tabControl1_SelectedIndexChanged doesn't work

tabControl1_SelectedIndexChanged doesn't work

References

Reference NO 1

http://stackoverflow.com/questions/15059550/tabcontrol-tabpage-avoid-switch-statement

Reference NO 2

http://social.msdn.microsoft.com/Forums/en-US/a541e07a-6928-4bf8-82a5-31cb991f3849/action?threadDisplayName=setting-focus-to-textbox-on-a-tab-control

Reference NO 3

http://www.tek-tips.com/viewthread.cfm?qid=926566

Reference NO 4

http://www.dreamincode.net/forums/topic/70491-how-to-make-a-tabbed-webbrowser/page__st__15

Reference NO 5

http://www.daniweb.com/software-development/vbnet/threads/380135/updating-url-when-switching-tabs

Reference NO 6

http://dotspatial.codeplex.com/discussions/403647

Reference NO 7

http://www.vbforums.com/showthread.php?671518-TabControl-Focus-issue

Reference NO 8

http://bytes.com/topic/visual-basic-net/answers/381599-cant-set-focus-controls-tabpage