How can I fill a combobox cell of a datagridview in a specific row with items ?

DataGridViewComboBoxCell Cmb;
cmb.item.add("Item1");
cmb.item.add("Item2");

GRidView1(CulumnIndex,RowIndex)=cmb

data = new DataTable();

     da = new MySqlDataAdapter("SELECT * FROM cds", conn);
     cb = new MySqlCommandBuilder(da);

     da.Fill(data);

     DataGridViewComboBoxCell cbCell = (DataGridViewComboBoxCell)dataGridView1.Rows[0].Cells[1];
     foreach (DataRow row in data.Rows)
     {
       int32TextBox1.AutoCompleteCustomSource.Add(row[1].ToString()); //assuming required data is in first column
       cbCell.Items.Add(row[1].ToString());
     }