c# - Concise way of checking if one of two values is null while the other isn't -


sometimes need verify out of 2 values, 1 is null while other isn't. works:

(a != null && b == null) || (a == null && b != null)

but becomes cluttered when variable names longer, nested properties on object. creating helper function option this, there more concise syntax writing inline?

try this:

(a == null) != (b == null)

note if operator == overriden class, can have problem. following not use operator ==

object.referenceequals(a, null) == object.referenceequals(b, null)

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