Asp.net mvc 3 定制网页ZorhostFactory

就像我可以通过调用

ControllerBuilder.Current.SetControllerFactory（）

在

global.asax

中将

DefaultControllerFactory设置为我自己的工厂一样，并提供工厂的自定义实现，是否有可能以某种方式为应用程序提供我自己的
Web GerazorHostFactory的实现？

我想要实现的是将视图封装在IoC容器中，以提供依赖注入。我已经阅读了以下关于Haacked的文章：我认为这可能会增加解决方案

以下操作似乎不起作用，并引发错误：

无法将“ASP.\U页面\视图\视图开始\ cshtml”类型的对象强制转换为“System.Web.WebPages.StartPage”

Global.asax：（C#project）

类定义：（VB项目）

)；在Web.config中：

<system.web.webPages.razor>
    <host factoryType="MyProject.MyWebPageRazorHost" />
    <pages pageBaseType="MyProject.CustomWebPage">
        <namespaces>
            <add namespace="MyProject.SomeNamespace" />
        </namespaces>
    </pages>
</system.web.webPages.razor>


; 这将大有帮助。

查看
mvc3 rtm sources\webpages\src\System.Web.webpages.Razor
我的意思是在
global.asax
中设置它，这样我就可以提供Windsor（我正在使用的IoC框架）的内核了，这是一个好问题；让我调查一下。至少，您可以制作一个包装器，从IoC创建一个内部实例。。。我收到以下错误：
无法将类型为“ASP.\u Page\u Views\u ViewStart\u cshtml”的对象强制转换为类型为“System.Web.WebPages.StartPage”。
请查看我附加的源代码…@Ropstah：将您的代码与源代码进行比较；看看它是如何编译StartPage的。
Public Class DefaultRazorBuildProvider : Inherits System.Web.WebPages.Razor.RazorBuildProvider
    Private Shared _factories As New ConcurrentDictionary(Of String, Func(Of IKernel, DefaultWebPageRazorHostFactory))(StringComparer.OrdinalIgnoreCase)
    Private Shared _kernel As IKernel

    Friend Shared TypeFactory As Func(Of String, Type) = AddressOf DefaultTypeFactory

    Public Shared Function GetKernel() As IKernel
        If _kernel Is Nothing Then Throw New NullReferenceException("_kernel is not set")

        Return _kernel
    End Function

    Public Shared Sub SetKernel(ByVal kernel As IKernel)
        _kernel = kernel
    End Sub

    Public Shared Function CreateHostFromConfig(ByVal virtualPath As String) As WebPageRazorHost
        Return CreateHostFromConfig(virtualPath, Nothing)
    End Function

    Public Shared Function CreateHostFromConfig(ByVal virtualPath As String, ByVal physicalPath As String) As WebPageRazorHost
        If [String].IsNullOrEmpty(virtualPath) Then
            Throw New ArgumentNullException("virtualPath")
        End If

        Return CreateHostFromConfigCore(GetRazorSection(virtualPath), virtualPath, physicalPath)
    End Function

    Public Shared Function CreateHostFromConfig(ByVal config As RazorWebSectionGroup, ByVal virtualPath As String) As WebPageRazorHost
        Return CreateHostFromConfig(config, virtualPath, Nothing)
    End Function

    Public Shared Function CreateHostFromConfig(ByVal config As RazorWebSectionGroup, ByVal virtualPath As String, ByVal physicalPath As String) As WebPageRazorHost
        If config Is Nothing Then
            Throw New ArgumentNullException("config")
        End If
        If [String].IsNullOrEmpty(virtualPath) Then
            Throw New ArgumentNullException("virtualPath")
        End If

        Return CreateHostFromConfigCore(config, virtualPath, physicalPath)
    End Function

    Friend Shared Function CreateHostFromConfigCore(ByVal config As RazorWebSectionGroup, ByVal virtualPath As String) As WebPageRazorHost
        Return CreateHostFromConfigCore(config, virtualPath, Nothing)
    End Function




    Private Shared Function CreateFactory(ByVal typeName As String) As Func(Of IKernel, DefaultWebPageRazorHostFactory)
        Dim factoryType As Type = TypeFactory(typeName)
        If factoryType Is Nothing Then
            Throw New InvalidOperationException("Factory type not valid")
        End If



        Dim param = Expression.Parameter(GetType(IKernel))

        Dim body = Expression.[New](factoryType.GetConstructor(New Type() {GetType(IKernel)}), param)
        Return Expression.Lambda(Of Func(Of IKernel, DefaultWebPageRazorHostFactory))(body, param).Compile()
    End Function



    Public Shared Sub ApplyConfigurationToHost(ByVal config As RazorPagesSection, ByVal host As WebPageRazorHost)
        host.DefaultPageBaseClass = config.PageBaseType

        For Each import As String In config.Namespaces.OfType(Of NamespaceInfo)().[Select](Function(ns) ns.[Namespace])
            host.NamespaceImports.Add(import)
        Next
    End Sub


    Friend Shared Function CreateHostFromConfigCore(ByVal config As RazorWebSectionGroup, ByVal virtualPath As String, ByVal physicalPath As String) As WebPageRazorHost

        virtualPath = EnsureAppRelative(virtualPath)

        If virtualPath.StartsWith("~/App_Code", StringComparison.OrdinalIgnoreCase) Then
            Return New WebCodeRazorHost(virtualPath, physicalPath)
        End If

        Dim factory As DefaultWebPageRazorHostFactory = Nothing
        If config IsNot Nothing AndAlso config.Host IsNot Nothing AndAlso Not [String].IsNullOrEmpty(config.Host.FactoryType) Then
            Dim factoryCreator As Func(Of IKernel, DefaultWebPageRazorHostFactory) = _factories.GetOrAdd(config.Host.FactoryType, CreateFactory(config.Type))
            Debug.Assert(factoryCreator IsNot Nothing)
            factory = factoryCreator(_kernel)
        End If

        Dim host As WebPageRazorHost = (If(factory, New DefaultWebPageRazorHostFactory(_kernel))).CreateHost(virtualPath, physicalPath)

        If config IsNot Nothing AndAlso config.Pages IsNot Nothing Then
            ApplyConfigurationToHost(config.Pages, host)
        End If

        Return host
    End Function

    Friend Shared Function GetRazorSection(ByVal virtualPath As String) As RazorWebSectionGroup
        Return New RazorWebSectionGroup() With { _
          .Host = DirectCast(WebConfigurationManager.GetSection(HostSection.SectionName, virtualPath), HostSection), _
          .Pages = DirectCast(WebConfigurationManager.GetSection(RazorPagesSection.SectionName, virtualPath), RazorPagesSection) _
        }
    End Function

    Private Shared Function EnsureAppRelative(ByVal virtualPath As String) As String
        If HostingEnvironment.IsHosted Then
            virtualPath = VirtualPathUtility.ToAppRelative(virtualPath)
        Else
            If virtualPath.StartsWith("/", StringComparison.Ordinal) Then
                virtualPath = "~" & virtualPath
            ElseIf Not virtualPath.StartsWith("~/", StringComparison.Ordinal) Then
                virtualPath = "~/" & virtualPath
            End If
        End If
        Return virtualPath
    End Function

    Private Shared Function DefaultTypeFactory(ByVal typeName As String) As Type
        Return BuildManager.[GetType](typeName, False, False)
    End Function
End Class

Public Class DefaultWebPageRazorHostFactory : Inherits System.Web.WebPages.Razor.WebRazorHostFactory
    Private _kernel As IKernel

    Public Sub New()
        Me._kernel = Nothing
    End Sub

    Public Sub New(ByVal kernel As IKernel)
        Me._kernel = kernel
    End Sub

    Public Overrides Function CreateHost(ByVal virtualPath As String, ByVal physicalPath As String) As System.Web.WebPages.Razor.WebPageRazorHost
        Return New DefaultWebPageRazorHost(Me._kernel, virtualPath, physicalPath)
    End Function
End Class

Public Class DefaultWebPageRazorHost : Inherits System.Web.WebPages.Razor.WebPageRazorHost
    Private _kernel As IKernel

    Sub New(ByVal kernel As IKernel, ByVal virtualPath As String, ByVal physicalPath As String)
        MyBase.New(virtualPath, physicalPath)
        Me._kernel = kernel
    End Sub
End Class

<system.web.webPages.razor>
    <host factoryType="MyProject.MyWebPageRazorHost" />
    <pages pageBaseType="MyProject.CustomWebPage">
        <namespaces>
            <add namespace="MyProject.SomeNamespace" />
        </namespaces>
    </pages>
</system.web.webPages.razor>