Some constructors of the ``++ArgumentException++``, ``++ArgumentNullException++``, ``++ArgumentOutOfRangeException++`` and ``++DuplicateWaitObjectException++`` classes must be fed with a valid parameter name. This rule raises an issue in two cases: * When this parameter name doesn't match any existing ones. * When a call is made to the default (parameterless) constructor == Noncompliant Code Example ---- public void Foo(Bar a, int[] b) { throw new ArgumentException(); // Noncompliant throw new ArgumentException("My error message", "c"); // Noncompliant throw new ArgumentException("My error message", "c", innerException); // Noncompliant throw new ArgumentNullException("c"); // Noncompliant throw new ArgumentNullException("My error message", "c"); // Noncompliant throw new ArgumentOutOfRangeException("c"); throw new ArgumentOutOfRangeException("c", "My error message"); // Noncompliant throw new ArgumentOutOfRangeException("c", b, "My error message"); // Noncompliant } ---- == Compliant Solution ---- public void Foo(Bar a, Bar b) { throw new ArgumentException("My error message", "a"); throw new ArgumentException("My error message", "b", innerException); throw new ArgumentNullException("a"); throw new ArgumentNullException(nameOf(a)); throw new ArgumentNullException("My error message", "a"); throw new ArgumentOutOfRangeException("b"); throw new ArgumentOutOfRangeException("b", "My error message"); throw new ArgumentOutOfRangeException("b", b, "My error message"); } ---- == Exceptions The rule won't raise an issue if the parameter name is not a constant value (inline declaration, nameof() or const variable).