我面临死锁,我的代码结构类似于:
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<string> _list = new List<string>();
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);
}
}
}
但是使用相同的代码,我只是像这样修改了 UpdateControl 方法:
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
}
}
这工作正常。问题是什么?