Der Name viewbag existiert nicht im aktuellen Kontext mvc 5

Question

Hallo Ich bin mit Visual Studio Professional 2015 und habe ich ein mvc 5 Projekt, aber ich habe 3 Fehler:

• der Namen ‚viewbag‘ tun nicht im aktuellen Kontext existiert
• der Name ‚existiert Renderbody'does nicht im aktuellen Kontext
• der Name‚RenderSection‘im aktuellen Kontext nicht existiert

I mvc 5 verwenden, suchte ich online und gefunden ma ny Lösungen, aber sie sind nicht für meinen Fall.

Das sind die \ Views \ 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=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> 
     <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" /> 
     <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" /> 
    </sectionGroup> 
    </configSections> 

    <system.web.webPages.razor> 
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> 
    <pages pageBaseType="System.Web.Mvc.WebViewPage"> 
     <namespaces> 
     <add namespace="System.Web.Mvc" /> 
     <add namespace="System.Web.Mvc.Ajax" /> 
     <add namespace="System.Web.Mvc.Html" /> 
     <add namespace="System.Web.Optimization"/> 
     <add namespace="System.Web.Routing" /> 

     <add namespace="TLN" /> 
     </namespaces> 
    </pages> 
    </system.web.webPages.razor> 

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

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

    <system.web> 
    <compilation> 
     <assemblies> 
     <add assembly="System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> 

     </assemblies> 
    </compilation> 
    </system.web> 
</configuration> 

Dies ist die \ 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=301880 
    --> 
<configuration> 
    <appSettings> 
    <add key="webpages:Version" value="3.0.0.0"/> 
    <add key="webpages:Enabled" value="false"/> 
    <add key="ClientValidationEnabled" value="true"/> 
    <add key="UnobtrusiveJavaScriptEnabled" value="true"/> 
    </appSettings> 
    <system.web> 
    <compilation debug="true" targetFramework="4.5.2"/> 
    <httpRuntime targetFramework="4.5.2"/> 
    </system.web> 
    <runtime> 
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> 
     <dependentAssembly> 
     <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed"/> 
     <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35"/> 
     <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0"/> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35"/> 
     <bindingRedirect oldVersion="1.0.0.0-1.5.2.14234" newVersion="1.5.2.14234"/> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35"/> 
     <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0"/> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35"/> 
     <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0"/> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35"/> 
     <bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0"/> 
     </dependentAssembly> 
    </assemblyBinding> 
    </runtime> 
    <system.codedom> 
    <compilers> 
     <compiler language="c#;cs;csharp" extension=".cs" 
     type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" 
     warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701"/> 
     <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" 
     type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" 
     warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/> 
    </compilers> 
    </system.codedom> 
</configuration> 

und Dies ist der _ViewStart.cshtml

<!DOCTYPE html> 
<html> 
<head> 
    <meta charset="utf-8" /> 
    <meta name="viewport" content="width=device-width, initial-scale=1.0"> 
    <title>@ViewBag.Title - Contoso University</title> 
    @Styles.Render("~/Content/css") 
    @Scripts.Render("~/bundles/modernizr") 
</head> 
<body> 
    <div class="navbar navbar-inverse navbar-fixed-top"> 
     <div class="navbar-inner"> 
      <div class="container"> 
       <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> 
        <span class="icon-bar"></span> 
        <span class="icon-bar"></span> 
        <span class="icon-bar"></span> 
       </button> 
       @Html.ActionLink("Contoso University", "Index", "Home", new { area = "" }, new { @class = "navbar-brand" }) 
       <div class="nav-collapse collapse"> 
        <ul class="nav"> 
         <li>@Html.ActionLink("Home", "Index", "Home")</li> 
         <li>@Html.ActionLink("About", "About", "Home")</li> 
         <li>@Html.ActionLink("Students", "Index", "Student")</li> 
         <li>@Html.ActionLink("Courses", "Index", "Course")</li> 
         <li>@Html.ActionLink("Instructors", "Index", "Instructor")</li> 
         <li>@Html.ActionLink("Departments", "Index", "Department")</li> 
        </ul> 
       </div> 
      </div> 
     </div> 
    </div> 

    <div class="container"> 
     @RenderBody() 
     <hr /> 
     <footer> 
      <p>&copy; @DateTime.Now.Year - Contoso University</p> 
     </footer> 
    </div> 

    @Scripts.Render("~/bundles/jquery") 
    @Scripts.Render("~/bundles/bootstrap") 
    @RenderSection("scripts", required: false) 
</body> 
</html> 

Wer weiß, Was ist der Fehler in diesem Fall?

Answer 1

Zunächst sollte die _ViewStart.cshtml Datei enthalten Ihre .cshtml Layout-Datei verweist auf Markup aller .cshtml-Ansichten.

_ViewStart.cshtml

@{ 
    Layout = "~/Views/Shared/_Layout.cshtml"; 
} 

_Layout.cshtml

<!DOCTYPE html> 
<html> 
<head> 
... 
    <title>@ViewBag.Title</title> 
</head> 
<body> 
    @* this method below should be exist in your body tag *@ 
    @RenderBody() 

    @RenderSection(...) 
</body> 
</html> 

Danach können Sie ViewBag.Title auf Ansichtsseiten, die über die benutzerdefinierte Layout verwenden:

View.cshtml

@{ 
    ViewBag.Title = "Page Title"; 
    Layout = "~/Views/Shared/_Layout.cshtml"; 
}