instance of application

How can I ensure that there is only one instance of an application open for user?

http://www.c-sharpcorner.com/Code/20...leInstance.asp

Thanks!

looking at your stuff you will need
to use Mutex,

by using it you will be able to control one copy of ur instance
check it by
isanyinstance method .

checkout
System.Diagnostic.Process also

Paresh