添加
charset=utf8到Entity framework的连接字符串中
这是一个工作添加节点：
<add name="photostorageEntities" connectionString="metadata=res:/Models.Photos.ssdl|res://*/Models.Photos.msl;provider=MySql.Data.MySqlClient;provider connection string="server=ServerIP;User Id=UID;password=PASS;Persist Security Info=True;database=photostorage; Charset=utf8"" providerName="System.Data.EntityClient" />
