Ensure that only one program instance runs (C #) solution

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How can I ensure that only one program (instance) runs in C?
Answer: The main application is System. the Process class in the Diagnostics namespace is implemented. Before running the program, we can check whether there are any processes with the same name in the Process, and the running location is the same. If the program is not run, if yes, set the program window with the same name in the same position to the front.
Main code:
[C #]
Public static Process RunningInstance ()
{
Process current = Process. GetCurrentProcess ();
Process [] processes = Process. GetProcessesByName (current. ProcessName );
// Search for processes with the same name
Foreach (Process process in processes)
{
// Ignore the current process
If (process. Id! = Current. Id)
{
// Check whether the running location of the same process is the same.
If (Assembly. GetExecutingAssembly (). Location. Replace ("/", "") = current. MainModule. FileName)
{
// Return the other process instance.
Return process;
}
}
}
// No other instance was found, return null.
Return null;
}