I have a number of pages that use UltraWebGrid with in grid editing. I am trying to find out what page event (if any) occurs before the grids request data but after the page state has been reloaded. On first request the Page_Load seems to be called before the grid_initializedatasource but on postback the grid_initializedatasource is called before the page_load. I tried tapping in the page_initcomplete and page_preload events but those also occur after the grid_initializedatasource. I have a basepage that all my webforms inherit from and I want to create a method in the base page that either captures a businessobject from sessionstate or restores one from an id on a hiddenfield on the page prior to the grids initializedatasource events.
Hello,
The best page to get started with that is here - this great blog post called "Demystifying WebGrid DataBinding" - plenty of useful information there
http://blogs.infragistics.com/blogs/tony_lombardo/archive/2008/01/29/demystifying-infragistics-webgrid-databinding.aspx
You may also find the following ASP.NET page lifecycle MSDN article useful as well (which event gets fired when)
http://msdn.microsoft.com/en-us/library/ms178472.aspx
As far as InitializeDataSource is concerned - yes, this event is called automatically whenever the grid needs data (before displaying, after postback to restore the state, on sorting, etc, etc) - so there is no fixed place in the ASP.NET page lifecycle where it is called. In most of the cases this is exactly what you need, but yes - if you do need better control on that, you may need to databind not in InitializeDataSource, but elsewhere - depending on the logic.
OK thank you. I am familiar with both documents you mentioned but was looking for some place in the page lifecycle that I could tie into after the viewstate was restored but before the grid initializedatasource events, sounds like that does not really exist.