Add empty item to dropdownlist of custom objects in C#

Question

We are binding a list of custom objects to an ASP.NET DropDownList in C# but we want to allow for the DropDownList to not have anything selected initially. One way of doing

Answer 1

First:

DropDownList1.Items.Clear();

Then add listItems to the dropDownList.

This prevents the dropDownList from acquiring an ever increasing list of items every time it is rendered in a postback or asynchronous postback.