How to insert 'Empty' field in ComboBox bound to DataTable

Question

I have a combo box on a WinForms app in which an item may be selected, but it is not mandatory. I therefore need an \'Empty\' first item to indicate that no value has been s

Answer 1

I had a similar challenge. As part of the form load event I set the SelectedIndex of the control to -1

ie

private void Form1_Load(object sender, EventArgs e)
{         
    this.TableAdapter.Fill(this.dsListOfCampaigns.EvolveCampaignTargetListMasterInfo);
    this.comboCampaignID.SelectedIndex = -1;
}

Effectively, the combo box is populated and the first item is selected. Then the item is unselected. May not be a viable solution for all cases.