How to Add new Item into DropDownList after DataBind with Database ?

[Kylin]

Now,the dropdownlist is binded with a DataSet object,
go on ,
I want to add a new item into DropDownList,
and let the new item in the first Postion,

like this:

-- All items -- //which I add
kjkljljljlk //which come from datset
jkjljl
jkjkljl
jkljljl
jkljasle

any help ?

 

[TJS]

example code:
.....
EventList.DataSource = dtrList
EventList.DataTextField = ("EventName")
EventList.DataValueField = ("EventID")
EventList.DataBind()

' insert an item at the beginning of the list
'----------------------------------------------------
Dim NewItem As ListItem
EventList.Items.Insert(0, New ListItem("-- All Events --","-1"))

......