Width="{Binding RelativeSource= {RelativeSource FindAncestor, AncestorType={x:Type ListView}}, Path=ActualWidth}" Height="{Binding RelativeSource= {RelativeSource FindAncestor, AncestorType={x:Type ListView}}, Path=ActualHeight}">

 <hc:ScrollViewer x:Name="scrList"  >
            <WrapPanel Orientation="Horizontal" Width="{Binding ElementName=scrList, Path=Width, Mode=OneWay}" HorizontalAlignment="Center">

注意绑定  Mode = OneWay(a => b, b ≠> a)