yes offcourse bcz its running fine on my system , error occure in other computer when i running the exe of the project , error just occure in particular form others are working fine may dll not getting its path , i dont understand how can i know what is the source of error Love is Life & Life is Love!

I have already explained why it doesn't work, and I am not the only one who has done that. Don't repost the same question. That way it seem like you are simply ignoring the people who tries to help you. In the long run you will just end up being ignored by everyone. Despite everything, the person most likely to be fooling you next is yourself.

Well I guess a simple solution to the problem would be to declare a public event (say OnEditFormClosing) and when you create an instance of the Form2 (the Image Edit Form), register that event (Handler of the event) in Form1 (Original Form). Now when you close Form2 (Edit Form), handle its 'Close Event' and from there Invoke the event (OnEditFormClosing), this will notify your Form1 that Form2 closed, as a result you can refresh the image in picture box may be by reloading or whatsoever procedure you adapt. Regards Muhammad Talha

Please don't be desperate. Take your time, and study the documentation for System.Diagnostics.Process. If you see 10 posts below, someone has posted code using this method to start WinRar. It is more gratifying when you find the answer yourself than when someone else does it for you. The key to knowledge is not to rely on people to teach you it.