Today is damm lucky someone is set a DrawPattern and let me guess on my GalaxyTab.
After Try few times the Tablet is get Lock! Oh No!!!
And the Bad thing is i forget the Email and password for this Device.

After Doing some Research in google. Finally find a solution to solve this.

that is HardReset.

for my galaxy tab just use the follow Key

1.Press and Hold(power+vol up) to restart and Boot at Android system recovery

2.Select "wipe data/factory reset" *
-- Wait Data wipe complete.

3.Select *"wipe cache partition" *
-- Wait Cache wipe complete.

4.Select reboot system now

5.Signup the Google Account and Enjoy !