== Why is this an issue? 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 [source,csharp] ---- 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(nameof(c)); // Noncompliant throw new ArgumentNullException("My error message", "a"); // Noncompliant throw new ArgumentOutOfRangeException("c"); // Noncompliant throw new ArgumentOutOfRangeException("c", "My error message"); // Noncompliant throw new ArgumentOutOfRangeException("c", b, "My error message"); // Noncompliant throw new DuplicateWaitObjectException("c", "My error message"); // Noncompliant } ---- === Compliant solution [source,csharp] ---- public void Foo(Bar a, int[] 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("a", "My error message"); throw new ArgumentOutOfRangeException("b"); throw new ArgumentOutOfRangeException("b", "My error message"); throw new ArgumentOutOfRangeException("b", b, "My error message"); throw new DuplicateWaitObjectException("b", "My error message"); } ---- === Exceptions The rule won't raise an issue if the parameter name is not a constant value. ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) === Message * Use a constructor overload that allows a more meaningful exception message to be provided. * The parameter name '{0}' is not declared in the argument list. * ArgumentException constructor arguments have been inverted. === Highlighting The string literal supposed to be the parameter name endif::env-github,rspecator-view[]