Detailed article on the OOPS - Object oriented principle of SOLID

SOLID stands for

• S - Acronym for SRP.
• O - Acronym for OCP.
• L - Acronym for LSP.
• I - Acronym for ISP.
• D - Acronym for DIP 

URL : 

http://www.c-sharpcorner.com/UploadFile/akkiraju/s-o-l-i-d-design-principles-explained-part-1/