问VisualStudio2019UI问题完成此操作所需的数据尚未可用。(HRESULT例外: 0x8000000A)

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        1 Error   
      
        Why am I seeing this page?   
     
     
      
     
      
       The data necessary to complete this operation is not yet available. (Exception from HRESULT: 0x8000000A)     
     
      
     
      
     
    Instances of this error (1)  
     
    1.   Hide Call Stack 
     
    at Microsoft.VisualStudio.Designer.Interfaces.IVSMDCodeDomProvider.get_CodeDomProvider()
    at Microsoft.VisualStudio.Shell.Design.Serialization.CodeDom.CodeDomDocDataAdapter.get_Provider()
    at Microsoft.VisualStudio.Shell.Design.Serialization.CodeDom.CodeDomDocDataAdapter.get_CompileUnit()
    at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
    --- End of stack trace from previous location where exception was thrown ---
    at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
    at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)  
     

 


  [1]: https://i.stack.imgur.com/5blAr.png