using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Linq; using System.Windows; using System.Diagnostics; using System.Data.SqlClient; namespace wpf { /// <summary> /// App.xaml 的交互逻辑 /// </summary> public partial class App : Application { public static System.Threading.Mutex Run; protected override void OnStartup(StartupEventArgs e) { //注册事件 Application.Current.DispatcherUnhandledException += Current_DispatcherUnhandledException; base.OnStartup(e); bool noRun = false; try { //判断是否在运行 Run = new System.Threading.Mutex(true, Process.GetCurrentProcess().ProcessName, out noRun); if (noRun) { //获取进程名 Process[] localByName = Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName); Run.ReleaseMutex(); //项目中配置文件中的信息 string path = ConfigurationManager.ConnectionStrings["conn"].ToString(); //判断数据的连接 SqlConnection con = new SqlConnection(path); try { con.Open(); if (con.State == ConnectionState.Open) { new Login().Show(); } else { MessageBox.Show("数据库连接失败!", "信息提示", MessageBoxButton.OK, MessageBoxImage.Warning); Application.Current.Shutdown(); } } catch (Exception q) { MessageBox.Show("数据库连接失败!", "信息提示", MessageBoxButton.OK, MessageBoxImage.Warning); Application.Current.Shutdown(); } } else { MessageBox.Show("程序已在运行!", "信息提示", MessageBoxButton.OK, MessageBoxImage.Information); //Application.Current.Shutdown(); // string proName= Process.GetCurrentProcess().ProcessName; } } catch (Exception q) { MessageBox.Show("数据库连接失败!", "信息提示", MessageBoxButton.OK, MessageBoxImage.Warning); Application.Current.Shutdown(); } } /// <summary> /// 程序未知的异常的方法事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void Current_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e) { MessageBox.Show("我们很抱歉,当前应用程序遇到一些问题,该操作已经终止,请重新启动.", "意外的操作", MessageBoxButton.OK, MessageBoxImage.Information);//这里通常需要给用户一些较为友好的提示,并且后续可能的操作 Application.Current.Shutdown(); //string proName = Process.GetCurrentProcess().ProcessName; // Process[] localByName = Process.GetProcessesByName(proName);//因为可以同时启动多 e.Handled = true;//使用这一行代码告诉运行时,该异常被处理了,不再作为UnhandledException抛出了。 } /// <summary> /// 根据进程名称进行关闭进程 /// </summary> /// <param name="procesName"></param> public void killPro(string procesName) { try { foreach (System.Diagnostics.Process Pro in System.Diagnostics.Process.GetProcessesByName(procesName)) { if (!Pro.CloseMainWindow()) { Pro.Kill(); } } } catch { } } } }