C# .NET - is it neccesary to inherit all the methods from interface to subclass

Hello All,

     In interface in am writing 3 methods i.e add,sub,multiply now i want to inherit only add and sub method in subclass,so will it effects multiply method in the interface...please let me know soon


Thanks
lata

Methods on an interface are not optional.  Your question is a little confusing as to what you are trying to accomplish and why.  Check out this old article.  It may shed some light:

https://www.nullskull.com/articles/20031103.asp