Panel.AddAttributesToRender Method

Adds information about the background image, alignment, wrap, and direction to the list of attributes to render.

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
)
Not applicable.

Parameters

writer

An HtmlTextWriter that represents the output stream to render HTML content on the client.

Exception typeCondition

InvalidOperationException

The DefaultButton property of the Panel control must be the ID of a control of type IButtonControl.

The AddAttributesToRender method is used primarily by control developers.

The following code example demonstrates how to override the AddAttributesToRender method in a custom server control so that the Panel text always displays as bold.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ 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>Custom Panel - AddAttributesToRender - C# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Panel - AddAttributesToRender - C# Example</h3>
            
            <aspSample:CustomPanelAddAttributesToRender 
              id="Panel1" 
              runat="server" 
              BorderWidth="1px" 
              BorderStyle="Solid">
          <asp:Label id="Label1" runat="server">Label1</asp:Label>
      </aspSample:CustomPanelAddAttributesToRender>

        </form>
    </body>
</html>

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" 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>Custom Panel - AddAttributesToRender - VJ# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Panel - AddAttributesToRender - VJ# Example</h3>
            
            <aspSample:CustomPanelAddAttributesToRender 
              id="Panel1" 
              runat="server" 
              BorderWidth="1px" 
              BorderStyle="Solid">
          <asp:Label id="Label1" runat="server">Label1</asp:Label>
      </aspSample:CustomPanelAddAttributesToRender>

        </form>
    </body>
</html>

using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomPanelAddAttributesToRender : System.Web.UI.WebControls.Panel
  {
    protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
      // Show the Panel text as Bold 
      writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight, "bold");

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

package Samples.AspNet.JSL.Controls;

public class CustomPanelAddAttributesToRender
    extends System.Web.UI.WebControls.Panel
{
    protected void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
        // Show the Panel text as Bold 
        writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight,
            "bold");
        // Call the Base's AddAttributesToRender method.
        super.AddAttributesToRender(writer);
    } //AddAttributesToRender
} //CustomPanelAddAttributesToRender

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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