Single Document Interface [how to]

Question

let's suppose i make an application in C#(winforms), we can run multiple instances of the same application by just running the exe[clr], i want that there should be only one instance allowed... i think its close to the defination of SDI [single document interface]... how to do it.

Answer 1

You should use a Mutex to check for just one instance, like explained here: Using Mutex to force only one instance of Form and here Creating a single-instance application

Answer 2

Another good solution would be here or here