Nullable double NaN comparison in C#

Question

I have 2 nullable doubles, an expected value and an actual value (let\'s call them value and valueExpected). A percentage is found using 100 * (value / valueExpected). Howev

Answer 1

You can also use

if (!Double.IsNaN(myDouble ?? 0.0))

The value in the inner-most parenthesis is either the myDouble (with its Nullable<> wrapping removed) if that is non-null, or just 0.0 if myDouble is null. Se ?? Operator (C#).