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Table.AddAttributesToRender(HtmlTextWriter) Method

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Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Adds HTML attributes and styles that need to be rendered to the specified HtmlTextWriter.

protected:
 override void AddAttributesToRender(System::Web::UI::HtmlTextWriter ^ writer);
protected override void AddAttributesToRender (System.Web.UI.HtmlTextWriter writer);
override this.AddAttributesToRender : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub AddAttributesToRender (writer As HtmlTextWriter)

Parameters

writer
HtmlTextWriter

The output stream that renders HTML content to the client.

Examples

The following code example demonstrates how to override the AddAttributesToRender method in a custom server control to add an attribute to the Table.

<%@ Page Language="C#" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>

<!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 id="Head2" runat="server">
    <title>Custom Table - AddAttributesToRender - C# Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom Table - AddAttributesToRender - C# Example</h3>

    <aspSample:CustomTableAddAttributesToRender 
        id="Table1" runat="server"
        GridLines="Both" CellPadding="4">
        <asp:TableRow>
            <asp:TableCell>Row 0, Col 0</asp:TableCell>
            <asp:TableCell>Row 0, Col 1</asp:TableCell>
        </asp:TableRow>
        <asp:TableRow>
            <asp:TableCell>Row 1, Col 0</asp:TableCell>
            <asp:TableCell>Row 1, Col 1</asp:TableCell>
        </asp:TableRow>
    </aspSample:CustomTableAddAttributesToRender>
      
    </div>
    </form>
</body>
</html>

<%@ Page Language="VB" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>

<!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 id="Head2" runat="server">
    <title>Custom Table - AddAttributesToRender - VB Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom Table - AddAttributesToRender - VB Example</h3>

    <aspSample:CustomTableAddAttributesToRender 
        id="Table1" runat="server"
        GridLines="Both" CellPadding="4">
        <asp:TableRow>
            <asp:TableCell>Row 0, Col 0</asp:TableCell>
            <asp:TableCell>Row 0, Col 1</asp:TableCell>
        </asp:TableRow>
        <asp:TableRow>
            <asp:TableCell>Row 1, Col 0</asp:TableCell>
            <asp:TableCell>Row 1, Col 1</asp:TableCell>
        </asp:TableRow>
    </aspSample:CustomTableAddAttributesToRender>
      
    </div>
    </form>
</body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomTableAddAttributesToRender : System.Web.UI.WebControls.Table
  {
    protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
      // Add a client-side onclick event to the button.
      writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Onclick, "alert('Hello World');");

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

Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomTableAddAttributesToRender
        Inherits System.Web.UI.WebControls.Table

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

            ' Add a client-side onclick event to the button.
            writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Onclick, "alert('Hello World');")

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

Remarks

This method is used primarily by control developers to insert the appropriate attributes and styles into the HtmlTextWriter output stream for a Table control. This method overrides WebControl.AddAttributesToRender.

Applies to

See also