I am using the VS.NET designer with the grid, dropping the grid onto the designer and then making changes to it, but I don't always get the changes when I run the page. I can also see that when I change properties using either the VS.NET property window or the Infragistics Designer windows the page in VS.NET doesn't show the * symbol which means to me that changing the properties is not updating the properties of the grid as the page shows now changes. Let me know if I'm not explaining that well. Basically any changes I make are not working via the designer.
I also had the problem of making a change and having it not work so I then went and made the change at the source (aspx) level and the change finally worked but then caused my grid AddRow event to stop working. It's really a bummer to almost get the grid working the way I want then have the an Event just stop working for no apparent reason. I finally just deleted the grid and all the code and am now starting over to try and make this work.
what version of vs.net? what version of the datagrid?