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升级Elmish v4.2后Elmish.WPF的startElmishLoop启动失败求助

问题:Elmish v4.2与Elmish.WPF v4.0.0-beta-44兼容问题?

将项目升级至Elmish v4.2后,使用Elmish.WPF v4.0.0-beta-44启动时崩溃,调用代码如下:

WpfProgram.mkProgram init update bindings
 |> WpfProgram.withLogger (new SerilogLoggerFactory(logger))
 |> WpfProgram.startElmishLoop mainWindow 

调用WpfProgram.startElmishLoop时抛出System.MissingMethodException,错误详情:

System.MissingMethodException
HResult=0x80131513
Message=Method not found: 'Elmish.Program4<System.__Canon,!!2,System.__Canon,!!3> Elmish.ProgramModule.withSyncDispatch(Microsoft.FSharp.Core.FSharpFunc2<Microsoft.FSharp.Core.FSharpFunc2<System.__Canon,Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpFunc2<System.__Canon,Microsoft.FSharp.Core.Unit>>, Elmish.Program4<System.__Canon,!!2,System.__Canon,!!3>)'. Source=Elmish.WPF StackTrace: at Elmish.WPF.WpfProgram.startElmishLoop[model,msg](FrameworkElement element, WpfProgram2 program)
at Stargate.XI.Client.MainWindowModule.main(FrameworkElement mainWindow) in C:\Stargate.XI\Stargate.XI.Client 0.0.6\Stargate.XI.Client\Stargate.XI.Client\MainWindow.fs:line 123
at Stargate.XI.Client.Views.App.StartElmish(Object sender, EventArgs e) in C:\Stargate.XI\Stargate.XI.Client 0.0.6\Stargate.XI.Client\Stargate.XI.Client.Views\App.xaml.cs:line 28
at System.Windows.Application.OnActivated(EventArgs e)
at System.Windows.Application.WmActivateApp(Int32 wParam)
at System.Windows.Application.AppFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)

后续发现编译警告提示版本依赖约束问题:

"Detected package version outside of dependency constraint: Elmish.WPF 4.0.0-beta-44 requires Elmish (>= 3.1.0 && <= 3.99.0) but version Elmish 4.2.0 was resolved."

安装Elmish.WPF v4.0.0-beta-55后问题解决。询问:Elmish.WPF与Elmish v4.2是否兼容?若兼容,正确调用方式是什么?


解答

  • 版本兼容性说明:Elmish.WPF v4.0.0-beta-44与Elmish v4.2不兼容,该版本的Elmish.WPF依赖约束明确要求Elmish版本在3.1.0到3.99.0之间,而Elmish v4.2超出范围,导致内部调用的withSyncDispatch方法签名不匹配,引发崩溃。
  • 解决方法:升级Elmish.WPF到兼容Elmish v4.2的版本,如v4.0.0-beta-55,该版本已更新依赖约束以支持Elmish v4.x系列。
  • 调用方式正确性:你原有的代码调用逻辑是正确的,崩溃问题完全源于版本依赖不兼容,升级Elmish.WPF版本后无需修改代码即可正常运行。

内容的提问来源于stack exchange,提问作者Alan Wayne

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最近更新时间:2026.06.21 02:57:35