Public Delegate Function StringConverter.TryParseMethod(Of TYPE)( _
   ByVal text As String, _
   ByRef value As TYPE _
) As Boolean

public delegate bool StringConverter.TryParseMethod<TYPE>( 
   string text,
   out TYPE value
)

DateTime date = new DateTime(2000, 1,2,3,4,5,6);
string dt = date.ToString();

StringConverter c = new StringConverter();

Assert.AreNotEqual(dt, c.ToString(date));

c.Add<DateTime>(DateTime.TryParse, delegate(DateTime value) { return value.ToString(); });

Assert.AreEqual(dt, c.ToString(date));

Dim [date] As New DateTime(2000, 1, 2, 3, 4, 5, _
    6)
Dim dt As String = [date].ToString()

Dim c As New StringConverter()

Assert.AreNotEqual(dt, c.ToString([date]))

c.Add(Of DateTime)(DateTime.TryParse, Function(value As DateTime) Do
    Return value.ToString()
End Function)

Assert.AreEqual(dt, c.ToString([date]))