Winforms Binding a ComboBox SelectedItem to an Object Property

Question

I have two simple classes:

public class Customer
{
    public String CustomerID { get; set; }
    public String Forename { get; set; }
    public String Surn         


        

Answer 1

Your code will update a property of the bounded object, but only after ComboBox loses focus.

If you want to update the property straight after the SelectedItem changed, the fastest approach will be to send a message about changes manually.
In a ComboBox, when the SelectedItemchanges, it will fire the SelectionChangesCommitted event.

You can create an event handler to take care of the change and manually call the binding:

private void combobox1_SelectionChangesCommitted(Object sender, EventArgs e)
{
    ((ComboBox)sender).DataBindings["SelectedItem"].WriteValue();
}

You could also use the ComboBox.ValueMember property and bind your object property to the SelectedValue.