asp.net image upload

i want to upload images of customer in my web application. is there any naming convention should i follow to na开发者_StackOverflowme the files(e.g; i can store cust_id.jpg or cust_name.jpg). which is better ?

If each customer is to be permitted no more than one image then it would make sense intuitively to use whatever unique identifier the system otherwise uses for that customer, be it a name or a friendly ID or a GUID. That way it's more immediately recognizable for its relation to the customer data.