[RESOLVED] Allow only one instance of the program to run ?

how can i ensure that only one instance of my program is running at anytime and don't allow second instance to run if the first instance is still running. I've read somewhere that i have to use a Mutex variable; but i don't know how to use it.

Maybe this.

yes, one way is Mutex because it is cross process accesible Object.
another way is looking at list of running processes using ProcessInfo.

I'd go with toraj's suggestion, something like this:

Code:

---

using System;
using System.Diagnostics;

namespace MyApplication
{
    class Program
    {
        static void Main()
        {
            Process[] procs = Process.GetProcessesByName("MyApplication");
            if (procs.Length > 1)
                return;
            else
                Console.WriteLine("Hello World!");
        }
    }
}

---

i've tried foamy's way of getting the number of processes by name and seeing if its larger than 1 then close the new process and it worked. But i have sort of a small question; when i run the application from visual studio the process name is "processName.vshost.exe" but when i run it from the its exe file its name is normal i.e. "processName.exe"





anyway thank you all for the help;
Best Regards;
bluebarca