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I am working on window application in which consists 5 modules.When I use update module and click on update button it takes too much of time to process and at last show an error as and:-

"The semaphore timeout period has expired"

I am using a simple query for update process as :-
cmd1.CommandText = "update newpropertyimages set idno = '" & TextBox1.Text & "' where idno='" & ComboBox3.Text & "'"
             cmd1.Connection = con
             cmd1.CommandTimeout = 0
             MessageBox.Show("ID No udated)

And same happens with delete process
plz help me...
Updated 1-May-13 0:44am
Keith Barrow 1-May-13 6:15am
Can you add the stacktrace to your question? You don't normally get this error with sql commands, it could be something in the transport layer that the connection sits on, or be some other semaphore timing out.

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