连接数据库时加上 charset=utf8 如下:
<connectionStrings>
<add name="ClinicDB" connectionString="Data Source=localhost;User Id=root;Password=root;Database=Clinic;charset=utf8;"/>
</connectionStrings>
转载于:https://www.cnblogs.com/haorensw/archive/2012/03/24/2415691.html