Allow only one instance of a c# application
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This code creates a mutex before starting an application and releases the mutex when the application is closed. A user will only be able to start the application once. This can be used for services as well./// /// The main entry point for the application.///...
This code creates a mutex before starting an application and releases the mutex when the application is closed. A user will only be able to start the application once. This can be used for services as well.
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
public static void Main()
{
bool createdMutex = true;
Mutex mutex = new Mutex(true, "ConfigureApp", out createdMutex);
if (createdMutex && mutex.WaitOne())
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
mutex.ReleaseMutex();
}
else
{
MessageBox.Show("Only one application instance is allowed.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
mutex.Close();
}