ado.net 如何将多结果集分别绑定到两个dataGridView1

private void sqlexec2()
        {
            string str = "server=.;uid=sa;pwd=ttt;database=xxxx";//连接字符串
            string sql = "select number,name,sex from mytemp where sex='男' and department='销售';select number,name,sex from mytemp where sex='女' and department='销售部';"; //两个查询语句
            SqlConnection conn = new SqlConnection(str);//连接对象
            SqlCommand comm = new SqlCommand(sql, conn);
            DataTable dt = new DataTable();
            SqlDataReader dr = null;

            conn.Open();
            dr = comm.ExecuteReader();
            dt.Load(dr);
            dataGridView1.DataSource = dt;
            dr.NextResult();
            dt.Load(dr);
            dataGridView2.DataSource = dt;
            conn.Close();
        }

结果是两个表格都显示的是前一个查询的结果
[解决办法]

引用:

DataTable dt1 = new DataTable();
            DataTable dt2 = new DataTable();

            conn.Open();
 
 
            SqlDataReader dr = comm.ExecuteReader();
            dt1.Load(dr);
            dt2.Load(dr);

            conn.Close();
            dataGridView1.DataSource = dt1;
            dataGridView2.DataSource = dt2;

为什么加载到不同的datatable就能实现？

同一个datatable 不就覆盖掉了么