Question

我刚安装了Xamarin工作室，试用OSX上的F＃体验。安装工作正常，我可以创建F＃教程项目，但是当它尝试打开Tutorial.fs文件时，我收到以下消息：

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.MissingMethodException: Method not found: 'Mono.TextEditor.Highlighting.ResourceXmlProvider.Open'.
  at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00000] in <filename unknown>:0 
  at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) [0x00000] in <filename unknown>:0 
  at System.Activator.CreateInstance (System.Type type) [0x00000] in <filename unknown>:0 
  at Mono.Addins.TypeExtensionNode.CreateInstance () [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/TypeExtensionNode.cs:93 
  at MonoDevelop.SourceEditor.SyntaxModeCodon.get_SyntaxMode () [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SyntaxModeCodon.cs:42 
  at MonoDevelop.SourceEditor.SyntaxModeService+<SyntaxModeService>c__AnonStorey17.<>m__61 (Mono.TextEditor.TextDocument d) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SyntaxModeService.cs:45 
  at Mono.TextEditor.Highlighting.SyntaxModeProvider.Create (Mono.TextEditor.TextDocument doc) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxMode.cs:839 
  at Mono.TextEditor.Highlighting.SyntaxModeService.GetSyntaxMode (Mono.TextEditor.TextDocument doc, System.String mimeType) [0x00036] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxModeService.cs:157 
  at MonoDevelop.SourceEditor.SourceEditorView.UpdateMimeType (System.String fileName) [0x00042] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:926 
  at MonoDevelop.SourceEditor.SourceEditorView.Load (System.String fileName, System.Text.Encoding loadEncoding) [0x00040] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:792 
  at MonoDevelop.SourceEditor.SourceEditorView.Load (System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:729 
  at MonoDevelop.Ide.Gui.LoadFileWrapper.Invoke (System.String fileName) [0x00107] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Workbench.cs:1181

双击该文件也会产生上述消息。该文件在Xamarin工作室中可见。如果我使用mono 3.0.10，我可以运行教程项目并打开终端并执行文件。我正在使用xamarin studio 4.0.4版，并安装了mono 3.0.10和2.10.12。

还有一件我不明白的事情可能是相关的，并且在引用中我警告说FSharp.Core不适用于Mono / .NET 4.0（在mono 3.0.10中）。我认为这会阻止我运行文件，但这不是我不确定它是否相关的原因。

Answer 1

我认为您需要使用最新版本的F＃绑定，因为该错误是Xamarin Studio版本4.0.1和4.0.3之间的重大变化。

您没有指定当前使用的版本，但是如果您使用addin频道的最新版本或手动：F# binding 3.2.15一切都应该正常。

您提到的FSharp.Core问题也是known issue。

Answer 2

我最近遇到过这个问题，直到我使用最新版本升级到alpha版本3.3后才能解决这个问题。

Xamarin工作室无法打开F＃文件

2 个答案: