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ImageButton.CommandName Property

Gets or sets the command name associated with the ImageButton control.

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

[ThemeableAttribute(false)]
public string CommandName { get; set; }
<asp:ImageButton CommandName="String" />

Property Value

Type: System.String
The command name associated with the ImageButton control. The default value is String.Empty.

Implements

IButtonControl.CommandName

Use this property to specify the command to perform when the ImageButton control is clicked, such as Sort, Cancel, or Edit. This allows multiple ImageButton controls to be placed on the same Web page. The value in this property can then be programmatically identified in the OnCommand event handler to determine the appropriate action to perform when each ImageButton control is clicked.

Supplemental information about the command, such as specifying ascending sort order, can be included by using the CommandArgument property.

This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins.

The following example demonstrates how to use the CommandName property to associate a command name with an ImageButton control.

NoteNote

The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.

<%@ Page Language="C#" AutoEventWireup="True" %>
<!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>
    <title>ImageButton CommandName Sample</title>
<script language="C#" runat="server">

      void ImageButton_Command(object sender, CommandEventArgs e) 
      {
         if (e.CommandName == "Sort")
            Label1.Text = "You clicked the Sort Button";
         else
            Label1.Text = "You clicked the Edit Button";
      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>ImageButton CommandName Sample</h3>

      Click an image.<br /><br />

      <asp:ImageButton id="imagebutton1" runat="server"
           AlternateText="Sort"
           ImageUrl="images/pict1.jpg"
           OnCommand="ImageButton_Command"
           CommandName="Sort"/>

      <asp:ImageButton id="imagebutton2" runat="server"
           AlternateText="Edit"
           ImageUrl="images/pict2.jpg"
           OnCommand="ImageButton_Command"
           CommandName="Edit"/>

      <br /><br />

      <asp:label id="Label1" runat="server"/>

   </form>

</body>
</html>

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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