Exclusive access could not be obtained because the database is in use SQl 2005

If you get the error:
Exclusive access could not be obtained because the database is in use:

It is because when you restore the a database you should have Exclusive lock, you can kill the process which are using database. otherwise use the command showed below.

  
--
-- This should give you Exculusive lock
--
  
USE MASTER

ALTER DATABASE  MyDatabase   SET SINGLE_USER WITH ROLLBACK IMMEDIATE;

-- Do your work

-- Reenable the database
ALTER DATABASE MyDatabase SET MULTI_USER WITH ROLLBACK IMMEDIATE;

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