Entityframeowrk6连接Mysql,mariadb

参考：https://stackoverflow.com/questions/50216643/error-attempt-by-method-x-set-dbconnectionsystem-data-common-dbconnection-to

一些工具下载参考：https://stackoverflow.com/questions/15142841/no-entity-framework-provider-found-for-mysql-data-mysqlclient-ado-net-provider/19898907#19898907

网上有很多博文了，就不赘述了，只不过有一点点区别，导致我找了半天

重点就是 MySql.Data.Entity 迁移到了 MySql.Data.EntityFramework

引用后，自动在entityFramework.providers节点下增加

<provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" />

system.data.DbProviderFactories 节点下增加 

<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory,MySql.Data" />

连接字符串：

<add name="xxxContext" providerName="MySql.Data.MySqlClient" connectionString="server=localhost;port=3306;database=xxx;uid=root;password=123" />