Panel.AddAttributesToRender Method (System.Web.UI.WebControls)

.NET Framework Class Library

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 Overrides Sub AddAttributesToRender ( _
	writer As HtmlTextWriter _
)

protected override void AddAttributesToRender(
	HtmlTextWriter writer
)

protected:
virtual void AddAttributesToRender(
	HtmlTextWriter^ writer
) override

abstract AddAttributesToRender : 
        writer:HtmlTextWriter -> unit 
override AddAttributesToRender : 
        writer:HtmlTextWriter -> unit

Parameters

writer: Type: System.Web.UI..::.HtmlTextWriter
An HtmlTextWriter that represents the output stream to render HTML content on the client.

Exceptions

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

Remarks

The AddAttributesToRender method is used primarily by control developers.

Examples

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.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ 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>Custom Panel - AddAttributesToRender - VB.NET Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Panel - AddAttributesToRender - VB.NET 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.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>


<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomPanelAddAttributesToRender
    Inherits System.Web.UI.WebControls.Panel

    Protected Overrides Sub AddAttributesToRender(ByVal writer As System.Web.UI.HtmlTextWriter)

        ' Show the Panel text as Bold 
        writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight, "bold")

        ' Call the Base's AddAttributesToRender method.
        MyBase.AddAttributesToRender(writer)
    End Sub
End Class


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);
    }
  }
}

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

Reference

Panel Class

System.Web.UI.WebControls Namespace

Other Resources

Panel Web Server Control Overview

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