I am writing a C# console app. It's going to run as a scheduled task.
I want my EXE to exit quickly if it finds that another process is still running from the previous schedule task execution.
I can't seem to find the way to let my app detect the active processes, and so know whether it's already running or not.
Thanks for any ideas. Peter
One very common technique is to create a mutex when your process starts. If you cannot create the mutex it means there is another instance running.
This is the sample from Nathan's Link:
//Declare a static Mutex in the main form or class...
private static Mutex _AppMutex = new Mutex(false, "MYAPP");
// Check the mutex before starting up another possible instance
[STAThread]
static void Main(string[] args)
{
if (MyForm._AppMutex.WaitOne(0, false))
{
Application.Run(new MyForm());
}
else
{
MessageBox.Show("Application Already Running");
}
Application.Exit();
}
try System.Diagnostics.Process
getProcesses()
Use a mutex:
// Allow only one instance of app
// See http://www.yoda.arachsys.com/csharp/faq/#one.application.instance
bool firstInstance;
_mutex = new Mutex(false, "Local\\[UniqueName]", out firstInstance);
Isn't there something in System.Diagnostics for checking processes?
Edit: Do any of these links help you? I can see how they might be useful.
I'm sorry that all I can do is provide you links to other items. I've never had to use System.Diagnostics but hopefully it might help you or someone else out.
