XAML设计器无法打开(发生未经处理异常).

Question

使用版本:vs2017 社区版

新建项目后使用设计器就会显示此错误.Blend中问题依然存在.

异常信息:

System.Runtime.InteropServices.COMException
异常来自 HRESULT:0xD00000F3
   在 Microsoft.VisualStudio.DesignTools.UwpDesignerHost.AppPackage.AppPackageNativeMethods.IApplicationActivationManager.ActivateApplication(String appUserModelId, String activationContext, ActivateOptions options, Int32& processId)
   在 Microsoft.VisualStudio.DesignTools.UwpDesignerHost.AppPackage.AppPackageHelper.ActivateApplication(String appUserModelId, Boolean designerMode, String activationContext, Object site)
   在 Microsoft.VisualStudio.DesignTools.UwpDesignerHost.UwpHostPlatform.ActivateApplication(String appUserModelId, Boolean designerMode, String activationContext, Object site)
   在 Microsoft.VisualStudio.DesignTools.XamlDesignerHost.Platform.AppContainerProcessDomainFactory.ActivateApplicationInternal(String appUserModelId, String activationContext, Object site)
   在 Microsoft.VisualStudio.DesignTools.XamlDesignerHost.Platform.AppContainerProcessDomainFactory.CreateDesignerProcess(String applicationPath, String clientPort, Uri hostUri, IDictionary environmentVariables, Int32& processId, Object& processData)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, IIsolationTarget isolationTarget, String baseDirectory)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
   在 Microsoft.VisualStudio.DesignTools.XamlDesignerHost.Platform.AppContainerProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.Initialize()
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.CreateInstance[T](Type type)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedObjectFactory.Initialize()
   在 Microsoft.VisualStudio.DesignTools.DesignerHost.Services.VSIsolationService.CreateObjectFactory(IIsolationDomainFactory isolationDomainFactory, IObjectCatalog catalog)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationDomainFactory domainFactory)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.CreateLease(IIsolationDomainFactory domainFactory, CancellationToken cancelToken, DesignerServiceEntry& entry, IServiceProvider serviceOverrides)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.InvokeWithCulture[T](CultureInfo culture, Func`2 func, CancellationToken cancelToken)
   在 Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.<>c__DisplayClass10_0`1.<StartTask>b__0()
   在 System.Threading.Tasks.Task`1.InnerInvoke()
   在 System.Threading.Tasks.Task.Execute()

请求帮助!

Answer 1

一方面是VS的原因的话，试着重装下VS,另一方面，可能是第三方插件的原因，试着禁用第三方插件，再或是是自己代码的原因，试着修改下代码，看能否排除错误原因。

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专注于.NET ERP/CRM开发框架，C/S架构，SQL Server + ORM(LLBL Gen Pro) + Infragistics WinForms

Answer 2

Hi,

根据你提供的信息，我下载了VS2017，并且安装UWP需要的东西。

我使用XAML设计器，没有出现你说的这种现象，

我建议你修复一下你的VS2017.

Best Regards,

Hart

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