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Image.AddAttributesToRender Method

This method supports the .NET Framework infrastructure and is not intended to be used directly from your code.

Adds the attributes of an Image to the output stream for rendering on the client.

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

protected override void AddAttributesToRender (
	HtmlTextWriter writer
)
protected void AddAttributesToRender (
	HtmlTextWriter writer
)
protected override function AddAttributesToRender (
	writer : HtmlTextWriter
)

Parameters

writer

A System.Web.UI.HtmlTextWriter that contains the output stream to render on the client browser.

The following code example demonstrates how to override the AddAttributesToRender method in a custom server control so that the Image always displays with a thin border.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" AutoEventWireup="True" %>
<HTML>
	<HEAD>
		<title>Custom Image - AddAttributesToRender - C# Example</title>
	</HEAD>
	<body>
		<form id="Form1" method="post" runat="server">
			<h3>Custom Image - AddAttributesToRender - C# Example</h3>
			
			<aspSample:CustomImageAddAttributesToRender 
			  id="Image1" 
			  runat="server" 
			  ImageUrl="http://www.microsoft.com/homepage/gif/bnr-microsoft.gif" 
			  AlternateText="Microsoft Home" />
			
		</form>
	</body>
</HTML>
...using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomImageAddAttributesToRender : System.Web.UI.WebControls.Image
    {
        protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
        {
            // Show the Image with a thin border.
            writer.AddStyleAttribute("border-width","thin");

            // Call the Base's AddAttributesToRender method.
            base.AddAttributesToRender(writer);
        }
    }
}

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<HTML>
	<HEAD>
		<title>Custom Image - AddAttributesToRender - VJ# Example</title>
	</HEAD>
	<body>
		<form id="Form1" method="post" runat="server">
			<h3>Custom Image - AddAttributesToRender - VJ# Example</h3>
			
			<aspSample:CustomImageAddAttributesToRender 
			  id="Image1" 
			  runat="server" 
			  ImageUrl="http://www.microsoft.com/homepage/gif/bnr-microsoft.gif" 
			  AlternateText="Microsoft Home" />
			
		</form>
	</body>
</HTML>
...package Samples.AspNet.JSL.Controls; 

public class CustomImageAddAttributesToRender 
    extends System.Web.UI.WebControls.Image
{
    protected void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
        // Show the Image with a thin border.
        writer.AddStyleAttribute("border-width", "thin");
        // Call the Base's AddAttributesToRender method.
        super.AddAttributesToRender(writer);
    } //AddAttributesToRender
} //CustomImageAddAttributesToRender

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0
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