Covariance and contravariance in c#

Question

what is mean by covariance and contravariance in c# with simple program?

Lakshmanan Sethu · Answer

Hi Govinda Please refer the link http://msdn.microsoft.com/en-IN/library/ee207183.aspx

Ashok Patel · Answer

http://msdn.microsoft.com/en-IN/library/ee207183.aspx

Anupam Singh · Answer

It is a mechanism for implicit reference conversion. Read a nice article here : http://www.c-sharpcorner.com/UploadFile/hasansheik/covariance-and-contravariance-in-C-Sharp/