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CommandField.ShowDeleteButton Property

Gets or sets a value indicating whether a Delete button is displayed in a CommandField field.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public virtual bool ShowDeleteButton { get; set; }

Property Value

Type: System.Boolean
true to display a Delete button in a CommandField; otherwise, false. The default is false.

Use the ShowDeleteButton property to specify whether a Delete button is displayed in a CommandField field for each record in the data-source control. The Delete button allows you to remove a record from the data source.

NoteNote:

When a data-bound control is used in combination with a data source control (such as a SqlDataSource control), the data-bound control can take advantage of the data source control's capabilities and provide automatic delete functionality. For other data sources, you must provide the routines to perform the delete operation during the appropriate event for the data-bound control.

When the ButtonType property of a CommandField field is set to ButtonType.Button or ButtonType.Link, use the DeleteText property to specify the text to display for a Delete button. Alternatively, you can display an image by first setting the ButtonType property to ButtonType.Image and then setting the DeleteImageUrl property.

The following code example demonstrates how to use the ShowDeleteButton property to display a Delete button for each record in a GridView control.

<%@ Page language="C#" %>

<!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>CommandField Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>CommandField Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="false"
        datakeynames="CustomerID"  
        runat="server">

        <columns>
          <asp:commandfield showdeletebutton="true"
            headertext="Edit Controls"/>
          <asp:boundfield datafield="CustomerID"
            headertext="Customer ID" />
          <asp:boundfield datafield="CompanyName"
            headertext="Company Name"/>
          <asp:boundfield datafield="Address"
            headertext="Address"/>
          <asp:boundfield datafield="City"
            headertext="City"/>
          <asp:boundfield datafield="PostalCode"
            headertext="ZIP Code"/>
          <asp:boundfield datafield="Country"
            headertext="Country"/>
        </columns>

      </asp:gridview>

      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        deletecommand="Delete [Customers] Where [CustomerID] = @CustomerID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>

    </form>
  </body>
</html>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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