Process instance = RunningInstance(); if (instance == null) { if (args != null && args.Length >= 1 && args[0] == "Startup") { Form1.bStartup = true; using (new Form1()) { Application.Run(); } } else { Application.Run(new Form1()); } } else { HandleRunningInstance(instance); Application.Exit(); }
private static Process RunningInstance() { Process current = Process.GetCurrentProcess(); Process[] processes = Process.GetProcessesByName(current.ProcessName); foreach (Process process in processes) { if (process.Id != current.Id) { try { if (current.MainModule.FileName == process.MainModule.FileName) { return process; } } catch { } break; } } return null; }
private static void HandleRunningInstance(Process instance) { IntPtr ihand = instance.MainWindowHandle; if (ihand == IntPtr.Zero) ihand = Program.FindWindow("WindowsForms10.Window.8.app.0.141b42a_r6_ad1", null); if (ihand == IntPtr.Zero) { MessageBox.Show("已经启动了此程序,请不要同时运行多个本程序。", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); } else { ShowWindowAsync(ihand, SW_SHOWNOMAL); SetForegroundWindow(ihand); } }