Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 10:         'Response.Write(Request.ServerVariables("HTTP_REFERER"))
Line 11:         'Response.End()
Line 12:         If strUrl.Length < 3 Then
Line 13:             strUrl = "gioithieu.aspx"
Line 14:         End If

Source File: E:\Archives\DichvucongTructuyen\Manguon\Tructuyen\Changengonngu.aspx.vb    Line: 12

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Tructuyen_Changengonngu.Page_Load(Object sender, EventArgs e) in E:\Archives\DichvucongTructuyen\Manguon\Tructuyen\Changengonngu.aspx.vb:12
   System.Web.UI.Control.OnLoad(EventArgs e) +102
   System.Web.UI.Control.LoadRecursive() +67
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1380


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.2623.0