c# - Application freezes outside of Visual Studio. While starting it from Visual Studio it works -

slowly i'm overworked...

i have huge application threading, timers, invoke (not begininvoke, synchronous) , application.doevents.

it post here , don't know problem is.

every method of mine inside try catch. every catch logged.

if start application visual studio (f5) or while profiling via ants there no problem. application runs since days. start same debug version via windows explorer freezes every few hours. freezes without exception or so. if attach visual studio application , break it, stops on application.run(new form1());

i'm confused , have no idea repair it.

it .net 3.5 winforms application

it looks 1 thread hangs here:

if (grabber.invokerequired) {     console.writeline("grabber.invokerequired");     this.invoke((methodinvoker) delegate { grabber.navigate("http://www.google.de"); }); // <-- hang } else {     grabber.navigate(ig.starturl); } 

this snippet part of timer event

_timeout = new system.timers.timer(10000); _timeout.elapsed += new elapsedeventhandler(onwatchdogbark); 

edit

a sample doevents(). in lock() , in invoke

grabber.documentcompleted -= grabber_documentcompleted; grabber.navigate("http://www.google.de");  while (grabber.readystate != webbrowserreadystate.complete) {     timeout--;     application.doevents();     thread.sleep(200);      if (timeout < 0)     {         timeout = 50;         grabber.navigate("http://www.google.de");     } } 

currently use system.windows.forms.timer , locks there no improvement.

okay used windbg informations

edit: 14.06.2012

!threads

                                      preemptive   gc alloc           lock        id osid threadobj    state     gc       context       domain   count apt exception    0    1 37ec 007cab18      6020 enabled  00000000:00000000 007c8510     0 sta system.argumentexception (02762ba8)    2    2 85b8 007d7c38      b220 enabled  00000000:00000000 007c8510     0 mta (finalizer) xxxx    3    0 06e9f548      9820 enabled  00000000:00000000 007c8510     0 ukn   21    5 3464 0d6dc598   200b020 enabled  28cb5820:28cb5fe8 007c8510     0 mta   22    6 62b0 0d6db9e0   200b220 enabled  00000000:00000000 007c8510     0 mta   23    7 8e58 0d6db5f8    80a220 enabled  00000000:00000000 007c8510     0 mta (threadpool completion port) xxxx    4    0 06f62d40   1801820 enabled  00000000:00000000 007c8510     0 ukn (threadpool worker) xxxx    f    0 132a3290   1801820 enabled  00000000:00000000 007c8510     0 ukn (threadpool worker) xxxx   10    0 132a3678   1801820 enabled  00000000:00000000 007c8510     0 ukn (threadpool worker) xxxx    e    0 132a26d8   1801820 enabled  00000000:00000000 007c8510     0 ukn (threadpool worker) xxxx    9    0 0d6db210   1801820 enabled  00000000:00000000 007c8510     0 ukn (threadpool worker) 

!dlk

examining syncblocks... scanning readerwriterlock instances... scanning holders of readerwriterlock locks... scanning readerwriterlockslim instances... scanning holders of readerwriterlockslim locks... examining criticalsections... not find symbol ntdll!rtlcriticalsectionlist. no deadlocks detected. 

could possible deadlock in background thread. try looking @ other threads block app.

toolbar -> debug -> windows -> threads 

http://msdn.microsoft.com/en-us/library/w15yf86f.aspx

there should multiple threads , if double click 1 see line stopping app.

and if line in code:

control.checkforillegalcrossthreadcalls = false; 

set true again. possible cause dead locks background thread accessing controls.

instead of writing backgroud threads.

button1.text = "hello" 

write this.

this.invoke(() => button1.text = "hello");