Handle SelectedIndexChanged of a ComboBox in the DataGridView

Handle SelectedIndexChanged of a ComboBox in the DataGridView

To handle the SelectedIndexChanged event of a DataGridViewComboBox, you need to use the DataGridView.EditingControlShowing event as shown below. You can then retrieve the selected index or the selected text of the combobox.

C#

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)

        {

            ComboBox editingComboBox = (ComboBox)e.Control;

            if(editingComboBox != null)

                editingComboBox.SelectedIndexChanged += new System.EventHandler(this.editingComboBox_SelectedIndexChanged);

        }

private void editingComboBox_SelectedIndexChanged(object sender, System.EventArgs e)

        {

            ComboBox comboBox1 = (ComboBox)sender;

            // Display index

            MessageBox.Show(comboBox1.SelectedIndex.ToString());

            // Display value

            MessageBox.Show(comboBox1.Text);

        }