A long parameter list can indicate that a new structure should be created to wrap the numerous parameters or that the procedure is doing too many things.

== Noncompliant Code Example

With a maximum number of 3 parameters:

[source,vbnet]
----
Public Sub Foo(ByVal p1 As Integer, ByVal p2 As Integer, ByVal p3 As Integer, ByVal p4 As Integer) ' Noncompliant
  ' ...
End Sub

Public Function Bar(ByVal p1 As Integer, ByVal p2 As Integer, ByVal p3 As Integer, ByVal p4 As Integer) ' Noncompliant
  ' ...
End Function
----

== Compliant Solution

[source,vbnet]
----
Public Sub Foo(ByVal p1 As Integer, ByVal p2 As Integer, ByVal p3 As Integer)
  ' ...
End Sub

Public Function Bar(ByVal p1 As Integer, ByVal p2 As Integer, ByVal p3 As Integer)
  ' ...
End Function
----

== Exceptions

[source,vbnet]
----
Public Class BaseClass
    Public Sub New(Param1 As Integer)
        ' ...
    End Sub
End Class

Public Class DerivedClass
    Inherits BaseClass

    Public Sub New(Param1 As Integer, Param2 As Integer, Param3 As Integer, Param4 As Integer, Param5 As Long)
        MyBase.New(Param1) ' Compliant, the parameters intended for the base class constructor do not count in the sum of the parameter list.
        ' ...
    End Sub

End Class
----

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

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

include::message.adoc[]

include::../parameters.adoc[]

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

include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]