Calendar.Render(HtmlTextWriter) Method

Definition

Displays the Calendar control on the client.

protected override void Render (System.Web.UI.HtmlTextWriter writer);
protected internal override void Render (System.Web.UI.HtmlTextWriter writer);

Parameters

writer
HtmlTextWriter

A HtmlTextWriter that contains the output stream for rendering on the client.

Examples

The following code example demonstrates how to override the Render method in a custom server control so that the Calendar always displays an image.

<%@ 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 Calendar - Render - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Calendar - Render - C# Example</h3>

      <aspSample:CustomCalendarRender
        id="Calendar1"
        runat="server" />

    </form>
  </body>
</html>
using System.Web;
using System.Security.Permissions;

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

        // Render a BR HTML tag
        writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Br);

        // 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 Calendar1.";
        image.RenderControl(writer);
        }
    }
}

Applies to

Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1