我使用Code-First,使用标准模板创建网站,然后继续向主applicationDBContext
添加表格,但现在当我去启用 - 迁移时包管理器我得到的控制台
在程序集' DOC'中找不到上下文类型。
当我使用完整路径时:
ContextTypeName Option enable-migrations -ContextTypeName DOC.Migrations.Configuration
......我明白了:
已在项目' DOC'中启用了迁移。要覆盖现有迁移配置,请使用-Force参数。
当我走 -Force 时,它说
为项目DOC启用了代码优先迁移。
但是当我尝试添加迁移时,我得到了
错误CS0311类型' DOC.Migrations.Configuration'不能用作类型参数' TContext'通用类型或方法' DbMigrationsConfiguration'。来自' DOC.Migrations.Configuration'没有隐式参考转换。到' System.Data.Entity.DbContext'。 DOC xxxxxxx \ DOC \ Migrations \ Configuration.cs。
当我检查 Configuration.cs 文件时,它改为:
internal sealed class Configuration : DbMigrationsConfiguration
......来:
internal sealed class Configuration : DbMigrationsConfiguration
...导致项目无法构建
我管理的唯一一次将实体框架从6.1.3降级为 6.1.2 ,然后重新升级。
有时,我必须升级和降级几次,关闭VS并重新打开,然后才能正常工作。
有解决方案吗?它非常烦人。
我还注意到我的DbContext
类派生自IdentityDBContext
,这样可以吗?我知道你通常是从DbContext
派生出来的,但是自从我使用向导启动项目后,它自动创建了这个,我只是将其他表添加到了它。
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=301880
-->
<configuration>
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --><!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --></configSections>
<connectionStrings>
<add name="DefaultConnection" connectionString="data source=localhost\SQLTEST;initial catalog=DOC;User Id=xxx;Password=xxxx;multipleactiveresultsets=True;application name=EntityFramework" providerName="System.Data.SqlClient" />
<!--<add name="DefaultConnection" connectionString="data source=zzzzz;initial catalog=DOC;User Id=zzzzzz;Password=zzzzz;multipleactiveresultsets=True;application name=EntityFramework" providerName="System.Data.SqlClient" />-->
</connectionStrings>
<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>
<!--
For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
The following attributes can be set on the <httpRuntime> tag.
<system.Web>
<httpRuntime targetFramework="4.5.2" />
</system.Web>
-->
<system.web>
<authentication mode="None" />
<compilation debug="true" targetFramework="4.5.2" />
<httpRuntime targetFramework="4.5" />
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>
<modules>
<remove name="FormsAuthentication" />
</modules>
<handlers>
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<remove name="OPTIONSVerbHandler" />
<remove name="TRACEVerbHandler" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.OAuth" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
<bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
</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="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.AspNet.Identity.Core" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="EntityFramework.MappingAPI" publicKeyToken="7ee2e825d201459e" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-6.1.0.9" newVersion="6.1.0.9" />
</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>
<dependentAssembly>
<assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
答案 0 :(得分:2)
您会混淆enable-migrations
和add-migration
的参数。
enable-migrations
具有上下文类型名称。您正在指定配置名称,而不是上下文。
enable-migrations -ContextTypeName DOC.Models.ApplicationDbContext
然后添加:
add-migration MyMigrationName -ConfigurationTypeName DOC.Migrations.Configuration
我不确定你甚至需要参数,因为看起来你有一个项目。这是command reference
您从IdentityDbContext继承并不重要。此外,EF没有版本6.3和6.4,它是6.1.3或EF Core。
答案 1 :(得分:1)
答案 2 :(得分:0)
尝试创建一个新项目,只是为了检查我们需要什么。好的,你去文件&gt;新&GT;项目,在visual c#menu新的asp.net web应用程序下,选择项目的任何名称,这只是为了检查项目中缺少的内容。单击“确定”,在左侧选择“MVC”,在右侧选择缺少的步骤。您可以看到更改身份验证按钮,并在该按钮下显示身份验证:无身份验证,单击此处并选择单个用户帐户。单击“确定”和该选项,自动安装实体和标识。那就是问题所在。希望我能提供帮助,请随时与我联系。