Demonstration of Page_Error Handler : Server class « Development « ASP.NET Tutorial

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ASP.NET Tutorial » Development » Server class 
9. 39. 6. Demonstration of Page_Error Handler
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="PageExceptionTest" %>

<!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 runat="server">
    <title>Demonstration of Page_Error Handler</title>
</head>
<body>
    <form id="form1" runat="server">
    Demonstration of Page_Error Handler. This markup will never be displayed.
    </form>
</body>
</html>

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class PageExceptionTest : System.Web.UI.Page
{
   protected void Page_Load(object sender, EventArgs e)
   {
      BuggyMethod();   
   }

   private void BuggyMethod()
   {
      throw new ApplicationException("Your buggy code caused an exception.");
   }
   private void Page_Error(object sender, EventArgs e)
   {
      Exception ex = Server.GetLastError();
      Response.Write("<h1>An error has occurred</h1>");
      Response.Write("<h2>" + ex.Message + "</h2>");
      Response.Write("<pre>" + ex.StackTrace + "</pre>");
      Context.ClearError();
   }
}
9. 39. Server class
9. 39. 1. Use Server.HtmlEncode to encode HTML tags (C#)
9. 39. 2. Use Server.Transfer to transfer action to another aspx file (C#)
9. 39. 3. Server.UrlEncode
9. 39. 4. Forward the user to the information page, with the query string data (#)
9. 39. 5. Use Server.MapPath() to load the file in the current directory (VB.net)
9. 39. 6. Demonstration of Page_Error Handler
9. 39. 7. text generated by Execute can be embedded in the main response or cached in a writer object
9. 39. 8. Server.Execute
9. 39. 9. Server.GetLastError()
9. 39. 10. Server.HtmlDecode
9. 39. 11. Server.HtmlEncode
9. 39. 12. Server.MachineName
9. 39. 13. Server.MapPath
9. 39. 14. Server.ScriptTimeout
9. 39. 15. Server.Transfer
9. 39. 16. Server.UrlDecode
9. 39. 17. Server.UrlPathEncode
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