Hi, I'm currently in the process of evaluating the RadControls to see if it meets our needs for a project we're working on.
I have a RadComboBox that is created at runtime and added (via a Template) to a cell in the RadGrid.
Currently, at runtime I set:
|combo.OnClientDropDownOpening = "OnClientDropDownOpening";
which fires the:
| function OnClientDropDownOpening(sender, args)
How do I go about initiating a server callback that passes back the current control and its value, performs a custom query based on that value, and populates the Item collection of the RadComboBox without posting back the entire page?
I've explored the RadComboBox.EnableLoadOnDemand property, but it appears that it makes callbacks when the text is changed, which is not what we want.
If there are alternative methods to handling the event client-side, I'm open to them.