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bool test = UploadRWLock.IsWriteLockHeld;
UploadRWLock.EnterWriteLock();
try
{
CloseSelectedTree(SelectedPJ);
SelectedPJ.IsChecked = false;
}
catch(Exception ee)
{
string str = ee.Message;
}
finally
{
UploadRWLock.ExitWriteLock();
}