Adding PostBack capabilities to a server control (C#) : PostBack « Custom Controls « ASP.NET Tutorial

1. ASP.NET Tutorial
2. Custom Controls
3. PostBack

using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebControlLibrary1
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:WebCustomControl3 runat=server></{0}:WebCustomControl3>")]
    public class WebCustomControl3 : WebControl
    {
        protected override void Render(HtmlTextWriter output)
        {
            PostBackOptions p = new PostBackOptions(this);

            output.AddAttribute(HtmlTextWriterAttribute.Onclick,
                Page.ClientScript.GetPostBackEventReference(p));
            output.AddAttribute(HtmlTextWriterAttribute.Value, "My Button");
            output.AddAttribute(HtmlTextWriterAttribute.Id, this.ClientID);
            output.AddAttribute(HtmlTextWriterAttribute.Name, this.ClientID);
            output.RenderBeginTag(HtmlTextWriterTag.Button);
            output.RenderEndTag();
        }
    }
}