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Apparently Nullable<int> and int? are equivalent in value. Are there any reasons to choose one over the other?
Nullable<int> a = null;
int? b = null;
a == b; // this is true
No difference.
int?is just shorthand forNullable<int>, which itself is shorthand forNullable<Int32>.Compiled code will be exactly the same whichever one you choose to use.