Method AppSingleInstance.AlreadyRunning

Overload

Detects whether a process of this app is already running.

public static bool AlreadyRunning(string mutex, IEnumerable<string> notifyArgs = null, int waitMS = 0)
Parameters
mutex  (string)

A unique string to use for mutex name (see System.Threading.Mutex.Mutex). If prefix @"Global\" used, detects processes in all user sessions.
notifyArgs  (IEnumerable<string>)

If not null:

  • If already running, sends it to that process, which receives it in AppSingleInstance.Notified event.
  • Else enables Notified event in this process.
waitMS  (int)

Milliseconds to wait until this process can run. No timeout if -1.
Returns
bool

True if already running.
Exceptions
InvalidOperationException

This function already called.
Exception