_DatumsListboxen

def_start_date = 01.01.1970
def_end_date = 31.12.2099
calendar= @G150

xaml = <StackPanel 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <toolkit:Calendar xmlns:toolkit="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit" 
    Name="Calendar" 
    Margin ="0,-3,0,-2">
    </toolkit:Calendar>
  </StackPanel>