c#使用存储过程返回数据集(SqlCommand->DataSet)

 使用存储过程返回一个数据集，SqlCommand -〉SqlDataAdapter -〉DataSet

         SqlConnection userConnection = Connection.getConnection();
         SqlCommand userCommand = new SqlCommand("storepname", userConnection);
         userCommand.CommandType = CommandType.StoredProcedure;//采用存储过程
         userCommand.Parameters.Add("@pa", SqlDbType.VarChar, 50);//存储过程参数
         userCommand.Parameters["@pa"].Value = pa;//给参数赋值
         userCommand.Connection.Open();
         SqlDataAdapter adapter = new SqlDataAdapter(userCommand);
         DataSet ds = new DataSet();
         adapter.Fill(ds);