Question

Possible Duplicate:
Returning a value from thread?

I have this code:

//Asynchronously start the Thread to process the Execute command request.
Thread objThread = new Thread(new ParameterizedThreadStart(ExecuteCommandSync));
//Make the thread as background thread.
objThread.IsBackground = true;
//Set the Priority of the thread.
objThread.Priority = ThreadPriority.AboveNormal;
//Start the thread.
objThread.Start(command);

The problem is that ExecuteCommandSync returns a string.

How can i capture the string that is returned and return it?

Answer 1

You cannot use ParameterizedThreadStart if the callback returns something. Try the following:

Thread objThread = new Thread(state => 
{
    string result = ExecuteCommandSync(state);
    // TODO: do something with the returned result
});
//Make the thread as background thread.
objThread.IsBackground = true;
//Set the Priority of the thread.
objThread.Priority = ThreadPriority.AboveNormal;
//Start the thread.
objThread.Start(command);

Also notice that objThread.Start starts the thread and returns immediately. So make sure that the hosting process doesn’t end before the thread finishes executing as because you made it a background thread it will be aborted. Otherwise don’t make it background thread.