S stands for SRP (Single responsibility principle O stands for OCP (Open closed principle) L stands for LSP (Liskov substitution principle) I stands for ISP ( Interface segregation principle) D stands for DIP ( Dependency inversion principle)http://www.codeproject.com/Articles/703634/SOLID-architecture-principles-using-simple-Csharp

Refer this link - http://dotnetcodr.com/2013/08/12/solid-design-principles-in-net-the-single-responsibility-principle/

http://www.c-sharpcorner.com/UploadFile/97fc7a/s-o-l-i-d-principle-inversion-of-control-and-resolution-with/You can touch base with me on http://dotnetpiper.blogspot.in/