how to create a pdf using crystal reports with password?

Question

Dear all,

 

 

in c# windows application iam using crystal reports to genarate pdf via binding data from database 

here a small problem 

i want to ganarate pdf using crystal report with a password 

i mean iam genarating a payslip for an employee the password should be employee id 

 user try to open the file that will ask for password he will enter employeeid then only it will open 

other wise not open 

 

give me suggessions please