title: When the Client application is manualy closed how to know it in server side, using C#
body: <p>In a client server communcation, When the Client application is manualy closed how to know it in server side, using C#.</p>
  
  <p>I have disconnect chances in two ways.
  1. Manualy closing the client application
  2. network cable is unpluging.</p>
  
  <p>If any one have a solution please help me.</p>
  
  <p>Thank you.</p>