Nima.naqipoor wrote:How can I limit another one , not to be able to copy the exe file?
Delete the file :).
You can probably move this file to a folder that can only be accessed by you - either by using Windows access permissions or by using a "folder password" program.
You can use a licensing key mechanism within your code to allow only those knowing the key to execute it. If you search on the internet you may find some sites which will help you create and validate against a license.