Imports System
Imports System.Reflection

Public Module Example

    Sub Main()
        ' To invoke MyMethod with the default argument value, pass 
        ' Missing.Value for the optional parameter. First, get the 
        ' method.
        Dim mi As MethodInfo = _
            GetType(MissingSample).GetMethod("MyMethod")

        ' Second, create an array of parameters to pass to the method.
        ' In this case, the array contains just one element.
        Dim arguments() As Object =  { Missing.Value }

        ' Finally, invoke the method. Specify Nothing for the target
        ' object, because the method is Shared.
        mi.Invoke(Nothing, arguments)
    End Sub

End Module

' This code example produces the following output:
'
'k = 33

using System;
using System.Reflection;

class Example
{
    static void Main()
    {
        // To invoke MyMethod with the default argument value, pass 
        // Missing.Value for the optional parameter.
        MethodInfo mi = typeof(MissingSample).GetMethod("MyMethod");
        mi.Invoke(null, new Object[] { Missing.Value });
    }
} 

/* This code example produces the following output:

k = 33
 */

#using "target.dll"

using namespace System;
using namespace System::Reflection;

void main()
{
    // To invoke MyMethod with the default argument value, pass 
    // Missing::Value for the optional parameter.
    MethodInfo^ mi = MissingSample::typeid->GetMethod("MyMethod");
    mi->Invoke(nullptr, gcnew array<Object^> { Missing::Value });
};    

/* This code example produces the following output:

k = 33
 */