== Why is this an issue?

There is no point in providing a default value for a parameter if callers are required to provide a value for it anyway. Thus, ``++[DefaultParameterValue]++`` should always be used in conjunction with ``++[Optional]++``.


=== Noncompliant code example

[source,csharp]
----
public void MyMethod([DefaultParameterValue(5)] int j) //Noncompliant, useless
{
  Console.WriteLine(j);
}
----


=== Compliant solution

[source,csharp]
----
public void MyMethod(int j = 5)
{
  Console.WriteLine(j);
}
----
or

[source,csharp]
----
public void MyMethod([DefaultParameterValue(5)][Optional] int j)
{
  Console.WriteLine(j);
}
----



ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

=== Message

Add the "Optional" attribute to this parameter.


=== Highlighting

``++[DefaultParameterValue(...)]++``


'''
== Comments And Links
(visible only on this page)

=== on 8 Dec 2015, 10:00:41 Tamas Vajk wrote:
\[~ann.campbell.2] LGTM

endif::env-github,rspecator-view[]