xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:col="clr-namespace:System.Collections;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
Header="Year"
Width="50"/>
Header="Month"
Width="50"/>
Header="Day"
Width="50"/>
2006/1/1
2006/1/2