wierd exception - C# / C Sharp

=?Utf-8?B?ZHNoZW1lc2g=?=

Hello,
I have a C# project with windows forms.
I sometimes get unprdictable .NET exceptions. I don't always get them, so I
can't reproduce where exactly it happens. I can generally say it happens when
closing the application (maybe in the dispose method?).
Here are 2 examples:

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.Call WindowProc(IntP tr
wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.NativeWin dow.DefWndProc( Message& m)
at System.Windows. Forms.Form.DefW ndProc(Message& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)
System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.SetF ocus(HandleRef hWnd)
at System.Windows. Forms.Container Control.FocusAc tiveControlInte rnal()
at System.Windows. Forms.Form.set_ Active(Boolean value)
at System.Windows. Forms.Form.WmAc tivate(Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

Any ideas?

thanks,
--
dshemesh

May 28 '07 #1

Subscribe Reply

2826

Michael A. Covington

I take it you are not, yourself, doing anything with unsafe mode or anything
unusual?

How do you close the application? Application.Exi t() ? Closing the main
form? Something else?
"dshemesh" <ds******@discu ssions.microsof t.comwrote in message
news:8B******** *************** ***********@mic rosoft.com...

Hello,
I have a C# project with windows forms.
I sometimes get unprdictable .NET exceptions. I don't always get them, so
I
can't reproduce where exactly it happens. I can generally say it happens
when
closing the application (maybe in the dispose method?).
Here are 2 examples:

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.Call WindowProc(IntP tr
wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.NativeWin dow.DefWndProc( Message& m)
at System.Windows. Forms.Form.DefW ndProc(Message& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage&
m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)
System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.SetF ocus(HandleRef hWnd)
at System.Windows. Forms.Container Control.FocusAc tiveControlInte rnal()
at System.Windows. Forms.Form.set_ Active(Boolean value)
at System.Windows. Forms.Form.WmAc tivate(Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage&
m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

Any ideas?

thanks,
--
dshemesh

May 28 '07 #2

=?Utf-8?B?ZHNoZW1lc2g=?=

You are correct.
I have no idea what these methods do.
I close the application using System.Environm ent.Exit(-1).
--
dshemesh
"Michael A. Covington" wrote:

I take it you are not, yourself, doing anything with unsafe mode or anything
unusual?

How do you close the application? Application.Exi t() ? Closing the main
form? Something else?
"dshemesh" <ds******@discu ssions.microsof t.comwrote in message
news:8B******** *************** ***********@mic rosoft.com...
Hello,
I have a C# project with windows forms.
I sometimes get unprdictable .NET exceptions. I don't always get them, so
I
can't reproduce where exactly it happens. I can generally say it happens
when
closing the application (maybe in the dispose method?).
Here are 2 examples:

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.Call WindowProc(IntP tr
wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.NativeWin dow.DefWndProc( Message& m)
at System.Windows. Forms.Form.DefW ndProc(Message& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage&
m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)
System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.SetF ocus(HandleRef hWnd)
at System.Windows. Forms.Container Control.FocusAc tiveControlInte rnal()
at System.Windows. Forms.Form.set_ Active(Boolean value)
at System.Windows. Forms.Form.WmAc tivate(Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage&
m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

Any ideas?

thanks,
--
dshemesh

May 28 '07 #3

Miroslav Stampar [MCSD.NET / Security+]

Try this:
http://www.ondotnet.com/pub/a/dotnet...readabort.html

HTH :)

Basically, ThreadAbortExce ption is thrown when thread is being aborted
to alert user to perform maintenance cleansing. It's benign exception
and you can do this for quick fix:

try
{
............... ..your code........... .....
}
catch (ThreadAbortExc eption)
{
}

May 28 '07 #4

Jorge

On May 28, 10:22 am, dshemesh <dshem...@discu ssions.microsof t.com>
wrote:

Hello,
I have a C# project with windows forms.
I sometimes get unprdictable .NET exceptions. I don't always get them, so I
can't reproduce where exactly it happens. I can generally say it happens when
closing the application (maybe in the dispose method?).
Here are 2 examples:

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.Call WindowProc(IntP tr
wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.NativeWin dow.DefWndProc( Message& m)
at System.Windows. Forms.Form.DefW ndProc(Message& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.SetF ocus(HandleRef hWnd)
at System.Windows. Forms.Container Control.FocusAc tiveControlInte rnal()
at System.Windows. Forms.Form.set_ Active(Boolean value)
at System.Windows. Forms.Form.WmAc tivate(Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

Any ideas?

thanks,
--
dshemesh

Are you spawning threads in your app?
Sometimes it happens when you close an application and some threads
are still running.

May 28 '07 #5

Michael A. Covington

"dshemesh" <ds******@discu ssions.microsof t.comwrote in message
news:75******** *************** ***********@mic rosoft.com...

You are correct.
I have no idea what these methods do.
I close the application using System.Environm ent.Exit(-1).

May 28 '07 #6

Michael A. Covington

"dshemesh" <ds******@discu ssions.microsof t.comwrote in message
news:75******** *************** ***********@mic rosoft.com...

You are correct.
I have no idea what these methods do.
I close the application using System.Environm ent.Exit(-1).

System.Environm ent.Exit(code) expects you to stop all the other threads
first. In a windowed application. Application.Exi t() is preferred. Is
there a good reason a windowed app needs to return an exit code?

May 28 '07 #7

=?Utf-8?B?ZHNoZW1lc2g=?=

I don't really have to return an exit code, so there is no problem for me to
use Application.Exi t(). Will this stop all the running threads for me?

--
dshemesh
"Michael A. Covington" wrote:

>
"dshemesh" <ds******@discu ssions.microsof t.comwrote in message
news:75******** *************** ***********@mic rosoft.com...
You are correct.
I have no idea what these methods do.
I close the application using System.Environm ent.Exit(-1).

System.Environm ent.Exit(code) expects you to stop all the other threads
first. In a windowed application. Application.Exi t() is preferred. Is
there a good reason a windowed app needs to return an exit code?

May 29 '07 #8

=?Utf-8?B?ZHNoZW1lc2g=?=

I do not know of any threads usage in my code. Maybe since I have a few forms
in the application some threads are opened and closed automatically (and then
one or more is not closed properly?)?
--
dshemesh
"Jorge" wrote:

On May 28, 10:22 am, dshemesh <dshem...@discu ssions.microsof t.com>
wrote:
Hello,
I have a C# project with windows forms.
I sometimes get unprdictable .NET exceptions. I don't always get them, so I
can't reproduce where exactly it happens. I can generally say it happens when
closing the application (maybe in the dispose method?).
Here are 2 examples:

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.Call WindowProc(IntP tr
wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.NativeWin dow.DefWndProc( Message& m)
at System.Windows. Forms.Form.DefW ndProc(Message& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

System.Threadin g.ThreadAbortEx ception: Thread was being aborted.
at System.Windows. Forms.UnsafeNat iveMethods.SetF ocus(HandleRef hWnd)
at System.Windows. Forms.Container Control.FocusAc tiveControlInte rnal()
at System.Windows. Forms.Form.set_ Active(Boolean value)
at System.Windows. Forms.Form.WmAc tivate(Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

Any ideas?

thanks,
--
dshemesh

Are you spawning threads in your app?
Sometimes it happens when you close an application and some threads
are still running.

May 29 '07 #9

=?Utf-8?B?ZHNoZW1lc2g=?=

Hi Michael,
I tried using Application.Exi t() and encountered the following problems:
1. After calling Application.Exi t() the code continues to run. It does not
really terminate the application (I am calling Application.Exi t() from the
main method of my application). I see this when in debug mode.
2. I still get sometimes the exception...

thanks,
--
dshemesh
"Michael A. Covington" wrote:

>
"dshemesh" <ds******@discu ssions.microsof t.comwrote in message
news:75******** *************** ***********@mic rosoft.com...
You are correct.
I have no idea what these methods do.
I close the application using System.Environm ent.Exit(-1).

System.Environm ent.Exit(code) expects you to stop all the other threads
first. In a windowed application. Application.Exi t() is preferred. Is
there a good reason a windowed app needs to return an exit code?

May 29 '07 #10

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