你需要给ListView启用垂直滚动或者水平滚动:
<ListView x:Name="lv" Margin="54,124,35,55" ScrollViewer.VerticalScrollMode="Enabled" ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollMode="Enabled">
其不要写高度:height=1018,如果写了,就要超过这个“高度”才会出现滚卷条!