Strange error when my application just sits...

An unhandled exception of type 'System.NullReferenceException' occurred in system.dll

Additional information: Object reference not set to an instance of an object.


Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
at System.Net.OSSOCK.WSAGetOverlappedResult(IntPtr socketHandle, IntPtr overlapped, UInt32& bytesTransferred, Boolean wait, IntPtr ignored)
at System.Net.Sockets.OverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)

I get this error whenever I run the debugger and my application just sits there. After about 2, maybe 3 minutes it gives me this exception. Why?

Run it in debug mode, then post the code that causes the problem.

Sounds like you've declared something without initialising it.

It IS running in debug mode. It says there's no code for the error in question, and there's no threading code in my application.


Edit: Maybe it's a custom control that I'm using. Could be C1, or maybe the Glacial Components ListView. But since I don't have the source code for either I guess I won't know now, will I?

It's definitely your C1, since its erroring on the Socket class... which a Listview wouldn't use.

Seems if you have antivirus, McAffee in particular running, you get this error for certain.

It might not be necessarily McAffee, there are some other issues perhaps related to your framework version, or your network card even.


You might want to check out their web forums (web interface newsgroup) for the control you are using from ComponentOne.

http://www.componentone.com/pages.aspx?pagesid=52

I also found others with the same problem:
http://www.dotnet247.com/247referenc...42/214925.aspx

http://www.dotnet247.com/247referenc...42/214951.aspx