set it at page level by setting the property of Page Class as

Page.UnobtrusiveValidationMode = System.Web.UI.UnobtrusiveValidationMode.WebForms;

While working with ASP.NET web application you must be familiar with one of most important state management technique “Session”.

ASP.NET Session State is on by default, hence you are paying for memory even if you don’t use it. There are several ways to optimize it.

Tip #1 : Not using Session State at all ? Then turn it off completely in web.config



Tip #2 : Session is only required for few pages not all over the application



then enable it for a specific page where you required the session



Tip #3 : If you are using Session for Reading Purpose, use Session State as “ReadOnly”

If you are a beginner, you must be wondering what is EnableSessionState=”Readonly” . Well, if you look at your web application, not all the pages using Session or some of the pages is using session data for reading purpose. If there is no write operation happaning on session, then it’s always better to use session State is “ ReadOnly”



The session request pass through different httpModule with in HTTPPipeline. Know more details on how session state ReadOnly works , please read the article Read Only Session State in ASP.NET.

You can also set ReadOnly SessionState in web.config as well



Tip #4 : Programmatically Change Session State Behavior when required (ASP.NET 4.0)

We can enable or disabled session state either in web.config or using @Page directive’s EnableSessionState attributes. But there was no provision to change the session state at runtime till date in ASP.NET. But using ASP.NET 4.0, we can change the session state programmatically . The .NET 4.0 framework adds a new method SetSessionStateBehavior to the HttpContext class for ASP.NET. This method required SessionStatebehavior value to set the current session mode. To call SetSessionStateBehavior simply create a new HttpModule by Implementing IHttModule and hook the BeginRequest event. Most important you can only use the SetSessionStateBehavior until the AcquireRequestState event is fired, because AcquireRequestState Occurs when ASP.NET acquires the current state that is associated with the current request

While calling SetSessionStatebehavior, You can pass the following values as SessionStatebehavior :

- Default: This is default setting which means everything works as before
- Disabled: Turned of Session Sate for Current Request.
- ReadOnly: Read only access to Session State;
- Required: Enabled session state for both Read and Write Access



Tip #5 : Compress Session Data while using OutProc Session mode based on Requirements (AP.NET 4.0)

ASP.NET 4.0 comes with a new option for compressing the Session data with Out Process Session mode. To enabling this functionality we need to add “ compressionEnabled=”true” attribute with the SessionMode in web.config.



When Compression mode is enabled is web.config, ASP.NET compress the serialized session data and passed it to session storage and during retrieval same deserialization and decompression happens in server side. ASP.NET 4.0 used System.IO.Compression.GZStream class to compress the session mode.



Tip#6 : Use HttpContext.Current.Items for very short term storage instead of Session

You can use HttpContext.Current.Items for very short term storage. By Short term storage means, this data is valid for a single HTTP Request. There are many confusion around regarding storing data in HttpContext.Current.Items and storing data in Session variable. Items collections of HttpContext is and IDictionary key-value collections and that are shared across a single HTTPRequest. Yes, HttpContext.Current.Items valid for a single HTTPRequest.



Hope the above tips helps you.

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You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

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Short, simple URLs improve a site’s search engine optimization, usability, and security.  URL rewriting and routing can be used to accomplish this.  URL rewriting/routing improves SEO by distilling URLs down to a set of keywords that search engines can easily parse.  It improves usability by abstracting the file structure of the site, which may change, and presenting a simplified site structure.  It improves security by hiding the details of how a site is implemented by removing querystring and file suffixes.

Before the release of IIS7 and .Net 3.5, most ASP.Net developers implemented URL rewriting by one of the following methods:

1.       Implementing ISAPI filters for IIS

2.       Developing their own HttpModule

3.       Licensing a configurable third party ISAPI filters like ISAPI Rewrite, or HttpModule like UrlRewriter.Net.

With the introduction of IIS7, Microsoft released an add-on module that implements URL rewriting.  The URL Rewrite module works similarly to ISAPI filter based URL rewriting, but has the advantage of being more closely integrated to the web server.  The configuration is XML driven by settings added to the web.config.  The module can map URLs based on regex pattern matching, or by a list of 1-to-1 URL mappings.  In addition, configuration can be done through the IIS7 GUI.

The diagram below shows how URL rewriting using the URL Rewrite Module for IIS7 works.



Pros:

·         Easy to implement

·         Mapping changes do not require a recompile and code deployment

·         Management through IIS7 UI

Cons:

·         Can’t be integrated with a CMS or database driven URL maps

·         No built-in functionality for reverse lookups

·         Locks you in to using IIS7

.Net 3.5 introduced ASP.Net routing, a new way of mapping URLs to HttpHandlers.  ASP.Net routing works differently from any form of URL rewriting.  URL rewriters change an incoming request’s URL and then hands off the request.  ASP.Net doesn’t change the request URL.  Instead, it loads HttpHandlers directly based on its mapping logic.

The following diagram shows how ASP.Net rewriting fits into the request processing pipeline.



Pros:

·         Easier to integrate with CMS or database driven URL mappings

·         Reverse mapping is easier if you build for it

·         Custom implementation offers greater flexibility – like giving developers a neat way of doing A/B testing

Cons:

·         Easy to turn into spaghetti code

·         Changes to mapping logic often require a recompile and code redeploy

·         Takes more effort to implement

For more explanation about the differences between these two methods, read this article.

These two methods can be combined to get some of the advantages of each.  The following example involves an ASP.Net site that contains pages managed by a content management system.  We’d like to have some of the ease of implementation, and maintenance from the IIS module, but we also need to allow some URL mappings to be controlled by the CMS.

The following shows the web.config settings for the IIS Rewrite Module.  The first rule applies the 1-to-1 mappings in the Custom Mappings rewriteMap section.  The second rule routes page requests to four main categories within the site to paths that the ASP.Net URL rewriter module will handle later on in the request lifecycle.

<rewrite>
       <clear />
       <rule name="Apply Custom Rewrite Map" enabled="true" stopProcessing="true">
              <match url="(.*)" />
              <conditions logicalGrouping="MatchAll">
                     <add input="{Custom Mappings:{PATH_INFO}}" pattern="(.+)" />
              </conditions>
              <action type="Rewrite" url="{C:0}" appendQueryString="true" />
       </rule>
       <rule name="Product Type Pages" stopProcessing="true">
              <match url="^(Music|Movies|Games|Accessories)(/)?$" />
              <conditions logicalGrouping="MatchAll" />
              <action type="Rewrite" url="Pages/{R:1}" />
       </rule>
       <rule name="All Other Pages" enabled="true" stopProcessing="true">
              <match url="^([_0-9a-z-]+)(/)?$" />
              <conditions logicalGrouping="MatchAll" />
              <action type="Rewrite" url="Pages/{R:1}.aspx" />
       </rule>
       <rewriteMaps>
              <rewriteMap name="Custom Mappings">
              <add key="/Home" value="Pages/Default.aspx" />
              <add key="/Search" value="Pages/Search/Default.aspx" />
              <add key="/Admin" value="Pages/Admin/SiteAdmin.aspx" />
       </rewriteMap>
       </rewriteMaps>
</rewrite>

The following shows the web.config setting for ASP.Net routing.

<addassembly="System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

… 

<httpModules>
       <addname="UrlRoutingModule"type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</httpModules>

In ASP.Net routing, we don't explicitly implement the HttpModule. Instead we create a class that implements the IRouteHandler interface and load this class in the Application_Start() event handler of the global.asax.

Here is our implementation of the IRouteHandler interface:

public class RouteHandler<T> : IRouteHandler where T : IHttpHandler, new()
       {
              public string VirtualPath { get; set; } 

              public RouteHandler(string virtualPath)
              {
                     this.VirtualPath = virtualPath;
              } 

              public IHttpHandler GetHttpHandler( RequestContext requestContext )
              {
                     IHttpHandler ret = null;
                     foreach ( var value in requestContext.RouteData.Values )
                     {
                           requestContext.HttpContext.Items[ value.Key ] = value.Value;
                     } 

                     ret = ( VirtualPath != null )
                           ? (IHttpHandler)BuildManager.CreateInstanceFromVirtualPath(
                           VirtualPath, typeof( T ) )
                           : new T(); 

                     return ret;
              }
       }

Most of this code is boiler plate to load an HttpHandler based on the mappings that you load up in the Application_Start() handler.

Our example site uses URL mappings defined in an XML file exported by a CMS. So we call a method in the Application_Start() handler in the global.asax that loads this XML file and creates a route for each entry. We do a bit of hand waving here by excluding the code for the CMS.Common.GetRoutes() method because it's probably unnecessary to go over the details parsing an XML.

void Application_Start(object sender, EventArgs e)
{
       RegisterRoutes(RouteTable.Routes);
} 

public static void RegisterRoutes(RouteCollection routes)
{
       CMS.Route[]cmsRoutes = CMS.Common.GetRoutes(); 

       foreach (CMS.Route iCmsRoute in Booking cmsRoutes)
       {
              routes.Add(iCmsRoute.Name, new Route
              (
                      iCmsRoute.RequestPath,
                      new CustomRouteHandler(iCmsRoute.HandlerPath)
              ));
       }
}

Custom mapping URLs to HttpHandlers allows us to create websites with improved SEO, usability and security. The IIS7 URL Rewrite module and ASP.Net routing are two useful tools to map URLs. Each has its advantages and disadvantages, but can be used together to meet various URL mapping requirements.

After running a ASP.NET website on IIS 7.5 for the first time on a Windows 7 computer, sometimes you will face this problem:

Login failed for user 'IIS APPPOOL\ASP.NET v4.0'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.


Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'IIS APPPOOL\ASP.NET v4.0'.

To fix this issue, try changing the (Process Model) Identity of your website's Application Pool to use the NetworkService account (or the less secure LocalSystem account).  By default, IIS7 seems to set the Application Pools Identity to 'ApplicationPoolIdentity', instead of NetworkService or LocalSystem. 

Here's a step-by-step guide for determining your websites Application Pool, then changing its Process Model Idenitty in IIS7: 

1.       Open Internet Information Services (IIS) Manager.

2.       In the Connections sidebar, drill down into Default Web Site and click on your website.

3.       Now in the Actions sidebar (on right side), click on Advance Settings... In the popup box, under General you will see your Application Pool listed for your website (in my case the app pool is: ASP.NET V4.0).

4.       Click Cancel...  If you choose, you can change the Application Pool here, but for the sake of this example we just wanted to find out what the website's App Pool was.

Now that we know the Application Pool that is configured for your website, we now want to change the app pool's (Process Model) Identity to 'NetworkService', here's how:

1.       Open Internet Information Services (IIS) Manager.

2.       In the Connections sidebar, click on Application Pools.

3.       Now right-click on theApplication Pool that your website is using (in this case my site is using the ASP.NET v4.0 application pool), and select Advanced Settings... from the menu.

4.       In the Advanced Settings pop-up box, locate the Process Model -> Identity section and click on the Application Pool Identity. 

5.       In the Application Pool Identity pop-up box, change the Built-in account to NetworkService (or if you want LocalSystem), then click OK, and click OK again to save your Advanced Settings changes.

After changing the Application Pool's Identity to NetworkService (or LocalSystem) you should now be able to get your ASP.NET site to run successfully on an IIS7 web server. Good luck!!

Think of ASP.Net web page as a container control containing a set of controls that will render themselves in response to a page request. Here, I'll show you different approaches to add controls (a control can be HTML or server side or System.Web.UI.Control) to ASP.Net web page programmatically at runtime.

Let's quickly create ASP.Net web site and add a new Webform named 'dynamically-add-controls-to-aspnet-page.aspx', say. Set it as 'Start up page' and hit the run button. The page will render with five invisible controls i.e. form1, title and some LiteralControls etc and shows no content.

To add Controls after the </HTML> (at the page bottom): Paste the following code in code behind:

1 public partial class dynamically_add_controls_to_aspnet_page : System.Web.UI.Page 
2 { 
3     protected void Page_Load(object sender, EventArgs e) 
4     { 
5         Label dynamicControl = new Label(); 
6         dynamicControl.Text = "Server side label control"; 
7         Page.Controls.Add(dynamicControl); 
8     } 
9 } 

To add Controls at some index in Controls collection: In the first approach the controls added would be stacked down in the rendering order and placed at page end. You can verify this by running the page and clicking the browser's 'View Source', check out the <span>dynamically added Server side label control</span> at the end. Now we'll see how to add controls dynamically at some place. Let's Paste the following code in code behind:

01 public partial class dynamically_add_controls_to_aspnet_page : System.Web.UI.Page 
02 { 
03     protected void Page_Load(object sender, EventArgs e) 
04     { 
05         Label dynamicControl = new Label(); 
06         dynamicControl.Text = "dynamically added Server side label control"; 
07         // it will dynamically add control right after <body> but before <form>: Check the browser's View Source code 
08         Page.Controls.AddAt(3, dynamicControl);         
09     } 
10 } 

Dynamically adding Controls asp:PlaceHolder control: Drag asp:PlaceHolder control from toolbox onto the webform. For reference see the following markup code:

01 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="dynamically-add-controls-to-aspnet-page.aspx.cs" Inherits="dynamically_add_controls_to_aspnet_page" %> 
02   
03 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
04 <html xmlns="http://www.w3.org/1999/xhtml"> 
05 <head id="Head1" runat="server"> 
06     <title>dynamically add controls to asp.net page</title> 
07 </head> 
08 <body> 
09     <form id="form1" runat="server"> 
10         <asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder> 
11     </form> 
12 </body> 
13 </html>  

1 public partial class dynamically_add_controls_to_aspnet_page : System.Web.UI.Page 
2 { 
3     protected void Page_Load(object sender, EventArgs e) 
4     { 
5         Label dynamicControl = new Label(); 
6         dynamicControl.Text = "dynamically added Server side label control"; 
7         PlaceHolder1.Controls.Add(dynamicControl); 
8     } 
9 } 

Note that we've added PlaceHolder1 inside the form1 control and in the code behind we're adding dynamicControl to it. Ultimately the set of control(s), that we might added to this PlaceHolder1, will get placed in place of PlaceHolder1. Verify via browser's View Source code.

Dynamically adding asp:Button Control to HTML DIV: Here we'll see how to add a button control to HTML DIV tag at runtime. For this add a DIV inside form tag named 'divHtmlControl' ,say and assign it runat="server" attribute. Paste in the following code in code behind:

01 protected void Page_Load(object sender, EventArgs e) 
02 { 
03     Button dynamicButtonControl = new Button(); 
04     dynamicButtonControl.Text = "dynamically adding asp:Button control to HTML DIV"; 
05     dynamicButtonControl.Click += new EventHandler(dynamicButtonControl_Click); 
06   
07     divHtmlControl.Controls.Add(dynamicButtonControl); 
08 } 
09   
10 protected void dynamicButtonControl_Click(object sender, EventArgs e) 
11 { 
12     Button button = sender as Button; 
13     button.Text = "Click event fired"; 
14

Introduction

In this article, I would like to share my experience and knowledge about ASP.NET Caching and how it can improve your website performance. As you all might know that performance is key requirement for any application or piece of code that you develop.  For mission critical website, Caching is the way to go to significantly enhance your web response times.  Caching is the process of storing frequently used data on the server to fulfill subsequent requests.You will discover that grabbing data or objects from memory is much faster than recreating the web pages or items contained in them from scratch.

When and Why use Caching

A Proper use and fine tune of caching approach of caching will result on better performance and scalability of your site. However improper use of caching will actually slow down and consume lots of your server performance and memory usage.

Good candidate to use caching is if you have infrequent chance of data or static content of web page.

For example, Stock market website displaying 20 minutes delay data can actually use data caching to store the data, so that it can reduce database call every time the user refresh the page.

Another good example would be using Partial page caching to store some of the infrequent or static content. If you have websites that show lots of information or features, you can actually group the static or infrequent change content into user controls and then set the Caching for that particular user controls. You can set the amount of time when the caching expires so that it will load new data from database

Type of Caching

1. Output Caching (Page Caching)

The most easiest and simple caching that you can implement. Good for caching the static page that is accessed frequently. You can copy and paste the code below on your ASP.NET page.

<%@ OutputCache Duration="60" VaryByParam="None" %>

Duration attribute specifies how long in seconds that the page will be held in the memory. When the cache expired, the asp.net engine will automatically reload and refreshes the page again. If the page never change, you can actually set the duration to very long period.

Valid Parameters for OutputCaching

- VaryByParam

The VaryByParam attribute is for caching different type of page based on the HTTP Post or HTTP Get Protocol e.g You can cache dynamic content based on different query string provided.

<%@ OutputCache Duration="60" VaryByParam="CategoryID" %>

In this case, asp.net engine will cache the dynamic page based on the different query string provided. If your page is generating different content based on the query string, then  you need to put that in the output cache directive or else all your users will see the same content.

If you want to cache a new version of the page based on any differences in the Query String parameters, use VaryByParam = "*" as in the following code.

<%@ OutputCache Duration="60" VaryByParam="*" %>

- VaryByControl

VaryByControl can be used to cache the usercontrol inside your page. For example you can cache a user control that contains ComboBox that render all the country name in the world. And perhaps those country data is retrieved from database, this will make significant performance for page loading time.

- VaryByCustom

To make the Cache object even more flexible, Microsoft built in the ability to cache the page based on a string, which is then controlled from the actual code of the application

It does have one "out of the box" property, Browser. When VaryByCustom is set to Browser the page is cached every time a different browser agent and major version number requests the page.

<%@ OutputCache Duration="60" VaryByCustom="browser" %>

If you like to have your own set of Caching rule ,then you might need to tweak some of the code in global .aspx. For e.g You might need to differentiate caching content for different set of users based on cookies called Language. Then you need to copy and paste the following code in your global.asax file.

Code in VB.NET

Overrides Function GetVaryByCustomString(ByVal context as HttpContext,_ByVal arg as String) As String
If arg.ToLower() = "cookies" Then
Dim cookie as HttpCookie = context.Request.Cookies("Language")
If cookie isNot nothing Then
Return cookie.Value
End if
End If
Return MyBase.GetVaryByCustomString(context,arg)
End Function

Code in C#

public override string GetVaryByCustomString(HttpContext context, string arg)
{
if (arg.ToLower() == "cookies")
{
HttpCookie cookie = context.Request.Cookies["Language"];if (cookie != null)
{
return cookie.Value;
}
}
return base.GetVaryByCustomString(context, arg);
}

After that , set the VaryByCustom attribute to "cookies" in your OutputCache directives.
By doing that you will generate different set of caching based on the Client languages cookies. This is just one of the example of doing VaryByCustom caching, you can actually create your own set of caching rules by differentiating caching based on user logged on, and etc.

- VaryByHeader

Varies cache entries based on variations in a specified header

2. Partial Page (UserControl) Caching.

Similar to output Caching, partial page caching allows you to cache certain blocks of your website.You can for example only cache the center of the page. Partial page is achieved with the caching of the user controls.  You can build your ASP.NET pages consisting of numerous user controls and then apply output caching on the user controls you select.  This will caches only parts of the page that you want and leaving other parts of page outside the reach of caching.
This is very nice feature and if it done correctly, it can lead to pages that perform better.

Note :
Typically UserControls are placed on multiple pages to maximize reuse. However, when these UserControls (ASCX Files) are cached with  the @OutputCache Directive , they are cached on per page basis.That means even if a User Control outputs the identical HTML when placed on pageA.aspx as it does placed on pageB.aspx,its output is cached twice.
You can prevent this to happen by adding Shared = true in the output cache directive.

<%@ OutputCache Duration="300" VaryByParam="*" Shared="true" %>

By putting Shared attributed, the memory savings can be surprisingly large.
If you have an ASCX User control using the OutputCache directive,remember that User Control exists only for the first request.

3. Data Caching

Output Caching and Partial Page caching is useful if you want to cache the output of the page. However if you like to cache DataSet object or any Collections object, you can use Data Caching to implement that.

ASP.NET has one class called Cache Object to start caching specific data items for later use on particular page or group of pages. The cache object enables you to store everything from simple name/value pairs to more complex objects like datasets and entire .aspx pages.

VB.NET

Cache("MyDataSet") = myDataSet;

C#

Cache("MyDataSet") = myDataSet;

To retrieve the data from the cache, you can use the code below.

VB.NET 

<strong>Dim ds as New DataSet
ds = CType(Cache("MyDataSet"),DataSet)
</strong>

C#

<strong>DataSet ds = new DataSet();
ds = (DataSet) Cache["MyDataSet"]; 

Conclusion

As we've just seen, caching Web pages with ASP.NET is amazingly easy, accomplished with a simple line. With this glimpse of ASP.NET's caching abilities, you can improve your Web application's performance. But remember Caching in ASP.net is a trade off between CPU and memory. How hard is it to make this page versus whether you can afford to hold 200 versions of it. If it's only 5KB of HTML, a potential megabyte of memory could pay off handsomely versus thousands and thousands of database access. Every page of request served from the cache saves you a trip to the database.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.

You may get this error when trying to browse an asp.net application.

Server Error in '/' Application

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level.  This error can be caused by a virtual directory not being configured as an application in IIS.

Source Error:

Line 17:     <compilation debug="false" strict="false" explicit="true" targetFramework="4.0" />
Line 18:
Line 19:     <authentication mode="Forms">
Line 20:       <forms loginUrl="~/Account/Login.aspx" timeout="2880" />
Line 21:     </authentication>

It is caused by a virtual directory not being configured as an application in IIS.

However, this error occurs primarily out of 2 scenarios.

1. When you create an new web application using visual studio.net, it automatically creates the virtual directory and configures it as an application. However, if you manually create the virtual directory and it is not configured as an application, then you will not be able to browse the application and may get the above error. The debug information you get as mentioned above, is applicable to this scenario.

To resolve it, Right Click on the virtual directory - select properties and then click on "Create" next to the "Application" Label and the textbox. It will automatically create the "application" using the virtual directory's name. Now the application can be accessed.

2. When you have sub-directories in your application, you can have web.config file for the sub-directory. However, there are certain properties which cannot be set in the web.config of the sub-directory such as authentication, session state (you may see that the error message shows the line number where the
authentication or sessionstate is declared in the web.config of the sub-directory). The reason is, these settings cannot be overridden at the sub-directory level  unless the sub-directory is also configured as an application (as mentioned in the above point).

Mostly we have the practice of adding web.config in the sub-directory if we want to protect access to the sub-directory files (say, the directory is admin and we wish to protect the admin pages from unathorized users).

But actually, this can be achieved in the web.config at the application's root level itself, by specifing the location path tags and authorization, as follows:-

<location path="Admin">
<system.web>
<authorization>
<allow roles="administrators" />
<deny users="*" />
</authorization>
</system.web>
</location>

However, if you wish to have a web.config at the sub-directory level and protect the sub-directory, you can just specify the Authorization mode as follows:-

<configuration>
<system.web>
<authorization>
<allow roles="administrators" />
<deny users="*" />
</authorization>
</system.web>
</configuration>

Thus you can protect the sub-directory from unauthorized access. Good luck…

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.

The most sensitive information stored in web.config file can be the connection string. You do not want to disclose the information related to your database to all the users where the application is deployed. Every time it is not possible to have a private machine for your sites, you may need to deploy the site in shared host environment. To encrypt the connection string in above situation is advisable.

ASP.NET 2.0 provides in built functionality to encrypt few sections of web.config file. The task can be completed using Aspnet_regiis.exe. Below is the web.config file and <connectionStrings> section.   

   1: <connectionStrings>
   2:   <add name="cn1"
   3:           connectionString="Server=DB SERVER;
   4:                             database=TestDatabase;
   5:                             uid=UID;
   6:                             pwd=PWD;" />
   7:  </connectionStrings>

To encrypt the connection string section follow the steps,

1. Go to Start -> Programm Files -> Microsoft Visual Studio 2005 -> Visual Tools -> Microsoft Visual Studio 2005 Command Prompt

2. Type following command,

aspnet_regiis.exe -pef “connectionStrings” C:\Projects\DemoApplication

-pef indicates that the application is built as File System website.  The second argument is the name of configuration section needs to be encrypted. Third argument is the physical path where the web.config file is located.

If you are using IIS base web site the command will be,

 aspnet_regiis.exe -pe “connectionStrings” -app “/DemoApplication”

 -pe indicates that the application is built as IIS based site. The second argument is the name of configuration section needs to be encrypted. Third argument “-app” indicates virtual directory and last argument is the name of virtual directory where application is deployed.   

If everything goes well you will receive a message “Encrypting configuration section…Succeeded!”

Open your web.config file and you can see that connection string is encrypted,

   1: <connectionStrings configProtectionProvider="RsaProtectedConfigurationProvider">
   2:   <EncryptedData Type=http://www.w3.org/2001/04/xmlenc#Element
   3:    xmlns="http://www.w3.org/2001/04/xmlenc#">
   4:    <EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#tripledes-cbc" />
   5:    <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
   6:     <EncryptedKey xmlns="http://www.w3.org/2001/04/xmlenc#">
   7:      <EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa
1_5" />
   8:      <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
   9:       <KeyName>Rsa Key</KeyName>
  10:      </KeyInfo>
  11:      <CipherData>
  12:       <CipherValue>Ik+l105qm6WIIQgS9LsnF8RRxQtj2ChEwq7DbHapb440GynFEoGF6Y3EM3Iw/lyDV8+P8bIsketi5Ofy9gpZlCBir7n315Q6RPbdclUo79o/LKadhX4jHFpnSIQNIF/LhwjwkLFC0=</CipherValue>
  13:      </CipherData>
  14:     </EncryptedKey>
  15:    </KeyInfo>
  16:    <CipherData>
  17:     <CipherValue>JsLrQ5S8Pq3U72nQzmSl/XlLX72GM0O3EbPLaHRNvjTDgG9seDflGMjTfO10M1s7/mPh//3MhA7pr0dNHUJ143Svhu5YXODRC6z9CkR0uyE4H7uDvTKJ8eR3m9APhXoo1sT1K3tCLHD6a2BM+gqSk9d8PzCfbM8Gmzmpjz1ElIaxu62b4cg9SNxp8o86O9N3fBl2mq</CipherValue>
  18:    </CipherData>
  19:   </EncryptedData>
  20:  </connectionStrings>

You do not have to write any code to decrypt this connection string in your application, dotnet automatically decrypts it. So if you write following code you can see plaintext connection string.

   1: Response.Write(ConfigurationManager.ConnectionStrings["cn1"].ConnectionString);

Now to decrypt the configuration section in web.config file use following command,

For File System Application,

aspnet_regiis.exe -pdf “connectionStrings” C:\Projects\DemoApplication

For IIS based Application

aspnet_regiis.exe -pd “connectionStrings” -app “/DemoApplication” 

If you want to encrypt any nested section in web.config file like <pages> element within <system.web> you need to write full section name as shown below,

aspnet_regiis.exe -pef “system.web/Pages” C:\Projects\DemoApplication

You can encrypt all the sections of web.config file except following using the method I displayed in this article,

<processModel>
<runtime>
<mscorlib>
<startup>
<system.runtime.remoting>
<configProtectedData>
<satelliteassemblies>
<cryptographySettings>
<cryptoNameMapping>
<cryptoClasses>

To encrypt these section you needed to use Aspnet_setreg.exe tool.  For more detail about Aspnet_setreg.exe tool search Microsoft Knowledge Base article 329290, How to use the ASP.NET utility to encrypt credentials and session state connection strings. 

Happy Programming !!!

Need ASP.NET 4 hosting? Please visit our site at http://www.asphostportal.com. Just with only $5.00/month to get ASP.NET 4 hosting. If you have any further questions, please feel free to email us at [email protected].

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.

If you are running your application in ASP.NET 2.0 and facing the error as shown below then this is a Tip for you->

The process account used to run ASP.NET must have read access to the IIS metabase (e.g. IIS://servername/W3SVC). For information on modifying metabase permissions, please see http://support.microsoft.com/?kbid=267904.

Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Do the below to solve the above problem:

Just go to your framwork folder most probably it will be "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\" , now this error is caused because you installed IIS after you installed ASP.NET 2.0 wo you need to register your IIS with asp.net 2.0 .

Go To command prompt and their go to C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\ and from their run "aspnet_regiis -i" this exe file will do the job for you , just restart your IIS and start your application.

If the problem still persist then reinstall the ASP.NET framework 2.0 again or just Repair it on Remove and install icon in control panel.

Good luck and hope it helps. If you need ASP.NET 4 hosting, please visit our site at http://www.asphostportal.com.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.

Microsoft has released developer previews for Visual Studio 2011 and .Net framework 4.5. There are lots of new features available in the developer preview. One of the most interested things for web developers is the support introduced for new HTML 5 form controls.

The following are the list of new controls available in HTML 5

·         email

·         url

·         number

·         range

·         Date pickers (date, month, week, time, datetime, datetime-local)

·         search

·         color

I have created a project in Visual Studio 2011 developer preview, and created a page named “controls.aspx”. In the page I placed on Text box control from the toolbox.



Now select the control and go to the properties pane, look at the TextMode attribute.



Now you can see more options are added here than prior versions of ASP.Net. I just selected Email as TextMode. I added one button to submit my page. The screen shot of the page in Visual Studio 2011 designer is as follows



See the corresponding markup

<form id="form1" runat="server">
    <div>
        Enter your email:
        <asp:TextBox ID="TextBox1" runat="server" TextMode="Email"></asp:TextBox
    </div>
    <asp:Button ID="Button1" runat="server" Text="Submit" />
</form>

Now let me run this page, IE 9 do not have the support for new form fields. I browsed the page using Firefox and the page appears as below.



From the source of the rendered page, I saw the below markup for my email textbox

<input name="TextBox1" type="email" id="TextBox1" />

Try to enter an invalid email and you will see the browser will ask you to enter a valid one by default.



When rendered in non-supported browsers, these fields are behaving just as normal text boxes. So make sure you are using validation controls with these fields.

See the browser support compatability matrix with these controls with various browser vendors.



ASP.Net 4.5 introduced the support for these new form controls. You can build interactive forms using the newly added controls, keeping in mind that you need to validate the data for non-supported browsers.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.