Question

我正在尝试使用Entity Framework使.NET Core 2.0控制台应用程序与MySQL数据库一起工作。

我已经尝试了Oracle（https://www.nuget.org/packages/MySql.Data.EntityFrameworkCore/）和Pomelo（https://www.nuget.org/packages/Pomelo.EntityFrameworkCore.MySql）连接器，并且它们都抛出了TypeLoadException：

Oracle例外：

tdsum[ntr] = element.childElementCount;

柚子例外：

System.TypeLoadException occurred
  HResult=0x80131522
  Message=Method 'Clone' in type 'MySQL.Data.EntityFrameworkCore.Infraestructure.Internal.MySQLOptionsExtension' from assembly 'MySql.Data.EntityFrameworkCore, Version=8.0.8.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' does not have an implementation.
  Source=<Cannot evaluate the exception source>
  StackTrace:
   at MySQL.Data.EntityFrameworkCore.Extensions.MySQLDbContextOptionsExtensions.UseMySQL(DbContextOptionsBuilder optionsBuilder, String connectionString, Action`1 MySQLOptionsAction)
   at Common.DAL.MyContext.OnConfiguring(DbContextOptionsBuilder optionsBuilder) in Program.cs:line 18
   at Microsoft.EntityFrameworkCore.DbContext.get_InternalServiceProvider()
   at Microsoft.EntityFrameworkCore.DbContext.get_DbContextDependencies()
   at Microsoft.EntityFrameworkCore.DbContext.get_Model()
   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityType()
   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityQueryable()
   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.System.Linq.IQueryable.get_Provider()
   at System.Linq.Queryable.Where[TSource](IQueryable`1 source, Expression`1 predicate)
...

.NET Core MySql TypeLoadException - 方法克隆

0 个答案: