VB - Binärwert einer Dezimalzahl berechnen

Public Function DecToBin(ByVal Number As Double) As String
    Dim Bin As New List(Of String)
    Do
        If Number Mod 2 = 0 Then
            Bin.Add("0")
        Else
            Bin.Add("1")
        End If
        Number \= 2
    Loop Until Number = 0
    Bin.Reverse()
    Return Join(Bin.ToArray, "")
End Function