ASP.NET MVC Override HandleError 导致视图无法渲染

Question

在我的应用程序中，我使用“HandleError”，如果发生错误，则会呈现我的“Error.vbhtml”视图。这工作得很好，但现在我也想记录错误。我构建了一个自定义 HandleError 类，继承了 HandleErrorAttribute，并重写了 OnException 方法。

现在我的错误被记录下来，但是 Error.vbhtml 视图没有被渲染......我在搞乱什么？

Imports System.Web.Mvc

Namespace Mvc.Attributes
    Public Class HandleError : Inherits System.Web.Mvc.HandleErrorAttribute
        Private ExceptionService As Domain.IExceptionService
        Public Sub New()
            ExceptionService = New Domain.ExceptionService(New Domain.ExceptionRepository)
        End Sub

        Public Overrides Sub OnException(ByVal exceptionContext As ExceptionContext)
            ''# Log the exception if it has not been handled elsewhere
            If Not exceptionContext.ExceptionHandled Then
                ExceptionService.AddException(exceptionContext.Exception)
                ExceptionService.SubmitChanges()
                ''# Signal to the system that we've handled the exception
                exceptionContext.ExceptionHandled = True
            End If
        End Sub
    End Class
End Namespace

Answer 1

我刚刚在Codeplex上看了一下HandleError方法的源代码。我从那里获取了一些代码

        Dim controllerName As String = DirectCast(filterContext.RouteData.Values("controller"), String)
        Dim actionName As String = DirectCast(filterContext.RouteData.Values("action"), String)
        Dim model As New HandleErrorInfo(filterContext.Exception, controllerName, actionName)
        filterContext.Result = New ViewResult() With { _
         .ViewName = View, _
         .MasterName = Master, _
         .ViewData = New ViewDataDictionary(Of HandleErrorInfo)(model), _
         .TempData = filterContext.Controller.TempData _
        }
        filterContext.ExceptionHandled = True
        filterContext.HttpContext.Response.Clear()
        filterContext.HttpContext.Response.StatusCode = 500

        ''# Certain versions of IIS will sometimes use their own error page when
        ''# they detect a server error. Setting this property indicates that we
        ''# want it to try to render ASP.NET MVC's error page instead.
        filterContext.HttpContext.Response.TrySkipIisCustomErrors = True

这似乎有效