检查我的Windows应用程序是否正在运行

public partial class App : System.Windows.Application{    public bool IsProcessOpen(string name)    {        foreach (Process clsProcess in Process.GetProcesses())         { if (clsProcess.ProcessName.Contains(name)) {     return true; }        }        return false;    }    protected override void onStartup(StartupEventArgs e)    {        // Get Reference to the current Process        Process thisProc = Process.GetCurrentProcess();        if (IsProcessOpen("name of application.exe") == false)        { //System.Windows.MessageBox.Show("Application not open!"); //System.Windows.Application.Current.Shutdown();        }        else        { // Check how many total processes have the same name as the current one if (Process.GetProcessesByName(thisProc.ProcessName).Length > 1) {     // If ther is more than one, than it is already running.     System.Windows.MessageBox.Show("Application is already running.");     System.Windows.Application.Current.Shutdown();     return; } base.onStartup(e);        }    }