Select DataGridViewCombobox cell value at runtime

You should listen to the DataGridView.EditingControlShowing event. e.Control can be casted to a ComboBox control:

this.myCachedComboBox = (ComboBox) e.Control;

In the CellEndEdit event, you should reset your variable:

this.myCachedComboBox = null;

Hope this helps,

Hi Kartheesh,

// Create ComboBox Column in DataGridView
DataGridViewComboBoxColumn dgvcmb=new DataGridViewComboBoxColumn();
dgvcmb.DisplayMember = "Name";
dgvcmb.ValueMember= "Id";
dgvcmb.DataSource= dtData.Copy();
dataGridView1.Controls.Add(dgvcmb);

// Get Selected Value from that ComboBox
private void dataGridView1_EditingControlShowing(object sender,
  DataGridViewEditingControlShowingEventArgs e)
  {
  if (dataGridView1.CurrentCell.ColumnIndex >= 0)
  {    
      ComboBox cmbBox= e.Control as ComboBox;
      cmbBox.SelectedIndexChanged += new EventHandler(comboBox_SelectedIndexChanged);
 }
  }

  void comboBox_SelectedIndexChanged(object sender, EventArgs e)
  {
   if(((ComboBox)sender).SelectedValue != null)
   {
    string sId =((ComboBox)sender).SelectedValue.ToString(); 
    string sName =((ComboBox)sender).Text.ToString();
   }
  }

Refer this code,its will helpful to you.

Cheers :)

On the onload event, get the values from the database. Assign the value directly to the datagridviewcell (assuming it's not databound). If it's one of the values you specified at design time, it should automatically adjust the selection.

If granted or denied is represented as 'G' and 'D' in the database. Then cast the datagridviewcell into a datagridviewcombobox and change the selected index accordingly.