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Xml.Render(HtmlTextWriter) Method

  • Reference

Definition

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

Renders the results to the output stream.

protected:
 override void Render(System::Web::UI::HtmlTextWriter ^ output);
protected public:
 override void Render(System::Web::UI::HtmlTextWriter ^ output);
protected override void Render (System.Web.UI.HtmlTextWriter output);
protected internal override void Render (System.Web.UI.HtmlTextWriter output);
override this.Render : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub Render (output As HtmlTextWriter)
Protected Friend Overrides Sub Render (output As HtmlTextWriter)

Parameters

output
HtmlTextWriter

The result of the output stream.

Examples

The following code example demonstrates how to override the Render method in a custom server control so that the Xml control is always displayed with an image.

<%@ 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 Xml - Render - C# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Xml - Render - C# Example</h3>
            
            <aspSample:CustomXmlRender 
              id="xml1" 
              runat="server" 
              DocumentSource="People.xml" 
              TransformSource="PeopleTable.xslt" />
              
        </form>
    </body>
</html>

<%@ 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 Xml - Render - VB.NET Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Xml - Render - VB.NET Example</h3>
            
            <aspSample:CustomXmlRender id="xml1" runat="server" 
             DocumentSource="People.xml" TransformSource="PeopleTable.xslt" />
        </form>
    </body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomXmlRender : System.Web.UI.WebControls.Xml
  {
    protected override void Render(System.Web.UI.HtmlTextWriter writer)
    {
      // Create and render a new Image web control.
      System.Web.UI.WebControls.Image image = new System.Web.UI.WebControls.Image();
      image.ID = "Image1";
      image.ImageUrl = "image.jpg";	
      image.AlternateText = "Image for XML.";
      image.RenderControl(writer);

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

Imports System.Web
Imports System.Security.Permissions

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

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

            ' Create and render a new Image web control.
            Dim image As New System.Web.UI.WebControls.Image
            image.ID = "Image1"
            image.ImageUrl = "image.jpg"
            image.AlternateText = "Image for XML."
            image.RenderControl(writer)

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

Applies to

See also