Button.RenderContents(HtmlTextWriter) Method
Definition
Important
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Renders the contents of the control to the specified writer.
protected:
override void RenderContents(System::Web::UI::HtmlTextWriter ^ writer);
protected public:
override void RenderContents(System::Web::UI::HtmlTextWriter ^ writer);
protected override void RenderContents (System.Web.UI.HtmlTextWriter writer);
protected internal override void RenderContents (System.Web.UI.HtmlTextWriter writer);
override this.RenderContents : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub RenderContents (writer As HtmlTextWriter)
Protected Friend Overrides Sub RenderContents (writer As HtmlTextWriter)
Parameters
- writer
- HtmlTextWriter
A HtmlTextWriter object that represents the output stream to render HTML content on the client.
Examples
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>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page language="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>
<title>Custom Button - RenderContents - VB.NET Example</title>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom Button - RenderContents - VB.NET 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.");
}
}
}
Imports System.Web
Imports System.Security.Permissions
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomButtonRenderContents
Inherits System.Web.UI.WebControls.Button
Protected Overrides Sub RenderContents(ByVal writer As System.Web.UI.HtmlTextWriter)
MyBase.RenderContents(writer)
' Append some text after the button.
writer.Write("<br>Click this button for more information.")
End Sub
End Class
End Namespace
Applies to
See also
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