<StackPanel xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:g="clr-namespace:System.Globalization;assembly=mscorlib"> <ListBox Name="lstbox" HorizontalAlignment="Center" Margin="24" ItemsSource="{Binding Source={x:Static g:DateTimeFormatInfo.CurrentInfo}, Path=DayNames, Mode=OneTime}" /> </StackPanel>