application is now running on server or client

I use VB.NET for a Windows application.

How can I find out if the开发者_Go百科 application is now running on a server or client (programmatically)?

Thanks.

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This is a little ambiguous since any machine can be a server or a client. One way you could check is by inspecting the Environment.MachineName variable:

If  Environment.MachineName = "MyServerName" Then
  ''Do something here.
End If

MSDN : http://msdn.microsoft.com/en-us/library/system.environment.machinename.aspx