避免在同一机器上同时运行同一应用程序的多个实例

 1         /// <summary>
 2         /// check whether other instance of the application is running.
 3         /// </summary>
 4         /// <returns></returns>
 5         private bool TestIfAlreadyRunning()
 6         {
 7             Process currentProcess = Process.GetCurrentProcess();
 8 
 9             foreach (var process in Process.GetProcesses())
10             {
11                 // avoid check this process itself.
12                 if(currentProcess.Id != process.Id)
13                 {
14                     //if other instance is running,the Process Name must identical.
15                     if (currentProcess.ProcessName == process.ProcessName)
16                         return true;
17                 }
18             }
19 
20             return false;
21         }