DataTable类Clone方法与Copy方法的区别分析

        private static void Copy()
        {
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                string sql = "select * from emp";
                SqlDataAdapter da = new SqlDataAdapter(sql, conn);
                DataTable dt = new DataTable();
                da.Fill(dt);
                DataTable dtCopy = dt.Copy();
                Print(dtCopy);
            }
        }
    }