错误运行code第一次迁移更新数据库

错误运行code第一次迁移更新数据库

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问题描述

林有我的移民麻烦,我的数据库,我似乎无法找到一个答案,我得到的误差

未找到方法:

  system.missingMethodException而'System.Data.Entity.Migrations.Builders.TableBuilder`1 System.Data.Entity.Migrations.Builders.TableBuilder`1.Index( System.Linq.Ex pressions.Ex pression`1>,布尔,布尔,System.Object的)。
   在Evento.Migrations.initialcreate.Up()
   在System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration迁移,DbMigration lastMigration)
   在System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration迁移,DbMigration lastMigration)
   在System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations,字符串targetMigrationId,字符串lastMigrationId)
   在System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations,字符串targetMigrationId,字符串lastMigrationId)
   在System.Data.Entity.Migrations.DbMigrator.UpdateInternal(字符串targetMigration)
   在System.Data.Entity.Migrations.DbMigrator.c__DisplayClassc.b__b()
   在System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(动作mustSucceedToKeepDatabase)
   在System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists(动作mustSucceedToKeepDatabase)
   在System.Data.Entity.Migrations.DbMigrator.Update(字符串targetMigration)
   在System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(字符串targetMigration)
   在System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run()
   在System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   在System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   在System.Data.Entity.Migrations.Design.ToolingFacade.Run(跑垒员亚军)
   在System.Data.Entity.Migrations.Design.ToolingFacade.Update(字符串targetMigration,布尔力)
   在System.Data.Entity.Migrations.UpdateDatabaseCommand.c__DisplayClass2.b__0()
   在System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(动作命令)
未找到方法:'System.Data.Entity.Migrations.Builders.TableBuilder`1 System.Data.Entity.Migrations.Builders.TableBuilder`1.Index(System.Linq.Ex pressions.Ex pression` 1>,布尔,布尔,System.Object的)。


解决方案

我遇到了同样的问题,这里是我如何解决它。我希望这可以帮助别人。


  1. 从我引用删除实体框架和移除了package.config文件(S)的行。

  2. 关闭Visual Studio并删除了所有的EntityFramework DLL文件在我的项目文件夹

  3. 打开Visual Studio中,然后做了清理并生成

  4. 重新安装实体框架

  5. 做了全新和重新生成

之后,这是工作。

Im having trouble with my migration to my database and i can't seem to find a answer to the error i am getting

 System.MissingMethodException: Method not found: 'System.Data.Entity.Migrations.Builders.TableBuilder`1 System.Data.Entity.Migrations.Builders.TableBuilder`1.Index(System.Linq.Expressions.Expression`1>, Boolean, Boolean, System.Object)'.
   at Evento.Migrations.initialcreate.Up()
   at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
   at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
   at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
   at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
   at System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration)
   at System.Data.Entity.Migrations.DbMigrator.c__DisplayClassc.b__b()
   at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
   at System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
   at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
   at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration)
   at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run()
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Update(String targetMigration, Boolean force)
   at System.Data.Entity.Migrations.UpdateDatabaseCommand.c__DisplayClass2.b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
Method not found: 'System.Data.Entity.Migrations.Builders.TableBuilder`1 System.Data.Entity.Migrations.Builders.TableBuilder`1.Index(System.Linq.Expressions.Expression`1>, Boolean, Boolean, System.Object)'. 
解决方案

I ran into this same issue and here is how I resolved it. I hope this helps someone else.

  1. I deleted Entity Framework from my References and removed the lines from my package.config file(s).
  2. Closed Visual Studio and deleted all the EntityFramework DLL files in my project folders
  3. Opened Visual Studio, then did a Clean and Build
  4. Re-install Entity Framework
  5. Did a Clean and Build again

After that, it was working.

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08-29 20:06