Visual Studio 2015设计器中的System.ArgumentException

设计器的工作原理与正常情况相似吗？那么突然，我收到一条错误消息。Visual Studio 2015设计器中的System.ArgumentException

System.ArgumentException 
An item with the same key has already been added. 
    at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) 
    at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) 
    at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value) 
    at Microsoft.VisualStudio.DesignTools.Utility.Telemetry.VsTelemetryService.RegisterDesignerProcessSession(Int32 pid) 
    at Microsoft.VisualStudio.DesignTools.Utility.Feedback.WatsonTracker.RegisterSession(Int32 processID) 
    at Microsoft.VisualStudio.DesignTools.Utility.DesignerSessionTracker.RecordDesignerStart(Int32 processID, String isolationTargetIdentifier, Boolean mockCustomTypes, String buildConfiguration) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, IIsolationTarget isolationTarget, String baseDirectory) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.Initialize() 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.CreateInstance[T](Type type) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedObjectFactory.Initialize() 
    at Microsoft.VisualStudio.DesignTools.DesignerHost.Services.VSIsolationService.CreateObjectFactory(IIsolationTarget isolationTarget, IObjectCatalog catalog) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.CreateLease(IIsolationTarget isolationTarget, CancellationToken cancelToken, DesignerServiceEntry& entry, IServiceProvider serviceOverrides) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.InvokeWithCulture[T](CultureInfo culture, Func`2 func, CancellationToken cancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.<>c__DisplayClass10_0`1.<StartTask>b__0() 
    at System.Threading.Tasks.Task`1.InnerInvoke() 
    at System.Threading.Tasks.Task.Execute()

所以，我就像：好的。只是一个简单的信息，没什么。所以我尝试寻找解决方案。没有。我一直在寻找四天，试图让这个工作。但它没有。我试图修复，卸载然后重新安装，我甚至尝试了devenv/resetuserdata和devenv.exe/safemode，仍然无法正常工作。即使试图创建一个新用户，然后尝试它。没有。我花了很长时间安装15'更新，仍然没有。错误不会消失。我甚至在Blend尝试它！仍然不起作用。我甚至安装了Windows 10周年纪念更新！仍然无法工作。

有人可以帮忙。

来源

2016-09-17 user3831089

安装VS2015 upd3的最新更新，它包含XAML设计器修正：https://msdn.microsoft.com/en-US/library/mt752379.aspx – magicandre1981

仍然无法正常工作。 – user3831089

以安全模式运行V：https://msdn.microsoft.com/en-us/library/ms241278.aspx – magicandre1981

我通过删除运行程序的驱动器中名为“程序”的文件来修复它。

来源

2016-10-06 01:23:08 user3831089

Visual Studio 2015设计器中的System.ArgumentException

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