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Button.RenderContents Method

Renders the contents of the control to the specified writer.

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

protected internal override void RenderContents(
	HtmlTextWriter writer
)

Parameters

writer
Type: System.Web.UI.HtmlTextWriter

A System.Web.UI.HtmlTextWriter object that represents the output stream to render HTML content on the client.

The following code example demonstrates how to override the RenderContents method in a custom server control so that it always displays text following a custom Button server control.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page language="c#" %>
<!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 Button - RenderContents - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Button - RenderContents - C# Example</h3>

      <aspSample:CustomButtonRenderContents
        id="Button1"
        runat="server"
        Text="Button" />

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


...


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

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomButtonRenderContents : System.Web.UI.WebControls.Button
    {
    protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
    {
      // Call the base RenderContents method. 
      base.RenderContents(writer);

      // Append some text after the button.
      writer.Write("<br>Click this button for more information.");
    }
  }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
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