A helper method for binding data might be an idea here
public static void BindField(ListControl control, object dataSource,
string displayMember, string valueMember )
{
control.DataTextField = displayMember;
control.DataValueField = valueMember;
control.DataSource = dataSource;
control.DataBind();
}
You can then use as follows
BindField(YourComboBoxControl, YourDataSource, "FieldNameYouWantToDisplayInComboBox", "IdYouWantToStoreInComboBox");