Many ASP.NET controls killing my CPU

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From: Carlos (crubalcava_at_REMOVETHIS.hotmail.com)
Date: 04/08/04 

Date: Thu, 8 Apr 2004 10:41:07 -0700

Has anyone come accross something like this?
On an aspx page with a "large" Databound datagrid (over 500 rows, 5 columns) the CPU utilization on the server goes to 100% when processing the page. The grid is databound to a custom business object collection that ultimately inherits from CollectionBase and implements some of IBindingList (except for sorting and that kind of thing). Sometimes it goes so far as to reset the ASP.NET worker process due to too much memory consumption. Paging the DataGrid doesn't help.

At first I thought there was a problem with my collections... or maybe the datagrid control.

But then I did another page where I dinamically have to build a tree of controls (again, a little over 500), each control is a custom composite control and represents a node in the tree. Each time the page is loaded (rendered?) the CPU also goes to 100%. If it is loaded frequently enough the ASPNET worker process resets due to "unexpected error", which I am guessing is due to a StackOverflowException in mscorlib.dll (one time that I was debugging I managed to trap this error)

Any suggestions as to why this is happening or how it could be resolved?

Many, many thanks in advance,
Carlos

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