ASP Net - Strange "Object reference not set to an instance of an object" error in webform

08-09-2004, 02:52 PM

I suddenly received an unexpected error in my project. I have been working
on this project for some time without this issue. Nothing has changed in the
form that caused the exception. A little experimentation shows that I cannot
run ANY .NET web project without getting this error:

----------------------------------------------------------------------------
----

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 1: <%@ Page Language="vb" AutoEventWireup="false"
Codebehind="Login.aspx.vb" Inherits="DataBayWeb.Login" %>
Line 2: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
Line 3: <HTML>

Source File: c:\inetpub\wwwroot\DataBayWeb\login.aspx Line: 1

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an
object.]
System.Web.UI.Control.get_Controls()
System.Web.UI.Control.AddParsedSubObject(Object obj)

System.Web.UI.Control.System.Web.UI.IParserAccesso r.AddParsedSubObject(Objec
t obj)
ASP.Login_aspx.__BuildControlTree(Control __ctrl) in
c:\inetpub\wwwroot\DataBayWeb\login.aspx:1
ASP.Login_aspx.FrameworkInitialize()
System.Web.UI.Page.ProcessRequest()
System.Web.UI.Page.ProcessRequest(HttpContext context)

System.Web.CallHandlerExecutionStep.System.Web.Htt pApplication+IExecutionSte
p.Execute()
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean&
completedSynchronously)

Other developers on my team can run the latest version of the project
without an issue. What has happened?

Chris

Chris Magoun

08-20-2004, 05:29 AM

Very strange indeed. It might sound obscure, but try removing the
space in <%@ Page...

Otherwise, I would be tempted to do the inevitable and reinstall the
framework.

Simon.

Simon Zandberg

08-20-2004, 05:29 AM	#2
Simon Zandberg Posts: n/a	Re: Strange "Object reference not set to an instance of an object" error in webform Very strange indeed. It might sound obscure, but try removing the space in <%@ Page... Otherwise, I would be tempted to do the inevitable and reinstall the framework. Simon. Simon Zandberg

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08-09-2004, 02:52 PM	#1
	Strange "Object reference not set to an instance of an object" error in webform I suddenly received an unexpected error in my project. I have been working on this project for some time without this issue. Nothing has changed in the form that caused the exception. A little experimentation shows that I cannot run ANY .NET web project without getting this error: ---------------------------------------------------------------------------- ---- 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 1: <%@ Page Language="vb" AutoEventWireup="false" Codebehind="Login.aspx.vb" Inherits="DataBayWeb.Login" %> Line 2: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> Line 3: <HTML> Source File: c:\inetpub\wwwroot\DataBayWeb\login.aspx Line: 1 Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] System.Web.UI.Control.get_Controls() System.Web.UI.Control.AddParsedSubObject(Object obj) System.Web.UI.Control.System.Web.UI.IParserAccesso r.AddParsedSubObject(Objec t obj) ASP.Login_aspx.__BuildControlTree(Control __ctrl) in c:\inetpub\wwwroot\DataBayWeb\login.aspx:1 ASP.Login_aspx.FrameworkInitialize() System.Web.UI.Page.ProcessRequest() System.Web.UI.Page.ProcessRequest(HttpContext context) System.Web.CallHandlerExecutionStep.System.Web.Htt pApplication+IExecutionSte p.Execute() System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean& completedSynchronously) Other developers on my team can run the latest version of the project without an issue. What has happened? Chris Chris Magoun