ImageButton Control

Definition and Usage

The ImageButton control is used to display a clickable image.

Properties

Property	Description
CausesValidation	By default, a page is validated when a Button control is clicked. To prevent a page from being validated when clicking on a Button control, set this property to "false"
Command	The command associated with the Command event
CommandArgument	Additional information about the command to perform
id	A unique id for the control
ImageUrl	The URL of the image to display
OnClick	The name of the function to be executed when the image is clicked
runat	Specifies that the control is a server control. Must be set to "server"

Example 1

In the following example we declare one ImageButton control and one Label control in an .aspx file. When the user clicks on the image, the image_Click subroutine is executed. The subroutine sends the message "Coordinates: " and the x and y coordinates of the click to the Label control:

<script runat="server">
  Sub image_Click(sender As Object, e As ImageClickEventArgs) 
    mess.Text="Coordinates: (" & e.X & ", " & e.Y & ")"
  End Sub
</script>

<html>
<body>
<form runat="server">
<h3>Click on the image:</h3>
<asp:ImageButton id="image1" runat="server"
ImageUrl="..\images\smiley.gif"
OnClick="image_Click"/>
<br /><br />
<asp:label id="mess" runat="server"/>
</form>
</body>
</html>

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