Implementing an ajax tree in apex

So ajax trees. That sounds great right? To load the data on demand and not in one huge chunk? Honestly, I’ve noticed slowness/slowdown when there are even just a few hundred nodes around. And why?...

Which controls triggered the Page.IsValid = false?

Two things:Is it possible to set the Page.IsValid (Is_Valid) property through Jquery so that I dont have to use the aspx validators? It is my understanding that the IsValid property is read-only?When...

how to create and download excel document using asp.net

How to create and download excel document using asp.net ?The purpose is to use xml, linq or whatever to send an excel document to a customer via a browser.Edit : Use caseThe customer load a gridview (...