This article shows how to restrict the use of cut, copy and paste by the end user in the whole page.

In the real world, sometimes a developer needs to restrict a basic facility such as cut, copy and paste on an entire web page but not on a specific control. At that time you will need some easy way to stop these kinds of facilities on the page but not create code in every control to disable these facilities.
Suppose you have 20 "TextBox" controls in your page and you want to restrict the cut, copy and paste in all the textboxes, then you do not need to write the disable code in each TextBox. In this scenario, you need to just write the disable code only in the "body" tag.
To explain such implementation, I will use the following procedure.

Step 1

Create an ASP.Net Empty Website named "My Project".

Step 2

Add a new web form named "Default.aspx" into it.

Step 3

Add 2 "TextBox" controls to the page named "Default.aspx" .

Step 4

On Cut: By this, you can disable the "Cut " facility in both of the "TextBox" Controls.
Syntax: oncut= “return false”;

On Copy: By this, you can disable the "Copy " facility in both of the "TextBox" controls.
Syntax: oncopy= “return false”;

On Paste: By this, you can disable the "Cut" facility in both of the "TextBox" controls.
Syntax: onpaste= “return false”;

To disable the All (Cut, Copy and Paste) in the entire page:

Conclusion

In this article, I have described how to restrict the user to use the cut, copy and paste facilities in the entire page and I hope it will be beneficial for you.

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In ASP.NET MVC we can validate each input field by decorating the corresponding property in the model class with some validation attributes like Required, MaxLength, MinLength, etc.

Sometime we need to validate a property according to another property value for example if we have a registration form and we need the user enter his age if he is a male and age not required if the user sex is female. So if we decorated the Age property with Required attribute it will show error message even if the user is female, so we need to bypass this check with females.

Assume our registration form will contains three fields, name, sex and age, and its model will be as follows

public class RegisterationModel
{
    [Required(ErrorMessage = "*")]
    public String Name { get; set; }

    [Required(ErrorMessage = "*")]
    [Display(Name = "Gender")]
    public Sex Sex { get; set; }

    [RequiredIf("Sex", Sex.Male, "enter your age")]
    public Int32? Age { get; set; }
}
public enum Sex
{
    Female = 1,
    Male = 2
}

Note we decorated the Age property with RequiredIf attribute, that we will create and it inherits ValidationAttribute class and override IsValid method.

The RequiredIf attribute accepts three pramaters in its constructor, first parameter is the name of the property will affect the validation (Sex property), second parameter is the value of that property that make the Age is required(Male), and third parameter is the error message that will be displayed if the validation failed.

public class RequiredIfAttribute : ValidationAttribute
{
    private String PropertyName { get; set; }
    private String ErrorMessage { get; set; }
    private Object DesiredValue { get; set; }

    public RequiredIfAttribute(String propertyName, Object desiredvalue, String errormessage)
    {
        this.PropertyName = propertyName;
        this.DesiredValue = desiredvalue;
        this.ErrorMessage = errormessage;
    }

    protected override ValidationResult IsValid(object value, ValidationContext context)
    {
        Object instance = context.ObjectInstance;
        Type type = instance.GetType();
        Object proprtyvalue = type.GetProperty(PropertyName).GetValue(instance, null);
        if (proprtyvalue.ToString() == DesiredValue.ToString() && value == null)
        {
            return new ValidationResult(ErrorMessage);
        }
        return ValidationResult.Success;
    }
}

In the IsValid method we get the current instance of RegisterationModel class using ValidationContext object and get the value of the Sex property then compare it with the desire value(Male) which make the Age is required. If the current value of Sex property equal the desired value then IsValid will return new ValidationResult object with the supplied error message.

Unfortunately this technique is working in server side only.

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This article will explains about describes Attribute Based Routing in ASP.NET MVC 5. Today we will have a look at one of the new features introduced in ASP.NET MVC 5, attribute based routing.

Pre-Context

We all know that ASP.NET MVC is a great platform that allows us to create and manage web applications in a much simpler manner compared to form-based web applications. There are a few things in MVC based web applications that works a little differently than standard web applications, one of them is routing.
Until now, there has been a routing table that you can define either in the Global.asax or in the RouteConfig.cs and all incoming requests would look it up to decide the rendering of a target view.
Here is the code that you might have seen previously to have note-variable routes in MVC 4 in the following example of the Route collection object.  

                         routes.MapRoute(  
                name: "Default",  
                url: "{controller}/{action}/{id}",  
                defaults: new { controller = "Product", action = "List", id = UrlParameter.Optional }  
                ); 

The big question: what is the need for this new routing methodology?
And the answer is: there was nothing really wrong with the previous approach of routing and in fact you can still use it in MVC 5 or use this new routing method in conjunction with the old one.
Here are a few advantages of attribute based routing:  

• Helps developer in the debugging / troubleshooting mode by providing information about routes.
• Reduces the chances for errors, if a route is modified incorrectly in RouteConfig.cs then it may affect the entire application's routing.
• May decouple controller and action names from route entirely.
• Easy to map two routes pointing to the same action.

All right, enough of talking. Let's see exactly how we can configure it and see it working.
First, we will need to enable attribute based routing on our MVC web application that can be done by only one line. All you need to do is put this line in the RegisterRoutes Method of the application.

    public static void RegisterRoutes(RouteCollection routes)  
    {  
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");         
        tes.MapMvcAttributeRoutes(); //Enables Attribute Based Routing   
        routes.MapRoute(  
            name: "Default",  
            url: "{controller}/{action}/{id}",  
            defaults: new { controller = "Product", action = "List", id = UrlParameter.Optional }  
        );                    
    } 

Now, here is how you can use the attribute based routing on a specific action method.

[Route("products/{id?}")]  
          public ActionResult Details(string id)   
          {  
              if (string.IsNullOrEmpty(id))   
              {  
                  return View("List", GetProductList());  
              }                   
              return View("Details", GetProductDetails());  
          }  

As shown in the method above, the Route is defined on a Details action method that lets users access the product details page either by of these paths:  
    /Product/Details/Id or /products/id
You might have observed the question mark in the route above, all it indicates is that the id is an optional parameter of the route and hence the action method logic checks if the id is null. It will show you the product listing page.

Route Prefixes

Route Prefixes are nothing but the prefix for any route that we want to apply, all we need to do is to define the route prefix on a controller so that all the action methods inside it can follow the prefix.
For example:   

         [RoutePrefix("products")]  
          public class ProductController : Controller  
          {  
              //This will be translated to /products          
             [Route]  
              public ActionResult List()  
              {  
                  return View();  
              }          
              //This will be translated to /products/2          
              [Route("{id?}")]  
              public ActionResult Details(string id)   
              {  
                  if (string.IsNullOrEmpty(id))   
                  {  
                     return View("List");  
                  }                       
                  return View("Details");  
              }  
      }

Route Constraints

Route constraints are nothing but a set of rules that you can define on your routing model / parameters that users need to follow when accessing the defined routes.
The way to define a constraint is by using the ":" character, let's have a look at the example below.
For example:

   //route gets called as /products/productname  
        [Route("products/{id:alpha}")]  
            public ActionResult GetProduct(string name)  
            {  
                return View();  
            }         
    //route gets called as /products/2  
            [Route("products/{id:int}")]  
            public ActionResult GetProduct(int id)  
            {  
                return View();  
            } 

Now you might have observed in the example above that though the method name is the same the route's parameter has some constraint on it. In other words the first method will be called if the route is accessed with a string as parameter and the second method will be called if the route is accessed with an integer in the route parameter.
You can also define your custom route constraints using an IRouteConstraint interface.

Route Areas

A Route area is nothing but the way to specify the area in a route, basically just to let the route know that the controller belongs to some area.

[RouteArea("business")]  
      [RoutePrefix("products")]  
      public class ProductController : Controller  
      {  
          //This will be translated to /business/products/list      
          [Route]  
          public ActionResult List()  
          {  
              return View();  
          }  
  }

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Doughnut Chart In ASP.Net

Today i will explains about how to show data in doughnut chart. In this article we will learn about the Doughnut Chart of ASP.Net.
what's Donut or Doughnut chart?? Donut or Doughnut chart is just a simple pie chart with a hole inside. You can define hole radius to any size you need, both in percent or pixels. Sometimes we need to show data in a chart like a Doughnut chart, such as to show quarterly data and on, so by considering the preceding requirement and to introduce the ASP.Net Doughnut Chart controls I have decided to write this article.

Let us learn about the ASP.Net chart type Doughnut chart that provides a powerful UI and great design quality. We will learn about these chart type controls step-by-step. All the charts are in the System.Web.UI.DataVisualization.Charting namespace.
The chart data is represented using the following points:

• X Axis: the horizontal line of the chart termed the X axis
• Y Axis: the vertical line of the chart termed the Y axis

Now let us learn about the properties of the Doughnut chart. A Doughnut chart type has the following common properties:

• AlternetText: Sets the alternate text when the image is not available.
• Annotation: Stores the chart annotations.
• AntiAliasing: sets a value that determines whether anti-aliasing is used when text and graphics are drawn.
• BackGradientStyle: sets the orientation for the background gradient for the Chart control. Also determines whether a gradient is used, the default is None.
• Backcolor: sets the background color for a chart, the default color is White.
• BackImage: sets the background image for the chart control.
• BackHatchStyle: sets the hatching style for the chart control, the default is None.
• Height: Sets the height for the chart control.
• Width: Sets the width for the chart control.
• Palette: Sets the style with the color for the chart control, the default style is Chocolate.
• PaletteCustomColors: Sets the custom color for the chart control.
• Series: Sets the series collection for the chart control.
• Legends: Sets the series of legends to the chart.

Now let us show the preceding explanation with a practical example by creating a simple web application.

Step 1: Create the table for the chart data

• Now before creating the application, let us create a table named QuarterwiseSale in a database from where we show the records in the chart using the following script:

CREATE TABLE [dbo].[QuarterwiseSale](    
    [id] [int] IDENTITY(1,1) NOT NULL,    
    [Quarter] [varchar](50) NULL,    
    [SalesValue] [money] NULL,    
 CONSTRAINT [PK_QuarterwiseSale] PRIMARY KEY CLUSTERED     
    (    
    [id] ASC    
    )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF,IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]    
    ) ON [PRIMARY]   

• The table has the following fields (shown in the following image): 
• Now insert some records using the following script: 
  

SET IDENTITY_INSERT [dbo].[QuarterwiseSale] ON          
    GO    
    INSERT [dbo].[QuarterwiseSale] ([id], [Quarter], [SalesValue]) VALUES     (1, N'Q1', 100.0000)    
    GO    
    INSERT [dbo].[QuarterwiseSale] ([id], [Quarter], [SalesValue]) VALUES     (2, N'Q2', 50.0000)    
    GO    
    INSERT [dbo].[QuarterwiseSale] ([id], [Quarter], [SalesValue]) VALUES     (3, N'Q3', 150.0000)    
    GO    
    INSERT [dbo].[QuarterwiseSale] ([id], [Quarter], [SalesValue]) VALUES     (4, N'Q4', 200.0000)    
    GO    
    SET IDENTITY_INSERT [dbo].[QuarterwiseSale] OFF    
    GO   

Now the records will look as in the following image:
Now create the Stored Procedure to fetch the records from the database as in the following:

Create Procedure [dbo].[GetSaleData]    
    (    
    @id int=null             
    )    
    as    
    begin    
    Select Quarter,SalesValue from QuarterwiseSale    
    End   

I hope you have the same type of table and records as above.

Step: 2 Create Web Application

• Now create the project using the following:
• "Start" - "All Programs" - "Microsoft Visual Studio 2013".
• "File" - "New Project" - "C#" - "Empty Project" (to avoid adding a master page).
• Provide the project a name such as UsingDoughnutChart or another as you wish and specify the location.
• Then right-click on Solution Explorer and select "Add New Item" then select Default.aspx page.
• Drag and Drop a Chart control from the ToolBox onto the Default.aspx page.
• Now the Default.aspx source code will be as follows:

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>         
    <%@ Register Assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"  
        Namespace="System.Web.UI.DataVisualization.Charting" TagPrefix="asp" %>  
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
    <html xmlns="http://www.w3.org/1999/xhtml">  
    <head runat="server">  
        <title>Article by Vithal Wadje</title>  
    </head>  
    <body bgcolor="silver">  
        <form id="form1" runat="server">  
        <h4 style="color: Navy;">  
            Article for C#Corner  
        </h4>  
        <asp:Chart ID="Chart1" runat="server" BackColor="0, 0, 64" BackGradientStyle="LeftRight"  
            BorderlineWidth="0" Height="360px" Palette="None" PaletteCustomColors="Maroon"  
            Width="380px" BorderlineColor="64, 0, 64">  
            <Titles>  
                <asp:Title ShadowOffset="10" Name="Items" />  
            </Titles>  
            <Legends>  
                <asp:Legend Alignment="Center" Docking="Bottom" IsTextAutoFit="False" Name="Default"  
                    LegendStyle="Row" />  
            </Legends>  
            <Series>  
                <asp:Series Name="Default" />  
            </Series>  
            <ChartAreas>  
                <asp:ChartArea Name="ChartArea1" BorderWidth="0" />  
            </ChartAreas>  
        </asp:Chart>  
        </form>  
    </body>  
    </html> 

• Create a method to bind the chart control. Then open the default.aspx.cs page and create the following function named Bindchart to bind the Chart Control as in the following:
  

private void Bindchart()  
        {  
            connection();  
            com = new SqlCommand("GetSaleData", con);  
            com.CommandType = CommandType.StoredProcedure;  
            SqlDataAdapter da = new SqlDataAdapter(com);  
            DataSet ds = new DataSet();  
            da.Fill(ds);         
            DataTable ChartData = ds.Tables[0];  
            //storing total rows count to loop on each Record  
            string[] XPointMember = new string[ChartData.Rows.Count];  
            int[] YPointMember = new int[ChartData.Rows.Count];         
            for (int count = 0; count < ChartData.Rows.Count; count++)  
            {  
                //storing Values for X axis  
                XPointMember[count] = ChartData.Rows[count]["Quarter"].ToString();  
                //storing values for Y Axis  
                YPointMember[count] = Convert.ToInt32(ChartData.Rows[count]["SalesValue"]);  
            }  
            //binding chart control  
            Chart1.Series[0].Points.DataBindXY(XPointMember, YPointMember);         
            //Setting width of line  
            Chart1.Series[0].BorderWidth = 10;  
            //setting Chart type   
            Chart1.Series[0].ChartType = SeriesChartType.Doughnut;       
            foreach (Series charts in Chart1.Series)  
            {  
                foreach (DataPoint point in charts.Points)  
                {  
                    switch (point.AxisLabel)  
                    {  
                        case "Q1": point.Color = Color.YellowGreen; break 
                        case "Q2": point.Color = Color.Yellow; break;  
                        case "Q3": point.Color = Color.SpringGreen; break;
                    }  
                    point.Label = string.Format("{0:0} - {1}", point.YValues[0], point.AxisLabel);         
                }  
            }           
            //Enabled 3D  
          //  Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = true;
            con.Close();         
        } 

Note that we have written a small code snippet to provide the different color for each point as in the following:

//To give different color for each point             
    foreach (Series charts in Chart1.Series)      
           {      
               foreach (DataPoint point in charts.Points)      
               {      
                   switch (point.AxisLabel)      
                   {      
                       case "Q1": point.Color = Color.RoyalBlue; break;   
                       case "Q2": point.Color = Color.SaddleBrown; break; 
                       case "Q3": point.Color = Color.SpringGreen; break; 
                   }      
                   point.Label = string.Format("{0:0} - {1}", point.YValues[0], point.AxisLabel);                
               }      
           }       

• Now, call the preceding function on page load as in the following:

protected void Page_Load(object sender, EventArgs e)      
        {      
            if (!IsPostBack)      
            {      
                Bindchart();                 
            }      
        }    

• The entire code of the default.aspx.cs page will look as follows:
  

      using System;  
    using System.Collections.Generic;  
    using System.Linq;  
    using System.Web;  
    using System.Web.UI;  
    using System.Web.UI.WebControls;  
    using System.Data.SqlClient;  
    using System.Configuration;  
    using System.Data;  
    using System.Web.UI.DataVisualization.Charting;  
    using System.Drawing;         
    public partial class _Default : System.Web.UI.Page  
    {  
        private SqlConnection con;  
        private SqlCommand com;  
        private string constr, query;  
        private void connection()  
        {  
            constr = ConfigurationManager.ConnectionStrings["getconn"].ToString();  
            con = new SqlConnection(constr);  
            con.Open();  
               }  
        protected void Page_Load(object sender, EventArgs e)  
        {  
            if (!IsPostBack)  
            {  
                Bindchart();    
            }  
        }     
        private void Bindchart()  
        {  
            connection();  
            com = new SqlCommand("GetSaleData", con);  
            com.CommandType = CommandType.StoredProcedure;  
            SqlDataAdapter da = new SqlDataAdapter(com);  
            DataSet ds = new DataSet();  
            da.Fill(ds);         
            DataTable ChartData = ds.Tables[0];         
            //storing total rows count to loop on each Record  
            string[] XPointMember = new string[ChartData.Rows.Count];  
            int[] YPointMember = new int[ChartData.Rows.Count];         
            for (int count = 0; count < ChartData.Rows.Count; count++)  
            {  
                //storing Values for X axis  
                XPointMember[count] = ChartData.Rows[count]["Quarter"].ToString();  
                //storing values for Y Axis  
                YPointMember[count] = Convert.ToInt32(ChartData.Rows[count]["SalesValue"]);         
            }  
            //binding chart control  
            Chart1.Series[0].Points.DataBindXY(XPointMember, YPointMember);         
            //Setting width of line  
            Chart1.Series[0].BorderWidth = 10;  
            //setting Chart type   
            Chart1.Series[0].ChartType = SeriesChartType.Doughnut;      
            foreach (Series charts in Chart1.Series)  
            {  
                foreach (DataPoint point in charts.Points)  
                {  
                    switch (point.AxisLabel)  
                    {  
                        case "Q1": point.Color = Color.YellowGreen; break 
                        case "Q2": point.Color = Color.Yellow; break;  
                        case "Q3": point.Color = Color.SpringGreen; break;
                    }  
                    point.Label = string.Format("{0:0} - {1}", point.YValues[0], point.AxisLabel);  
                }  
            }    
            //Enabled 3D  
          //  Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = true;  
            con.Close();  
        }  
    } 

We now have the entire logic to bind the chart from the database, let us run the application. The chart will look as follows:

I hope this article work for you.

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I'm working on a new personal project during my free time and I chose to develop it with ASP.NET MVC 6 (hosted on ASPHostPortal of course...) to test the new features of this version. In this project, I need to display "Logged in as xxxx " (if the user is logged...) in the header of the page. This is a simple scenario to implement but caching could complicate the development of my web app...

My header is in my layout and is used everywhere but I would like to place an OutputCacheAttribute on some actions (the home page, etc.). If I put the attribute on an action, all of my users will see an header with "logged in as xxxx" of the first incoming query!

The solution to this problem is named "Donut Caching": you send a cached page from the server with a "fresh" portion which is not in cache (the donut's hole).
Concretely, the server does not generate the requested page (query the DB, etc.): it just needs to take the cached version and replace a specific part.

Luckily, you do not need to develop your own custom OutputCacheAttribute because there is already a very good package (There's An App A Pack For That... thanks NuGet!): MvcDonutCaching for ASP.NET MVC 3 and later...

To install the package, you can search through NuGet or directly type the following command in the "Package Manager Console":

install-package MvcDonutCaching

The use of this package is very simple... They have created several extension methods for HtmlHelper with the usual parameters plus another boolean parameter: excludeFromParentCache. I just have to call my partial view (with the "connected has xxxx"...) like that:

@Html.Action("LoginHeader", "Account", new { lang }, true)\

The last parameter of Html.Action is set to true: this partial view will be excluded from the parent cache (if there is a cache on the action...). (do not pay attention to new { lang }, it's a route's value) To make it work, you must not use the OutputCacheAttribute but the DonutOutputCacheAttribute:

[DonutOutputCache(Duration = 60, VaryByParam = "lang")]
     public ActionResult Index(string lang)
     {
         ...
     
         return View();
     }

And that's it! The first request will be cached during 60 seconds but the LoginHeader partial view will be generated every time.

(note: of course, the donut caching only works on the server side...)

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Umbraco is easy to learn and use, making it perfect for web designers, developers and content creators alike. Umbraco is strongly supported by both an active and welcoming community of users around the world, and backed up by a rock-solid commercial organization providing professional support and tools. Umbraco can be used in its free, open-source format with the additional option of professional tools and support if required.

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How to Delete Record in GridView Using ASP.Net Ajax and jQuery

This article will explains how to delete record in GridView using ASP.NET Ajax and jQuery

• Now first create the Employee table in the database.

CREATE TABLE tbl_Emp(Empid int NULL,EmpName varchar(250) NULL, Gender varchar(20), EmpAddress varchar(500) NULL,City varchar(250) NULL,Salary int NULL, Fk_DepId int)

• And insert some records into the table:
  

INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(1, 'A' , 'Male', 'Demo Address', 'Agra', 4000, 3)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(2, 'B' , 'Male', 'Demo Address', 'Ghaziabad', 0, 2)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(3, 'C' , 'Male', 'Demo Address', 'Agra', 1000, 2)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(4, 'D' , 'Female', 'Demo Address', 'Mathura', 1000, 2)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(5, 'E' , 'Female', 'Demo Address', 'Agra', 4000, 3)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(6, 'F' , 'Male', 'Demo Address', 'Agra', 5000, 2)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(7, 'G' , 'Male', 'Demo Address', 'Noida', 4000, 1)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(8, 'H' , 'Male', 'Demo Address', 'Agra', 4000, 5)  
INSERT INTO tbl_Emp(Empid, EmpName, Gender, EmpAddress, City, Salary, Fk_DepId)VALUES(9, 'I' , 'Male', 'Demo Address', 'Noida', 5000, 1) 

• After creating the table create the application. New -> Web Site.
  
• Provide the name “DeleteRecordfromGridViewUsingJQueryAjax”.
• Then create a new item.

Your aspx page looks likes this:

<html xmlns="http://www.w3.org/1999/xhtml"> 
    <head runat="server"> 
        <title></title> 
    </head> 
    <body> 
        <form id="form1" runat="server"> 
            <div> 
                <asp:GridView ID="gvEmp" AutoGenerateColumns="false"CellPadding="4" runat="server"> 
                    <Columns> 
                    <asp:BoundField HeaderText="EmpId" DataField="EmpId"/>
                    <asp:BoundField HeaderText="EmpName"DataField="EmpName" />

                    <asp:BoundField HeaderText="Gender" DataField="Gender" /> 
            <asp:BoundField HeaderText="EmpAddress" DataField="EmpAddress" /> 
            <asp:TemplateField> 
            <ItemTemplate> 
            <asp:HiddenField ID="hdnEmpId" runat="server" Value='<%#Eval("EmpId") %>'></asp:HiddenField>                                  <asp:LinkButton ID="btnDelete" Text="Delete Emp" runat="server"OnClientClick="DeleteConfirmbox(this.id);"></asp:LinkButton>
                         </ItemTemplate> 
                        </asp:TemplateField> 
                    </Columns> 
          <HeaderStyle BackColor="#5d5d5d" FontBold="true"ForeColor="White" />
                </asp:GridView> 
            </div> 
        </form>
         <script src="Scripts/jquery-1.7.1.min.js"></script>        
        <script type="text/javascript"> 
            function DeleteConfirmbox(val) { 
                // confirm meg check for delete 
                var result = confirm('Are you sure delete Emp Record?'); 
                if (result) {        
                  // this is for get hdnvalue id 
                  var value = val.replace("btnDelete", "hdnEmpId"); 
                  $.ajax({ 
                  type: "POST", 
                  contentType: "application/json; charset=utf-8", 
                  url: "Default.aspx/DeletegvEmpData",//this for calling the web method function in cscode. 
                  data: '{empid: "' + $("#" + value).val() + '" }',// empid value                     
                  dataType: "json", 
                  success: OnSuccess, 
                  failure: function (data) { 
                  alert(data); 
                        }          
                    });                        
                    return false; 
                } 
            }        
            // function OnSuccess 
            function OnSuccess(response) { 
                return false; 
            if (response.d == 'true') 
            {              
            }      
        } 
    </script> 
</body> 
</html> 

• Now add “using System.Data.SqlClient;” and “using System.Data;” in the code behind and write the following code to delete the record in the grid view in the database.
  

protected void Page_Load(object sender, EventArgs e)  
  {  
      if (!IsPostBack)  
      {  
          Bindgv();  
      }  
  }       
  protected void Bindgv()  
  {  
      SqlConnection con = new SqlConnection("data source=LENOVO;initial catalog=practise;UID=sa;PWD=connect;");       
      con.Open();  
      SqlCommand cmd = new SqlCommand("Select Top 10 EmpId, EmpName, Gender, EmpAddress from tbl_Emp", con);  
      SqlDataAdapter da = new SqlDataAdapter(cmd);  
      DataSet ds = new DataSet();  
      da.Fill(ds);  
      con.Close();  
      gvEmp.DataSource = ds;  
      gvEmp.DataBind();       
  }       
  [System.Web.Services.WebMethod]  
  public static string DeletegvEmpData(int empid)  
  {  
      string strmsg = string.Empty;  
      SqlConnection con = new SqlConnection("data source=LENOVO;initial catalog=practise;UID=sa;PWD=connect;");       
      SqlCommand cmd = new SqlCommand("delete from tbl_Emp where EmpId= @Empid", con);       
      con.Open();  
      cmd.Parameters.AddWithValue("@Empid", empid);  
      int retval = cmd.ExecuteNonQuery();  
      con.Close();       
      if (retval == 1)  
          strmsg = "true";  
      else  
          strmsg = "false";                   
      return strmsg;  
  }
Add the jQuery library reference in aspx page:
    <script src="Scripts/jquery-1.7.1.min.js"></script> 

Finished, Now you can run this page.

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Diagnostic And Performance Monitoring in .Net

In this article we will have a look at what is newer in .Net to help determine the problem area or scope for improvements in your program.
There are a number of tools and utilities available to monitor and tune your .Net application's performance. The .Net framework itself provides a very good infrastructure for performance monitoring and analysis.
Allows the user to monitor application domain level Memory and Processor usage statistics. Previous to .Net we had limited APIs available, which can provide support for reading only the Process level memory usage and CPU usage information. In .net you have access to Processor and Memory usage estimates for a given application domain.

The application domain based resource monitoring feature is available in:

• Hosting APIs and
• Event Tracing for Windows(ETW).

By default, application domain level resource monitoring is disabled. This feature has to be enabled in a process to get application domain level resouce consumption details within that process.
The AppDomain class has been enhanced to provide support for this new feature. A process can enable this feature using the AppDomain class's static property MonitoringIsEnabled.

(bool) AppDomain.MonitoringIsEnabled

It is a boolean property. Once this property is enabled in the process, it stays active until the process exits. You can assign only the value 'true'; even though it is a boolean property, assigning the value 'false' to this property causes an Invalid Argument exception.
The AppDomain class provides the following properties to access the Appdomain's resource usage.

AppDomain.MonitoringSurvivedMemorySize

It is a readonly instance property. Provides the number of bytes which is currently allocated by the Appdomain in the managed heap. In other words this property provides the size of memory which is survived the last cycle of garbage collection. This property is updated only after a full, blocking collection occurred.

AppDomain.MonitoringSurvivedProcessMemorySize

It is a readonly static property, provides the number of bytes currently allocated by the current process in the managed heap memory. This an equivalent of GC.GetTotalMemory property.

AppDomain.MonitoringTotalAllocatedMemorySize

This is a readonly instance property. It returns the total size, in bytes, of all memory allocations that have been made by the application domain since it was created, without subtracting memory that has been collected.

AppDomain.MonitoringTotalProcessorTime

It is a readonly instance property. Returns the total processor time utilized by the application domain since the process started. The total time reported by this property includes the time each thread in the process spent executing in that application domain.
The excution time of unmanaged calls made by an application domain, is also counted for that application domain.
The sleeping time of a thread is not counted in association with the application domain's processor usage.

Using Event Tracing for Windows (ETW)

You can now access the ETW events for diagnostic purposes to improve performance.