Basically it is good to have storing the images in server and save the appropriate path in the field of the entity and while retrieving just set the path for the image control after getting it from database.
Ex :- Let say we have a image with id 'imgTest'.
string imageURL = "~/images/image.png";
imgTest.ImageUrl = imageURL;
OR
you can also directly save the image in database as
varbinary
type field.
Please see this example mentioned
here.[
^]
Hope this will definitely of help to you.