Visual Studio 2015設計器中的System.ArgumentException

設計器的工作原理與正常情況相似嗎？那麼突然，我收到一條錯誤消息。Visual Studio 2015設計器中的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。只是一個簡單的信息，沒什麼。所以我嘗試尋找解決方案。沒有。我一直在尋找四天，試圖讓這個工作。但它沒有。我試圖修復，卸載然後重新安裝，我甚至嘗試了devenv/resetuserdata和devenv.exe/safemode，仍然無法正常工作。即使試圖創建一個新用戶，然後嘗試它。沒有。我花了很長時間安裝15'更新，仍然沒有。錯誤不會消失。我甚至在Blend嘗試它！仍然不起作用。我甚至安裝了Windows 10週年紀念更新！仍然無法工作。

有人可以幫忙。

來源

2016-09-17 user3831089

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

仍然無法正常工作。 – user3831089

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

我通過刪除運行程序的驅動器中名爲「程序」的文件來修復它。

來源

2016-10-06 01:23:08 user3831089

Visual Studio 2015設計器中的System.ArgumentException

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