小弟我想用C#语句把下面的SQL查询结果显示在dataGridView里。该如何写？求指教

我想用C#语句把下面的SQL查询结果显示在dataGridView里。该怎么写？求指教
我想用C#语句把下面的SQL查询结果显示在dataGridView里，请教各位下面“？？？”要怎么写。先拜谢了！！


  SqlConnection conn = new SqlConnection("server=.;database=student;uid=sa;pwd=123;");
  SqlCommand cmd = new SqlCommand("select * from View_results where termNo=1",conn);
  conn.Open();
  cmd.ExecuteNonQuery();
  SqlDataAdapter sda = new SqlDataAdapter(cmd);
  sda.Fill(Class_SQL.ds,"select_results");
  if (Class_SQL.ds.Tables["select_results"].Rows.Count == 1)
  {
  ？？？
  }

[解决办法]
cmd.ExecuteNonQuery();//去掉该句

......
sda.Fill(Class_SQL.ds,"select_results");
conn.Close();
dataGridView1.DataSource=Class_SQL.ds.Tables["select_results"];//关键一句

[解决办法]
断开式链接这样些

C# code

 SqlConnection conn = new SqlConnection("server=.;database=student;uid=sa;pwd=123;");  SqlCommand cmd = new SqlCommand("select * from View_results where termNo=1",conn);  SqlDataAdapter sda = new SqlDataAdapter(cmd);  sda.Fill(Class_SQL.ds,"select_results");  if (Class_SQL.ds.Tables["select_results"].Rows.Count == 1)  {     dataGridView1.DataSource=Class_SQL.ds.Tables["select_results"].DefaultView;     //dataGridView1.DataSource=Class_SQL.ds.Tables["select_results"];          //dataGridView1.DataSource=Class_SQL.ds;  }