I'm using Infragistics 6.3 for ASP.Net CLR1.x, Visual Studio 2003, and am currently experiencing an issue with an UltraWebGrid on an UltraWebTab. The UltraWebTab has three tabs, and each tab contains a user control. One of the user controls on one of the tabs -- Tab #2 --contains an UltraWebGrid control. If I set that tab as the default selected tab, the grid displays fine, no problem. BUT, if I set the default selected tab to the first or third tab, then click the second tab that contains the grid, no grid appears. The grid is populated (I can see it in the HTML source code, and when I debug the application, the InitializeRow methods are being called, and I've confirmed that the .visible property is set to true). I'm not showing/hiding the grid client-side (ie. grid.show(), grid.hide()), so I'm not sure what the problem is. Any ideas?
OK, I think I've solved this problem.
Setting UseFixedHeaders to false resolves the issue. It was originally set to true. Why that should affect the grid display is beyond me.