WPF 控制程序只能启动一次

??? public partial class App : Application
??? {
??????? System.Threading.Mutex mutex;

??????? public App()
??????? {
??????????? this.Startup += new StartupEventHandler(App_Startup);
??????? }

??????? void App_Startup(object sender, StartupEventArgs e)
??????? {
??????????? bool ret;
??????????? mutex = new System.Threading.Mutex(true, "WpfMuerterrrterterttex", out ret);
??????????? if (!ret)
??????????? {
??????????????? MessageBox.Show("Program has started, you can‘t start again!");
??????????????? Environment.Exit(0);
??????????? }
??????? }
??? }

感谢：http://www.cnblogs.com/xiaokang088/archive/2011/03/29/1998710.html

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