MVC DAL邦定下拉
public List<Drop> Select()
{
string sql = "select * from StuClass";
DataTable dt = DbHelperSQL.ExecuteDataTable(DbHelperSQL.ConnB2c, CommandType.Text, sql);
List<Drop> sel = JsonConvert.DeserializeObject<List<Drop>>(JsonConvert.SerializeObject(dt));
return sel;
}