im using a winform app to build a custom xml file with certin fields

here's my problam in my Customers table i have CustomerPhoto field of type image

1. once i have the data i need from the sql what do i do with it ?

as far as search goes a i know i need to use WriteBase64 but how? -.- cant find any good examples for beginners such as me :P.

p.s  - i want to be able to read that binary data later using c# to display the actual image !

1. how do i even retrieve it (the image data type) ? do i write a function that returns a binary type?