Server.GetLastError() : Server class « Development « ASP.NET Tutorial






  1. ASP.NET Tutorial
  2. Development
  3. Server class
<%@ Page Language="VB" %>
<html>
<head>
   <title>Examining the Last Error</title>
   <script runat="server">

      Sub CauseError(sender As Object, e As EventArgs)

         Dim x, y, z As Integer
         
         y = 1
         z = 0
         x = y / z

      End Sub

      Sub Page_Error(Source As Object, E As EventArgs)

         Dim LastError As Exception
         Dim ErrMessage As String

         LastError = Server.GetLastError()

         If Not LastError Is Nothing Then
            ErrMessage = LastError.Message
         Else
            ErrMessage = "No Errors"
         End If

         Response.Write("Last Error = " & ErrMessage & "<br/><br/>")

         Server.ClearError()

      End Sub

   </script>
</head>
<body>

   <form runat="server">
      <h4><font face="verdana">Cause an Error to Occur...</font></h4>
      <asp:button text="CauseError" OnClick="CauseError" runat="server"/>
   </form>

</body>
</html>








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