Use the C # thread mechanism to run a single instance of an application

 

As long as the Main entry in your program is as follows, you can only have one program instance at a time when your program is running, such as Winamp. When it is running, if you try again, you will not run an instance.

The code is simple.

[STAThread]

Static VoidMain (String[] Args)

{

BoolIsExist;

 System. Threading. Mutex mutex =NewSystem. Threading. Mutex (True, "MyApp ",OutIsExist ); 

// Here, myApp is the program identifier. We recommend that you replace it with the physical path of your program. In this way, if this flag is in one operating system, it will not conflict with other programs.

If (isExist)Environment. Exit (1); // The instance already exists. Exit the program

}