Why are entity framework entities partial classes?

Question

I recently began using entity framework, and I noticed that generated entities are partial classes. What are the uses of that? I googled a bit and people mostly speak of validat

Answer 1

partial is added to generated entities for customization.

In situations when you wish to add your own methods to classes produced by code generators, including EF, it is a good idea to put your implementation in a separate file, so that you wouldn't run the risk of losing your customizations each time the code is re-generated.

Without partial developers wishing to customize the class would have to use work-around techniques, such as applying Generation Gap design pattern.