Hi Swapna,
Thank you very much for your patience.
The reported issue (i.e.,Category axis labels cannot be set to Auto) has been fixed and the fix has been included in our latest release, Essential Studio Volume 2 2011. The axis label can be set to auto by setting the property of IsAutoMajor as follows;
chart.PrimaryCategoryAxis.IsAutoMajor = true;
The Essential Studio Vol 2 2011 is available for download under the following link. Could you please make use of this and let us know if this helps you?
http://www.syncfusion.com/support/forums/general/99216/Essential-Studio-2011-Volume-2-Final-Release-v920137-available-for-downloadPlease let us know if you need any further assistance.
Regards,
Pauline Bosco