Here you can find all design Patterns uses in C# and each design patterns have some principles With implementations
Here you can find the article regarding the same and some examples with explained please do like if you liked the article
SOLID Design Pattern https://blog.usejournal.com/net-design-pattern-3b747d155588
Factory Design Pattern https://medium.com/@kumarpranaw/factory-design-pattern-c-a330955b9ed6