Because parameter names could be changed during refactoring, they should not be spelled out literally in strings. Instead, use ``++nameof()++``, and the string that's output will always be correct.
This rule raises an issue when a string in the ``++throw++`` statement contains the name of one of the method parameters.
throw new ArgumentException("Bad argument", "someParameter"); // Noncompliant
}
if (anotherParam == null)
{
throw new Exception("anotherParam should not be null"); // Noncompliant
}
}
----
=== Compliant solution
[source,csharp]
----
void DoSomething(int someParameter)
{
if (someParameter < 0)
{
throw new ArgumentException("Bad argument", nameof(someParameter));
}
if (anotherParam == null)
{
throw new Exception($"{nameof(anotherParam)} should not be null");
}
}
----
=== Exceptions
* The rule doesn't raise any issue when using C# < 6.0.
* When the parameter name is contained in a sentence inside the ``++throw++`` statement string, the rule will raise an issue only if the parameter name is at least 5 characters long. This is to avoid false positives.
