Bhaiyon meray paas ek excel ki file hai jisay mein copy protect karna chahta hoon. jaisay agar mein woh file kisi ko doon to woh aagay kisi aur ko na de sakay ya phir koi aur usay open hi nahi kar sakay jab tak k mein allow na karon.

mujhe software to milay hein is cheez k jaisay (lockxls) k naam se ek software hai magar woh trial version hai.agar kisi ko pata hai to please share karein