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PODeadlocking lock() method
 

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    <p>I'm facing a deadlock, my code structure is similar to this:</p> <pre><code>private delegate void UpdateControlDelegate(string value); public void UpdateControl(string value) { if (txtAddress.InvokeRequired) { txtAddress.Invoke(new UpdateControlDelegate(UpdateControl), value); } else { txtAddress.Text = value; // This is in GroupBox1 txtValue.Text = value; // This is in GroupBox2 } } class ThreadHandler { List&lt;string&gt; _list = new List&lt;string&gt;(); object _criticalSection = new object(); public ThreadHandler() { new Thread(new ThreadStart(Run)).Start(); } public static ThreadHandler _threadHandler = null; public static ThreadHandler GetThreadHandler() { if (_threadHandler == null) { _threadHandler = new ThreadHandler(); } return _threadHandler; } public void Run() { while (true) { // some code lock (_criticalSection) { foreach (string str in _list) { // some Code } } // some code Thread.Sleep(SomeTime); } } public void AddItem(string item) { lock (_criticalSection) { _list.Add(item); } } public void RemoveItem(string item) { lock (_criticalSection) { _list.Remove(item); } } } </code></pre> <p>But using the same code, I just modified the UpdateControl method like this:</p> <pre><code>private delegate void UpdateControlDelegate(string value); public void UpdateControl(string value) { if (InvokeRequired) { BeginInvoke(new UpdateControlDelegate(UpdateControl), value); } else { txtAddress.Text = value; // This is in GroupBox1 txtValue.Text = value; // This is in GroupBox2 } } </code></pre> <p>This is working fine. What is the problem?</p>
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    1. COI don't know how to post another question in the same page. so i raised my question in detail in another page. The lisk is given below http://stackoverflow.com/questions/556883/deadlock-in-lock
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    2. COThere should be an edit link under your question. Do not post duplicate questions, nor should you post "more information" in an answer. Edit the original question
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