Question

如何在Visual Studio 2012中的WebForms网站项目（而非Web应用程序项目）中启用实体框架？

编辑1：我正在使用Framework 4.0。我已使用程序包管理器控制台安装了Entity Framework 5.0。在程序包管理器控制台中执行启用迁移时，它会抛出并发生错误。

PM> enable-migrations
System.ArgumentException: The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))

Server stack trace: 
   at EnvDTE.Properties.Item(Object index)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at EnvDTE.Properties.Item(Object index)
   at System.Data.Entity.Migrations.Extensions.ProjectExtensions.GetPropertyValue[T](Project project, String propertyName)
   at System.Data.Entity.Migrations.MigrationsDomainCommand.GetFacade(String configurationTypeName)
   at System.Data.Entity.Migrations.EnableMigrationsCommand.FindContextToEnable(String contextTypeName)
   at System.Data.Entity.Migrations.EnableMigrationsCommand.<>c__DisplayClass2.<.ctor>b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))

Answer 1

请检查您是否安装了实体框架。如果没有请在NuGet上获得EF Runtime

检查Nuget和Sample Application

的这些链接

如何在ASP.NET WebForms网站项目中启用实体框架

1 个答案: