CODEWITHSUNDEEP
c#eventsfor-loop
topofsteel
topofsteel

Reputation: 1277

pause for loop till event

I'm calling a thread from within a for loop that closes a document. The problem is, the loop continues and tries to open another document before the code in the thread finishes. How can I pause the loop and wait for the document close event. Thanks.

edit

here is my code...

    public void OpenFile()
    {
        for (int i = 0; i < 3; i++)
        {
            if (i != 1)
            {
                try
                {
                    uiApp.OpenAndActivateDocument(TargetPath(i));
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
            ThreadPool.QueueUserWorkItem(new WaitCallback(CloseDoc));
        }
    }

    static void CloseDoc(object stateInfo)
    {
        try
        {
            SendKeys.SendWait("^{F4}");
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

I tried adding 'Thread.Sleep(3000)' after CloseDoc, that didn't work. It looks like 'waitone methods in manual/auto reset event classes' would be my best bet. @GAPS can you elaborate? Thank you!

Upvotes: 0

Views: 317

Answers (4)

Anton Sizikov
Anton Sizikov

Reputation: 9230

If you have to wait for each thread finishes, you may call all code in one thread. If you want to avoid freezing the UI - create a method:

public void DoWork()
{
   foreach(/*  your code here*/)
   {
      // do work with documents
   }
}

and run it in on non-ui thread.

Upvotes: 1

PawanS
PawanS

Reputation: 7193

Please elaborate your question... for time being to answer your question I will suggest you to use waitone methods in manual/auto reset event classes. you can notify your waiting thread that your document is closed and then you can proceed.

AutoReset

ManualReset

Upvotes: 0

Aghilas Yakoub
Aghilas Yakoub

Reputation: 28970

try with this code

 private object verrou = new object();

 for(int i = 0; i < index; i++)
 {
       lock (verrou )
        {
            // Access thread-sensitive resources.
        }
 }

Upvotes: 0

sonofaforester
sonofaforester

Reputation: 337

Without seeing your code, I can't answer for your specific case, but look into the lock keyword and/or wait handles

See this link:

http://msdn.microsoft.com/en-us/library/ms173179.aspx

Upvotes: 0

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