Help with cause of error please

[harry]

Hi

This error appears from time to time either when my VB.NET program starts or
at some time during runtime. It is absolutely inconsistent. I change nothing
in my code and yet after I restart the program the error may or may not
appear again until some unknopwn future time. Sometimes the error doesn't
appear for days, other times it appears often in 1 day. It is very strange.

///
An unhandled exception of type 'System.NullRef erenceException ' occurred in
system.windows. forms.dll

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

Public Class frmMain <<<<<< this line triggers the error
Inherits System.Windows. Forms.Form


Could someone give me a link or idea on how to trap this error so that I may
get more detailed explanation of it's cause. If the error was triggered in a
sub/function I can trap with try/catch, however how do I catch unhandled
errors in the entire class?

Thanks
Harry

[Ken Tucker [MVP]]

Re: Help with cause of error please

Hi,

Hard to say what is causing the error without seeing your code.

Ken
----------------

"harry" <harry@nospam > wrote in message
news:egrc0UNVEH A.1952@TK2MSFTN GP12.phx.gbl:[color=blue]
> Hi
>
> This error appears from time to time either when my VB.NET program starts
> or
> at some time during runtime. It is absolutely inconsistent. I change
> nothing
> in my code and yet after I restart the program the error may or may not
> appear again until some unknopwn future time. Sometimes the error doesn't
>
> appear for days, other times it appears often in 1 day. It is very
> strange.
>
> ///
> An unhandled exception of type 'System.NullRef erenceException ' occurred in
>
> system.windows. forms.dll
>
> Additional information: Object reference not set to an instance of an
> object.
> ///
>
> Public Class frmMain <<<<<< this line triggers the error
> Inherits System.Windows. Forms.Form
>
>
> Could someone give me a link or idea on how to trap this error so that I
> may
> get more detailed explanation of it's cause. If the error was triggered in
> a
> sub/function I can trap with try/catch, however how do I catch unhandled
>
> errors in the entire class?
>
> Thanks
> Harry
>[/color]

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[Sriram Krishnan]

Re: Help with cause of error please

It would help if you could post more code - atleast the code in your startup



--
Sriram Krishnan
Microsoft Student Ambassador
Manager - Chennai .NET Student User Group (www.cnugstudent.net)
I blog at http://www.dotnetjunkies.com/weblog/sriram

[Armin Zingler]

Re: Help with cause of error please

"harry" <harry@nospam > schrieb[color=blue]
> Hi
>
> This error appears from time to time either when my VB.NET program
> starts or at some time during runtime. It is absolutely inconsistent.
> I change nothing in my code and yet after I restart the program the
> error may or may not appear again until some unknopwn future time.
> Sometimes the error doesn't appear for days, other times it appears
> often in 1 day. It is very strange.
>
> ///
> An unhandled exception of type 'System.NullRef erenceException '
> occurred in system.windows. forms.dll
>
> Additional information: Object reference not set to an instance of
> an object.
> ///
>
> Public Class frmMain <<<<<< this line triggers the error
> Inherits System.Windows. Forms.Form
>
>
> Could someone give me a link or idea on how to trap this error so
> that I may get more detailed explanation of it's cause. If the error
> was triggered in a sub/function I can trap with try/catch, however
> how do I catch unhandled errors in the entire class?[/color]

Post the callstack when the error occurs.


--
Armin

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