I want to display the data of a single table into single datagridview but different conditions

Hi all,

 Good Day!  I am using C# in Visual Studio 2008. I want to display the data of a single table into single datagridview but different conditions. 

And my code is below. Please help me to solve this problem.

for (int i = 0; i < 9; i++)  // 9 tab pages
{
                    ID = Convert.ToInt32(Math.Pow(2, i));
                    cmd = new SqlCommand("Select fldMmsg from tmessage_temp where fldTo=" + ID + "", cn);

                    cmd.CommandType = CommandType.Text;


                    switch (ID)
                    {
                        case 1:
                            SqlDataAdapter sdr = new SqlDataAdapter(cmd);
                            DataTable dt = new DataTable();
                            sdr.Fill(dt);
                            rdr = cmd.ExecuteReader();
                            while (rdr.Read())
                            {
                                //dataGridView1.Columns[0].Name = "fldMmsg";
                                //dataGridView1.Columns[0].HeaderText = "fldMmsg";
                                //dataGridView1.Columns[0].DataPropertyName = "fldMmsg";
                                dataGridView1.DataSource = dt;
                                dataGridView1.Refresh();

                            }

                            MessageBox.Show("one");
                            rdr.Close();
                            break;

                        case 2:
                            SqlDataAdapter sdr1 = new SqlDataAdapter(cmd);
                            DataTable dt1 = new DataTable();
                            sdr1.Fill(dt1);
                            rdr = cmd.ExecuteReader();
                            while (rdr.Read())
                            {
                                dataGridView1.DataSource = dt1;


                                //dataGridView1.Refresh();

                            }
                            rdr.Close();

                            break;


                    }
}

Thanks & Regards Sasi ................. Go Green