ImageButton.CommandArgument Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets or sets an optional argument that provides additional information about the CommandName property.
public:
property System::String ^ CommandArgument { System::String ^ get(); void set(System::String ^ value); };
[System.ComponentModel.Bindable(true)]
public string CommandArgument { get; set; }
[System.ComponentModel.Bindable(true)]
[System.Web.UI.Themeable(false)]
public string CommandArgument { get; set; }
[<System.ComponentModel.Bindable(true)>]
member this.CommandArgument : string with get, set
[<System.ComponentModel.Bindable(true)>]
[<System.Web.UI.Themeable(false)>]
member this.CommandArgument : string with get, set
Public Property CommandArgument As String
Property Value
An optional argument that supplements the CommandName property.
Implements
- Attributes
Examples
The following example demonstrates how to use the CommandArgument property to associate a command argument with an ImageButton control.
Note
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" && e.CommandArgument == "Ascending")
Label1.Text = "You clicked the Sort Ascending Button";
else
Label1.Text = "You clicked the Sort Descending 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 Ascending"
ImageUrl="images/pict.jpg"
OnCommand="ImageButton_Command"
CommandName="Sort"
CommandArgument="Ascending"/>
<asp:ImageButton id="imagebutton2" runat="server"
AlternateText="Sort Descending"
ImageUrl="image/pict2.jpg"
OnCommand="ImageButton_Command"
CommandName="Sort"
CommandArgument="Descending"/>
<br /><br />
<asp:label id="Label1" runat="server"/>
</form>
</body>
</html>
<%@ Page Language="VB" 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="VB" runat="server">
Sub ImageButton_Command(sender As Object, e As CommandEventArgs)
If (e.CommandName = "Sort") And (e.CommandArgument = "Ascending") Then
Label1.Text = "You clicked the Sort Ascending Button"
Else
Label1.Text = "You clicked the Sort Descending Button"
End If
End Sub
</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 Ascending"
ImageUrl="images/pict.jpg"
OnCommand="ImageButton_Command"
CommandName="Sort"
CommandArgument="Ascending"/>
<asp:ImageButton id="imagebutton2" runat="server"
AlternateText="Sort Descending"
ImageUrl="images/pict2.jpg"
OnCommand="ImageButton_Command"
CommandName="Sort"
CommandArgument="Descending"/>
<br /><br />
<asp:label id="Label1" runat="server"/>
</form>
</body>
</html>
Remarks
Sometimes, multiple ImageButton controls are related and share the same value for the CommandName property, such as Sort
. Use this property to supplement the CommandName property with additional information about the command to perform, such as Ascending
. The values of the CommandName and CommandArgument properties are typically used in the OnCommand event handler to determine the action to perform when the ImageButton control is clicked.
This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins.
Applies to
See also
.NET
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