Adding a "None Selected" option to a DropDownList control that uses Databinding

[Nathan Sokalski]

I have several DropDownList controls on my page that use databinding.
However, I want to give users the option of selecting a choice such as "None
Selected" or something else that shows they did not make a selection.
However, if I attempt to add a ListItem to the Items collection when
databinding is used it is removed and replaced by the item in the
databinding source. Is there any simple way to add an extra ListItem, or do
I have to build the collection using separate code? Thanks.

 

[Brock Allen]

DropDownList.Items.Insert(0, "None Selected")

 

[Guest]

You can also use:
DropDownList.Items.Insert(0, new ListItem("-99", "None Selected"))

This allows you to control also Value of new item also with Text. It might
get handy when validating user input in postback.