Error Message:

404 Not Found error messages are often customized by each website, especially very large ones, so keep in mind that this error may present itself in more ways than the common ones listed below

- "404 Error"
-"Page cannot be displayed"
-"Internet Explorer cannot display the webpage"
-"404: Not Found"
-"The page cannot be found"
-"Error 404: NOT FOUND"
-"HTTP 404 - File not found"
-"Not Found"

The 404 Not Found error displays inside the Internet browser window, just as web pages do.

Solution

1. Retry the web page by clicking the refresh/reload button or trying the URL from the address bar again. The 404 Not Found error has been known to appear on occasion even if there is no real issue so a simple refresh will often load the page you were looking for.

2. Check for errors in the URL. Often times the 404 Not Found error appears because the URL was typed wrong or the link that was clicked on points to the wrong URL.

3. Move up one directory level at a time in the URL until you find something. For example, if www.w.com/a/b/c.htm gave you the 404 Not Found error, move up to www.w.com/a/b/. If you get nothing here, move up to www.w.com/a/. This should lead you toward what you're looking for or at least confirm that it's no longer available.

4. If you move all the way up to the website's main page, try to run a search for the information you're looking for. If a search function isn't available, try finding your information by using links from this page to dig deeper into the site.

5. Test the page at downforeveryoneorjustme.com. Just enter the webpage in this online tool and it will tell you just that - if the site is down for everyone, or if the problem is on your end somewhere.

Another post about 403 Forbidden Error Resolution

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.

ASP.NET is a great platform to develop any web applications. From ASP.NET 1.1 we are having one feature called View State which store the data in hidden field during page post back. Any Serializable data can be stored in View State. It’s scope is limited to page post backs.View state is great if you use it wisely otherwise it may create problem with performance page. I have seen that there were some page which contains lots of view state. It will increase your Kilo bytes of page and increase page rendering time.

In ASP.NET 4.0 we have more control over maintaining view state for page let’s see how we can manage View State more efficiently in asp.net 4.0. In the earlier version of asp.net we have View State optional that means we can turn View State view EnableViewState property. If we made it true then it will enabled other wise it will be disabled for that page. All controls that are derived from control class will have EnableViewstate property. Now in earlier version of ASP.NET this property will be ignored for the child controls. For example if you enabled this property for page and now you have three textboxes on page then that textbox’s value will be stored in View State regardless of textbox’s EnableViewState Property is true or not.

But with ASP.NET 4.0 things are different with respect to above scenario. Now we have one more property called ViewStateMode Property. This property help us greatly in managing View State. It has there values Enabled,Disabled,Inherit. With this property you can enable View State of control even if View State is disabled. So now we will have facility to turn off the View State of parent controls like page and then we can decide which control will have View State enabled.

In ASP.NET 4.0 ViewStateMode property will accept following values.

- Enabled - This will enable View State for particular control and also for any child control which have ‘Inherit’ value for this property or nothing set for this property.

- Disabled- This will disable View State for that particular control.

- Inherit- This will specify that control will use the parent control ViewStateMode property.

Hope this will help you understanding View State Management in ASP.NET 4.0.

Output Caching Today

ASP.NET 1.0 introduced the concept of output caching, which enables developers to capture and store the generated output of pages, controls, controllers, and HTTP responses in an in-memory cache.  On subsequent web requests, ASP.NET can then serve content faster by retrieving and using the generated output from the cache instead of having to execute the page/controller to regenerate the output from scratch.  This can dramatically improve the performance of your application – especially in cases where your content is based on data within a database (since when the content is output cached you end up not having to hit the database on subsequent requests).

ASP.NET’s output caching system is flexible enough to enable you to cache different versions of content depending on the querystring/form-post parameters to a page/controller (for example: Browse.aspx?category=Beverages versus. Browse.aspx?category=Meat).  It also enables you to cache different versions based on the browser type or user-language preference of the client visiting your application. This allows you to cache a mobile version of a page separate from a version optimized for a desktop browser, as well as to vary the cache entries based on whether the user wants to read a page in English or French.  You can configure ASP.NET to cache a particular output cache entry for a specific period of time (for example: 1 minute – after which the next request will regenerate the content and cache it again).  You can also configure ASP.NET to dynamically invalidate a cache entry based on an external event (for example: if the database upon which the cached content depends changes). 

One limitation of output caching with ASP.NET V1->V3.5, though, is that the cache store itself is not extensible – and the cached content always has to be stored in-memory.

ASP.NET 4 Output Cache Extensibility

ASP.NET 4 adds an extensibility point to output caching that now enables developers to configure one or more custom output-cache providers. Output-cache providers can use any storage mechanism to persist output cached content. This makes it possible to easily create output-cache providers that store the cached content using any persistence mechanism – including local or remote disks, databases, cloud storage, and distributed cache engines (like memcached or velocity).

You can create a custom output-cache provider by creating a class that derives from the new System.Web.Caching.OutputCacheProvider class in ASP.NET 4.  Within your derived class you then override 4 public methods that provide implementations for adding/removing/retrieving/updating cached content (a unique key is passed to identify each separate cached entry).  You can then configure ASP.NET 4 to use your custom outputcache provider by registering it using the new <providers> subsection of the <outputCache> element within an application’s web.config file:



Above I’ve added a new output cache provider (which I’ve named “SampleCache”) that is implemented using the “ScottOutputCache” class within my OutputCacheSample.dll assembly.  I’ve also configured ASP.NET to use my “SampleCache” implementation as the default output cache implementation whenever content is output cached – this is done by setting the “defaultProvider” attribute on the <outputCache> element. 

And now, when I add an OutputCache directive to the top of any of .aspx page the content will be cached and stored using my ScottOutputCache provider:

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

Likewise, if I add an [OutputCache] attribute on any action method within an ASP.NET MVC Controller the content will also be cached and stored using my ScottOutputCache provider:

Customizing Which Output Cache Provider is Used

Above I configured ASP.NET to by default always cache content using my “SampleCache” provider whenever output caching is used within the application.

As a slightly more advanced option, developers can also configure ASP.NET to dynamically choose which output cache provider to use on a per-request basis.  This is useful for scenarios where you want to have a slightly richer set of cache semantics. For example, you might want to cache the “Home” page or "Top 10" requested pages of a site using the built-in ASP.NET in-memory provider (which will be super fast because the content will be in-memory), and then cache less frequently requested pages that get lower traffic on disk.

You can dynamically indicate which output cache provider to use on a per-request basis by overriding the GetOutputCacheProviderName() method within the Global.asax file of an application.  Below I’m indicating that for the “Home.aspx” page within my application I want to use the built-in in-memory ASP.NET output cache provider – and that I then want to use whatever is registered within the web.config file for every other request:



This ability to easily switch between providers depending on scenarios ends up enabling a bunch of really powerful scenarios.

Common Output Cache Providers

We’ll be shipping samples that demonstrate how to implement a disk-based output cache provider that stores cached content on the file-system.  We’ll also be shipping samples that demonstrate how to integrate output caching with the new Windows Server AppFabric Caching Service (formerly known as “Velocity”).  AppFabric’s caching service will be a free, fully supported, Microsoft distributed cache system.  It will also be easy to use the new ASP.NET 4 output caching extensibility with memcached – a popular open source distributed caching system.

You can learn more about how to create providers by watching Stefan Schackow’s ASP.NET 4 Core Runtime talk at PDC 2009.  You can also learn more about AppFabric’s Caching service from this PDC 2009 talk.

Summary

The addition of output-cache provider extensibility to ASP.NET 4 enables developers to easily pursue more aggressive and more intelligent output-caching strategies for web sites and applications.  These can significantly improve the performance and responsiveness of applications, and improve both end-user experiences as well as reduce the amount of server resources required. 

Hope this helps.

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.

We can deploy ASP.NET Application in  3 different ways

1. xCopy Deployment
2. Precompiled Deployment
3. Web Setup Project

The choice of best deployment alternative depends upon particular need of each application. Xcopy deployment is the most easiest, and it is often used during development to create copies of an application n different servers for testing purpose. For small application xcopy deployment may be the best choice.

Precompiled deployment has several advantages over XCopy deployment. Eg. Precompiled deployment is always gives better performance for the first users of the site at the same time it is more secure as we don’t need to copy our source code files on to server. If our application deployed on one or few servers then precompiled deployment is usually best choice.

When we are going to deploy our application on number of servers then creating a setup program is a very handy tool. Although creating this setup program is much tedious and involves considerable working, the deployment from this setup program becomes very easier.

xCopy Deployment

To manually copy the files of an asp.net web site to a server. We can use the xcopy command from a command prompt. Then we can use IIS’s (Internet Information Serve management console t o create a virtual directory that’s mapped to the directory that you copied the web site to.

It is easier to create a batch file for the xcopy command. Then after we can run that batch file at given time we make changes to the application and want to deploy the updated code.

We can also perform xcopy deployment from visual studio by using copy website command. 

To perform xcopy we use copy web site command. This command lets us to copy website to file system, local IIS, FTP or remote IIS website. At the same time we can copy all or selected files.

How to use this command

1. Deploys precompiled assemblies to the specific server
2. Lets us to deploy the web site without source code files
3. It is done either from publish web site command or from command prompt using the aspnet_compiler command

Advantages

1. Avoids delays caused by compiling web pages when they are first accessed by a user.
2. Finds compile errors before the site is deployed.
3. Can copy just executable files and not the source files to the server.

The build -> publish web site command compiles all of the files makes up an asp.net application, and then deploys the compiled assemblies to the location we specify.



If we check allow precompiled site to be updatable box, the source files are deployed along with the executable files. If we uncheck then source code files aren’t deployed.

The syntax of aspnet_compiler command
The aspnet_compiler command is located in the asp.net framework directory,
c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727

aspnet_compiler –v virtual-directory [-u] [-d] [-f] [target-directory]

where

* -v name of virtual directory of existing web site
* -u precompiled website will be updated
* -d debug information is included in compiled assemblies
* -f overwrite target directory if exist

Eg.
Precomplies existing website
Aspnet_compiler –v test d:\test

In same place
Aspnet_complier –v test

With debugging information
Aspnet_compiler –v test –u –d d:\test

If we specify target directory the precompiled web site is stored in the specified directory else the website is precompiled in place

Setup Deployment

1. It uses a web setup project to build a windows setup program used to deploy website onto server.

2. Useful for deployment on multiple servers.
3. Can be used to deploy precompiled assemblies and can be configured to include or omit the source code.
4. The installed application can be removed by using add or remove programs dialog box from control panel

How to create a setup

Choose the file -> add -> new project command to display the add new project dialog box. Then, choose setup and deployment. Select web setup project as template, enter a name for websetup project click ok.



In the solution explorer right click the web setup project and choose the add-> project output command to display the add project output group dialog box, then click ok to add the content files from you website to the web setup project

Use the buttons that are displayed at the top of the solution explorer when web setup project is selected to access setup editors that lets us to customize various aspects of the web setup project.



Visual studio creates files named setup.exe and setup.msi. setup.exe is the file we will run to install the application and setup.msi contains all of the files to be installed.

The setup.exe and setup.msi files are stored in the web setup project’s debug or release folder.

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.