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HtmlInputImage Class

Allows programmatic access to the HTML <input type= image> element on the server.

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

[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class HtmlInputImage : HtmlInputControl, 
	IPostBackDataHandler, IPostBackEventHandler
<asp:HtmlInputImage />

Use the HtmlInputImage control to create a button that displays an image. You can programmatically control the action associated with the HtmlInputImage control by providing an event handler for the ServerClick event.

The coordinates where the user clicks an HtmlInputImage control can be determined by using the ImageClickEventArgs.X and ImageClickEventArgs.Y properties of the System.Web.UI.ImageClickEventArgs object that is passed as a parameter to the user-defined event handler.

For a list of initial property values for an instance of HtmlInputImage, see the HtmlInputImage constructor.

The following code example demonstrates how to use the HtmlInputImage control to create a button that displays an image.

NoteNote:

You must provide your own image files for this example to work correctly.

<%@ 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" >
   <script runat="server">

     protected void SubmitBtn_Click(object sender, ImageClickEventArgs e)
     {
       Message.InnerHtml = "The Submit button was clicked.";
     }

     protected void ClearBtn_Click(object sender, ImageClickEventArgs e)
     {
       Message.InnerHtml = "The Clear button was clicked.";
     }

</script>

   <head runat="server">
    <title>HtmlInputImage Example</title>
</head>
<body>
      <h3>HtmlInputImage Example</h3>

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

         <input type="image"
                alt="Submit button" 
                src="Submit.jpg" 
                onserverclick="SubmitBtn_Click" 
                runat="server"
                id="Image1" />

         <input type="image"
                alt="Clear button" 
                src="Clear.jpg" 
                onserverclick="ClearBtn_Click" 
                runat="server"
                id="Image2" />

         <h1> 

         <span id="Message" 
               runat="server">
         </span>

         </h1>

      </form>

   </body>

</html>

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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, 1.1, 1.0

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