EFCore MySQL System.TypeLoadException occurred 问题解决

　　今天在使用 EFCore + MySQL 搭一个小Demo的时候,在 Migration 环节遇到了这样一个问题。

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.

几经排查无果之后求助了Google，发现了一条状况相同的 Issue
项目作者的回复如下

　　@lixiandai Hi, yes, this is frustrating - Oracle’s MySQL does not yet fully support .NET Core 2.

　　In the interim, I suggest using Pomelo, which can be installed by executing the following command:

　　$ dotnet add package Pomelo.EntityFrameworkCore.MySql –version 2.0.0-rtm-10062
Or, add the following line to your .csproj ItemGroup

　　

　　所以其实是MySQL的官方驱动包的锅喽?

　　按照作者的推荐选择了一位国内大佬的项目Pomelo.EntityFrameworkCore.MySql，成功解决问题。