private void GenerateComboBox(int i)
      {
          try
          {
              //Anhand des i-Variablen weiss ich welche Control ausgewählt soll
              if (i == 123)
              {
                  cmb1 = new ComboBox();
                  cmb1.Dock = DockStyle.Fill;
                  cmb1.Name = "CMB1";
                  cmb1.Items.Add("0");
                  cmb1.Items.Add("1");
                  cmb1.Items.Add("2");
                  cmb1.Width = dataGridView1.Columns[3].Width;
                  if (!dataGridView1.EditingPanel.Controls.ContainsKey(cmb1.Name))
                      dataGridView1.EditingPanel.Controls.Add(cmb1);
                  cmb1.TextChanged += new EventHandler(cmb1_TextChanged);
                  cmb1.BringToFront();
              }
              else if (i == 124)
              {
                  cmb2 = new ComboBox();
                  cmb2.Dock = DockStyle.Fill;
                  cmb2.Name = "CMB2";
                  cmb2.Items.Add("EINS");
                  cmb2.Items.Add("ZWEI");
                  cmb2.Items.Add("DREI");
                  cmb2.Items.Add("VIER");
                  cmb2.Width = dataGridView1.Columns[3].Width;
                  if (!dataGridView1.EditingPanel.Controls.ContainsKey(cmb2.Name))
                      dataGridView1.EditingPanel.Controls.Add(cmb2);
                  cmb2.TextChanged += new EventHandler(cmb2_TextChanged);
                  cmb2.BringToFront();
              }
                        
         
          }
          catch(Exception ex)
          {
              System.Diagnostics.Debug.Write(ex.Message);
          }
      }

// this.oData is the DataTable that you are "viewing" in your Grid. It contains the column
// "mycodecolumn" which you wish to display as a ComboBox.

this.dataGridView1.DataBind(this.oData);
// this.oCodes is the DataSource of your Combo (a DataTable or a DataView), containing
//    the following two columns in it
// "description" is the DisplayMember
// "code" is the ValueMember 
this.dataGridView1.AddColumn("code", "Code", BBGridColumnTypes.ComboBox, this.oCodes, "description", "code");
this.dataGridView1.AddColumn("OtherStuff", "Other Stuff", BBGridColumnTypes.Standard);
this.dataGridView1.AddColumn("column5", "Another One", BBGridColumnTypes.Standard);

 
private BBComboBox oControl;


 #region Constructor

 public BBGridViewComboColumn()
  : base(new BBGridViewComboCell())
 {
  // used to set up the formatting
  oControl = new BBComboBox();
 }

 #endregion

        private void dataGridView1_DataError(object sender, DataGridViewDataErrorEventArgs e)
        {
            if (e.Context == DataGridViewDataErrorContexts.Formatting)
            {
                e.ThrowException = false;
            }
            if (e.Context == DataGridViewDataErrorContexts.PreferredSize)
            {
                e.ThrowException = false;
            }
        }