Dear Sir,
  Thanks for your response. I have read that article before, I also have a
book from juval lowy. Programming .Net component , Great book.
Maybe I have to say that I implement it this way is from his book or
recommendation. Since I have the experience to implement it using
asychronous method with heavy loading and running in 2 CPUs, I have to say
it really don't work. If you create 3x threads ,doing the asynchronous
invoke and bombard it with heavy loading in 2 CPU environment, you will face
this problem a few hours later. I never use lock so why one of my threads
hang? the thread job is simple--getting job from queue and call asynchrous
invoke to show data to listview. Where it comes from?
I once heard from Dot Net Rock that Joe Duffy said their thread pool has
known bugs, and asynchrous method use threadpool a lot.

   I have to rethink it in design view. Do I need to use *asynchronous
method invocation and multithreading?
*I 'm 100 percent sure the culprit is MS asynchronous method invocation and
multithread running on OS more than 1 CPU..
I have to make it de-couple, better use queue here, 3x threads instead of
calling invoke , they just put their data into queue and my gui thread
pulling data from the queue and update it on listview.
   What I can use for queue? The solution is a lots
Sqlite... it can not handle multi-write.
Db4o ... have to use client-server method and I have never used this before
, better not to use it.
MSMQ ... The system is on win2000 advance server, msmq is not the latest
version. can not use it,either
MySql ... I think it's the better way to implement the queue I need.
Why I want to use tools like this to implement queue, I can do it myself.
because I don't want to use lock , mysql can handle it for me.



  *


*
2006/9/7, Ryan Heath <[EMAIL PROTECTED]>:

You might want to have a look at the BackgroundWorker component, which
is really suited for backgroundworkerthreads that access the GUI.

If you are using .net 1.1, you can use the BackgroundWorker from Juval
Lowy,
which mimics the 2.0 version
http://www.devx.com/codemag/Article/20639?trk=DXRSS_DOTNET

HTH
// Ryan

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