How to Sum Nullable property values?

Question

Hallo,

I have class object and it has some Nullable properties like ( Public property C1 as integer?, C2 as integer? ....etc) and i have a read only property like below but it does not sum when any of the property is null. What is the correct way to Sum? Thanks

Public read only property Total as integer?
Get
Return C1 + C2 + C3
End get
End property

Answer 1

Try one of solutions:

Return C1.GetValueOrDefault + C2.GetValueOrDefault + C3.GetValueOrDefault