DropDownList with default values

[Oleg Ogurok]

Hi all,

I'm trying to extend DropDownList ASP.NET control to list US states. What's
the best place to override and fill the Items collection?
I understand Items is of type ListItemCollection, which implements
IStateManager; therefore I only need to populate the collection once. What's
the C#/VB statement to check if this is the first time?

Thanks,

-Oleg.

 

[Brock Allen]

you should put this in Page_Load and only fill it if (!IsPostBack)

 

[Oleg Ogurok]

Perhaps you didn't read my message carefully enough.
I am extending DropDownList class to make it reusable rather than populating
the Items collection in every CodeBehind.

-Oleg.

 

[Brock Allen]

Sure, so populate the data in the Load event. It's the same as the Page_Load
event. In fact the page's load gets the load event by inheriting from the
control base class. So any custom control can handle any of those events.
In terms of how you handle those events, you can either wire up an event
handler yourself or you can override the OnLoad method.

I hope this did answer your question