Hi,

I am using column grouping functionality of xamGrid, which in the worst case may have upto 3 group columns and around 400 columns at the lowest level (4 column headers in total) . The issue is xamGrid performance degrades significantly as you increase the no. of group column. It works just fine when there are 2 group columns but with 3 group and 25 columns it becomes unresponsive and doesn't allow you to click inside or move the scrollbar.

In debugger when I break the execution I can see the Infragistics code(mostly the call to MeasureOverride or ArrangeLayout) at the top of the call stack. Thus it is the xamGrid code alone responsible for poor performance.

I have also attached an isolated project which illustrates this issue. I have tried running the project with the latest release(13.2) of NetAdvantage which didn't improve the performance either. I tried service release 2036 as well but no luck.

Can anyone suggest how I can optimize this or if there is a a fix out there that I am not aware of.

Abdullah Atta