Dropdownlist with datasource set and empty value?

Question

Is there a quick way to add a blank value to a drop down list for a winforms application? Some of my dropdowns are bound to lists of objects and some are bound to datarows from a datatable. Since I am setting the datasource property, I can't just add one through code. Is there any quick way of getting a blank value added or will I have to do it manually for each drop down?

Answer 1

You could add a DataRow with empty values to your datatable programatically,

Answer 2

Here's one I've used to do a blank entry before enum values. Obviously this won't work for more complex binding scenarios.

combo1.DataSource = (new object[] { null }
                        .Concat(Enum.GetValues(typeof(myEnumType)).Cast<object>()))
                            .ToList();