TableCell.AddAttributesToRender Method

Adds properties specific to the TableCell control 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
)

Parameters

writer

The output stream that renders HTML content to the client.

Exception typeCondition

HttpException

A cell listed as an associated header cell was not found.

The AddAttributesToRender method overrides the base class's AddAttributesToRender method and first calls the base method and then adds the TableCell attributes corresponding to the RowSpan property, the ColumnSpan property and the AssociatedHeaderCellID property. If the AssociatedHeaderCellID property refers to a TableHeaderCell that can not be found, an HttpException is thrown.

The AddAttributesToRender method is used primarily by control developers extending the functionality of the TableCell control.

Notes to Inheritors When overriding the AddAttributesToRender method in a derived class, be sure to call the AddAttributesToRender method of the base class so that the TableCell control attributes are properly rendered.

The following code example demonstrates how to override the AddAttributesToRender method in a custom server control so that a custom title attribute is rendered for each cell.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
	<head>
		<title>Custom TableCell - AddAttributesToRender - C# Example</title>
  </head>
	<body>
		<form id="Form1" method="post" runat="server">
			<h3>Custom TableCell - AddAttributesToRender - C# Example</h3>
      
      <asp:Table 
        id="Table1" 
        runat="server" 
        CellPadding="3" 
        CellSpacing="2">
        <asp:TableRow>
          <aspSample:CustomTableCellAddAttributesToRender Text="(0,0)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(0,1)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(0,2)" />
        </asp:TableRow>
        <asp:TableRow>
          <aspSample:CustomTableCellAddAttributesToRender Text="(1,0)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(1,1)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(1,2)" />
        </asp:TableRow>
      </asp:Table>
      
		</form>
	</body>
</html>

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<html>
	<head>
		<title>Custom TableCell - AddAttributesToRender - VJ# Example</title>
  </head>
	<body>
		<form id="Form1" method="post" runat="server">
			<h3>Custom TableCell - AddAttributesToRender - VJ# Example</h3>
      
      <asp:Table 
        id="Table1" 
        runat="server" 
        CellPadding="3" 
        CellSpacing="2">
        <asp:TableRow>
          <aspSample:CustomTableCellAddAttributesToRender Text="(0,0)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(0,1)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(0,2)" />
        </asp:TableRow>
        <asp:TableRow>
          <aspSample:CustomTableCellAddAttributesToRender Text="(1,0)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(1,1)" />
          <aspSample:CustomTableCellAddAttributesToRender Text="(1,2)" />
        </asp:TableRow>
      </asp:Table>
      
		</form>
	</body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomTableCellAddAttributesToRender : System.Web.UI.WebControls.TableCell
  {
    protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
      // Write a Title attribute.
      writer.AddAttribute("title", "CustomAddAttributesToRender");

      // Call the base AddAttributesToRender method.
      base.AddAttributesToRender(writer);

    }
  }
}

package Samples.AspNet.JSL.Controls; 

public class CustomTableCellAddAttributesToRender
    extends System.Web.UI.WebControls.TableCell
{
    protected void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
		// Write a Title attribute.
		writer.AddAttribute("title", "CustomAddAttributesToRender");

        // Call the base AddAttributesToRender method.
        super.AddAttributesToRender(writer);
    } 

} 

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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