WPF 同一个程序 只允许 同时运行一个
方法2 当程序已经运行了 再运行这个程序时，则显示当前这个窗体 http://code.3rbang.com/cshape-run-one/ VS2013附件：http://files.cnblogs.com/xe2011/WpfApplication_System.Threading.Mutex.rar .NET 已经提供一个 类System.Threading.Mutex 所以不采用APICreateMutex 在App.xaml.cs 中实现代码,重这写OnStartup usingSystem; usingSystem.Collections.Generic; usingSystem.Configuration; usingSystem.Data; usingSystem.Windows; namespaceWpfApplication7 { ///<summary> ///App.xaml的交互逻辑 ///</summary> publicpartialclassApp:Application { #regionDllImport... [System.Runtime.InteropServices.DllImport("User32.dll")] privatestaticexternboolSetForegroundWindow(IntPtrhWnd); [System.Runtime.InteropServices.DllImport("User32.dll")] privatestaticexternboolShowWindowAsync(IntPtrhWnd,intcmdShow); privateconstintSW_SHOW=1; #endregion boolcreatedNew; protectedoverridevoidOnStartup(StartupEventArgse) { System.Threading.Mutexmutex=newSystem.Threading.Mutex(true,"HelloRoman",outcreatedNew); if(!createdNew) { System.Diagnostics.Processprogress1=GetExistProcess(); if(progress1!=null) { ShowMainWindow(progress1); Environment.Exit(0); } } } ///<summary> ///最前端显示主窗体 ///</summary> ///<paramname="process"></param> privatevoidShowMainWindow(System.Diagnostics.Processprocess) { IntPtrmainWindowHandle1=process.MainWindowHandle; if(mainWindowHandle1!=IntPtr.Zero) { ShowWindowAsync(mainWindowHandle1,SW_SHOW); SetForegroundWindow(mainWindowHandle1); } } ///<summary> ///查看程序是否已经运行 ///</summary> ///<returns></returns> privatestaticSystem.Diagnostics.ProcessGetExistProcess() { System.Diagnostics.ProcesscurrentProcess=System.Diagnostics.Process.GetCurrentProcess(); foreach(System.Diagnostics.Processprocess1inSystem.Diagnostics.Process.GetProcessesByName(currentProcess.ProcessName)) { if((process1.Id!=currentProcess.Id)&& (System.Reflection.Assembly.GetExecutingAssembly().Location==currentProcess.MainModule.FileName)) { returnprocess1; } } returnnull; } } }
方法1 usingSystem; usingSystem.Collections.Generic; usingSystem.Configuration; usingSystem.Data; usingSystem.Linq; usingSystem.Windows; namespaceWpfApplication6 { ///<summary> ///App.xaml的交互逻辑 ///</summary> publicpartialclassApp:Application { [System.Runtime.InteropServices.DllImport("kernel32.dll",EntryPoint="CreateMutex")] publicstaticexternIntPtrCreateMutex(intlpSecurityAttributes,boolbInitialOwner,stringlpName); [System.Runtime.InteropServices.DllImport("kernel32.dll",EntryPoint="GetLastError")] publicstaticexternintGetLastError(); privateconstintERROR_ALREADY_EXISTS=183; protectedoverridevoidOnStartup(StartupEventArgse) { stringappTitle="2014年5月31日7:28:29"; IntPtrhMutex=CreateMutex(0,true,appTitle); if(GetLastError()==ERROR_ALREADY_EXISTS) { MessageBox.Show("程序已经运行！"); Application.Current.Shutdown(); } } } }
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