Question

我试图将我的旧项目从3.0.0.0升级到4.0.0.1，它给我100多个错误

例如。当前上下文中不存在名称“模型” “ViewBag”这个名称在当前的上下文中不存在当前上下文中不存在名称“T” 等等

继承我的web.config

<?xml version="1.0" encoding="utf-8"?>
<!--
For more information on how to configure your ASP.NET application, please   visit
    http://go.microsoft.com/fwlink/?LinkId=152368
-->
<configuration>
<configSections>
    <section name="routeMapping" type="flubes.Configuration.Routing.RouteMappingConfiguration, flubes" requirePermission="false" />
    <section name="site" type="flubes.Configuration.SiteConfiguration, flubes" requirePermission="false" />
    <section name="redirector" type="flubes.Configuration.Redirector.RedirectorConfiguration, flubes" requirePermission="false" />
    <section name="integration" type="flubes.Configuration.Integration.IntegrationConfiguration, flubes" requirePermission="false" />
    <section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog" requirePermission="false" />
</configSections>
<appSettings>
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings>
<routeMapping configSource="Config\Routes.config" />
<site configSource="Config\Site.config" />
<redirector configSource="Config\Redirector.config" />
<integration configSource="Config\Integration.config" />
<nlog configSource="Config\Logging.config" />
<connectionStrings>
<add name="Forums" connectionString="Data Source=ADAM\MSSQLSERVER2;Initial   Catalog=forums;User ID=sa;Password=xxxx;Integrated Security=TRuE;" />
    <add name="Membership" connectionString="Data   Source=ADAM\MSSQLSERVER2;Initial Catalog=forums;User   ID=sa;Password=xxxx;Integrated Security=TRUE;" />
    <!--    <add name="YourDb" connectionString="Data Source=localhost;Initial Catalog=AdventureWorksLT2008;User   ID=sa;Password=12345678" providerName="System.Data.SqlClient" />

    The above connectionstring with name "forums" will be used by the site.
    Below this line you can see 2 samples of connection strings, one that    points to a Microsoft SQL Server database and other that points to a MySql   database.
    <add name="ForumsMSSQL" connectionString="Data Source=localhost;Initial   Catalog=Forums;User ID=sa;Password=12345678"   providerName="System.Data.SqlClient"/>
    <add name="ForumsMySql" connectionString="Server=localhost;Database=forums;Uid=user;Pwd=12345678;" providerName="MySql.Data.MySqlClient"/>
-->
</connectionStrings>
<system.data>
    <DbProviderFactories>
        <remove invariant="MySql.Data.MySqlClient" />
        <add invariant="MySql.Data.MySqlClient" name="MySQL Data Provider" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data" />
    </DbProviderFactories>
</system.data>
<!--
<system.net>
    <mailSettings>
        <smtp deliveryMethod="SpecifiedPickupDirectory"  from="admin@yoursite.com">
            <specifiedPickupDirectory pickupDirectoryLocation="c:\Temp\" />
        </smtp>
    </mailSettings>
</system.net>
-->
<system.web>
    <authentication mode="Forms" />
    <membership defaultProvider="ForumsMembershipProvider">
        <providers>
            <clear />
            <add name="ForumsMembershipProvider"   type="System.Web.Security.SqlMembershipProvider"  connectionStringName="Membership" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="true" passwordFormat="Hashed" maxInvalidPasswordAttempts="30" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" passwordStrengthRegularExpression="" applicationName="flubes" />
<!--
            <add name="ForumsMembershipProvider"
                 type="MySql.Web.Security.MySQLMembershipProvider, MySql.Web, Version=6.3.6.0, Culture=neutral"
                 connectionStringName="Forums" 
                 enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="true" passwordFormat="Hashed" maxInvalidPasswordAttempts="30" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" passwordStrengthRegularExpression="" applicationName="flubes"/>
-->
        </providers>
    </membership>
    <compilation debug="true" targetFramework="4.0">
        <assemblies>
            <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            <add assembly="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            <add assembly="System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            <add assembly="System.Web.WebPages, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        </assemblies>
    </compilation>
    <customErrors mode="Off" />
    <pages>
        <namespaces>
            <add namespace="System.Web.Helpers" />
            <add namespace="System.Web.Mvc" />
            <add namespace="System.Web.Mvc.Ajax" />
            <add namespace="System.Web.Mvc.Html" />
            <add namespace="System.Web.Routing" />
            <add namespace="System.Web.WebPages" />
        </namespaces>
    </pages>
    <trust level="Full" />
    <httpHandlers>
        <remove verb="GET,HEAD,POST" path="*" />
        <add verb="*" path="*" type="flubes.Web.Handlers.StaticFileHandler,   flubes.Web" />
    </httpHandlers>
    <httpModules>
        <add name="RedirectorModule" type="flubes.Web.Modules.RedirectorModule, flubes.Web" />
        <add name="ModelBinderModule" type="flubes.Web.Modules.ModelBinderModule, flubes.Web" />
        <add name="CompressionModule" type="flubes.Web.Modules.CompressionModule, flubes.Web" />
    </httpModules>
    <httpRuntime requestValidationMode="2.0" />
</system.web>
<!-- 
IIS 7.0.  or above
-->
<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <modules runAllManagedModulesForAllRequests="true">
        <add name="RedirectorModule" type="flubes.Web.Modules.RedirectorModule, flubes.Web" />
        <add name="ModelBinderModule" type="flubes.Web.Modules.ModelBinderModule, flubes.Web" />
    </modules>
</system.webServer>
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
            <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
            <bindingRedirect oldVersion="0.0.0.0-4.0.0.1" newVersion="4.0.0.1" />
        </dependentAssembly>
    </assemblyBinding>
    </runtime>
   </configuration>

继承人观点/ web.config

<?xml version="1.0"?>
<configuration>
<configSections>
    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
        <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
        <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
    </sectionGroup>
</configSections>
<system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    <pages pageBaseType="flubes.Web.UI.BaseViewPage">
        <namespaces>
            <add namespace="System.Web.Mvc" />
            <add namespace="System.Web.Mvc.Ajax" />
            <add namespace="System.Web.Mvc.Html" />
            <add namespace="System.Web.Routing" />
            <add namespace="flubes"/>
            <add namespace="flubes.Dto"/>
            <add namespace="flubes.Validation"/>
            <add namespace="flubes.Configuration"/>
            <add namespace="flubes.Web.Extensions"/>
            <add namespace="System.Security"/>
            <add namespace="System.Collections"/>
        </namespaces>
    </pages>
</system.web.webPages.razor>

<appSettings>
    <add key="webpages:Enabled" value="false" />
</appSettings>

<system.web>
    <httpHandlers>
        <add path="*" verb="*" type="System.Web.HttpNotFoundHandler"/>
    </httpHandlers>

    <!--
    Enabling request validation in view pages would cause validation to occur
    after the input has already been processed by the controller. By default
    MVC performs request validation before a controller processes the input.
    To change this behavior apply the ValidateInputAttribute to a
    controller or action.
-->
    <pages
        validateRequest="false"
        pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter,  System.Web.Mvc, Version=4.0.0.1, Culture=neutral,  PublicKeyToken=31BF3856AD364E35"
        pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
        userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
        <controls>
            <add assembly="System.Web.Mvc, Version=4.0.0.1, Culture=neutral,  PublicKeyToken=31BF3856AD364E35" namespace="System.Web.Mvc" tagPrefix="mvc" />
        </controls>
    </pages>
</system.web>

<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />

    <handlers>
        <remove name="BlockViewHandler"/>
        <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
    </handlers>
</system.webServer>
</configuration>

Answer 1

Visual Studio非常适合管理大多数任务的项目，但升级依赖项是经常出错的地方。通常，您需要通过直接编辑.csproj文件来进行手动干预。

首先，保存解决方案中要保存的所有工作。然后在解决方案资源管理器中右键单击您的MVC项目，然后单击＆＃34;卸载项目＆＃34;。这将只为项目留下一个节点，然后是(unavailable)。右键单击该节点，然后选择Edit XXX.csproj，其中XXX是您的项目名称。在弹出的任何对话框上单击“确定”。这将打开.csproj文件的XML视图（实际上是MSBuild文件）。向下滚动文件，查找对System.Web.Mvc，System.Web.Razor和System.Web.WebPages.Razor的引用是否正确，确保没有重复的Reference条目 。如果配置正确，它应如下所示。

<Reference Include="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <Private>True</Private>
  <HintPath>..\packages\Microsoft.AspNet.Mvc.4.0.20710.0\lib\net40\System.Web.Mvc.dll</HintPath>
</Reference>
<Reference Include="System.Web.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <Private>True</Private>
  <HintPath>..\packages\Microsoft.AspNet.Razor.4.0.20715.0\lib\net40\System.Web.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <Private>True</Private>
  <HintPath>..\packages\Microsoft.AspNet.WebPages.4.0.20710.0\lib\net40\System.Web.WebPages.Razor.dll</HintPath>
</Reference>

请注意，上面的示例适用于.NET framework 4.0。要定位另一个框架版本，您应该将\net40\段更改为packages文件夹中最接近的版本。此外，您应始终检查以确保在HintPath。

中指定的位置存在文件

完成后，保存文件，然后在解决方案资源管理器中右键单击项目节点，然后单击Reload Project。

如果您的项目具有引用MVC的依赖项目，则应对所有项目重复相同的过程。

如果您的项目具有引用MVC的依赖DLL，请首先尝试获取引用MVC的正确版本的版本。如果不存在，则使用binding redirects确保所有从属DLL使用相同的MVC版本。

<configuration>
    <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="0.0.0.0-4.0.0.1" newVersion="4.0.0.1" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" />
                <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
            </dependentAssembly>
        </assemblyBinding>
    </runtime>
</configuration>

注意：如果您正在使用MVC的其他功能，则可能会有更多引用和绑定重定向更新，而不是上面列出的内容。找出所需版本的最简单方法是创建一个新的MVC 4项目，将相同的引用（新版本）添加到新项目中，然后分析.csproj和web.config文件以引入正确配置您要升级的项目。

当然，您还需要在涉及版本的任何地方检查并升级web.config文件中的引用，但您显然已经完成了该步骤。

从mvc 3.0.0.0升级到4.0.0.1的错误

1 个答案: