Hi Venkat,
Thank you for your interest in Syncfusion Products.
I am able to reproduce this issue. This issue is suspected to be a defect and we have sent this to our development team for more analysis. We will update you on this issue on or before 17th October 2008.
But as a workaround you can use below code to solve this issue:
[C#]
this.TabStrip1.Items[1].Selected = true;
this.TabStrip1.Items[0].Selected = false;
this.MultiPage1.GoNext();
Please refer the sample in the below link which illustrates the above:
http://websamples.syncfusion.com/samples/Tools.Web/6.4.0.3/F77081/main.htmPlease try this and let me know if this helps.
Thanks,
Melba