Hi,

We have a custom control which contains a number of dropdownlists. Within 
the custom control class we have a handler for the SelectedIndexChanged 
event. This event fires when the user selects an item from the dropdownlist, 
but it's not firing when we change the selected value in the custom 
control's properties. It changes the selected value successfully, but no 
event is fired.

In addition to this, changing the selection in one dropdownlist causes the 
available selections in the other dropdownlist to change. This is working 
successfully, however, when I attempt to access the new list, I'm unable to 
because it's still holding the old values.

Can anybody tell me what I might be doing wrong. Unfortunately I can't 
provide any code snippets because I'm writing this post from home

Thanks

Hi,

that's by design if I understand your description correctly. ASP.NEt throws 
events only based on user interaction, e.g when user has changed the 
selection on the browser e.g at client. But if you change it 
programmatically (in server-side code), no event is fired.

It's explained in

ASP.NET Web Server Control Event Model
http://msdn2.microsoft.com/en-us/library/y3bwdsh3.aspx


-- 
Teemu Keiski
AspInsider, ASP.NET MVP
http://blogs.aspadvice.com/joteke
http://teemukeiski.net


"Rob"  wrote in message 
news:uSxG5K10HHA.6072@TK2MSFTNGP03.phx.gbl...

> Hi,
>
> We have a custom control which contains a number of dropdownlists. Within 
> the custom control class we have a handler for the SelectedIndexChanged 
> event. This event fires when the user selects an item from the 
> dropdownlist, but it's not firing when we change the selected value in the 
> custom control's properties. It changes the selected value successfully, 
> but no event is fired.
>
> In addition to this, changing the selection in one dropdownlist causes the 
> available selections in the other dropdownlist to change. This is working 
> successfully, however, when I attempt to access the new list, I'm unable 
> to because it's still holding the old values.
>
> Can anybody tell me what I might be doing wrong. Unfortunately I can't 
> provide any code snippets because I'm writing this post from home
>
> Thanks
>
>