TestingDemo/Test/pgList.xaml

<Page x:Class="Test.pgList"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:Test"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="pgList">
    <Page.Resources>
        <DataTemplate x:Key="dtProdout">
            <StackPanel>
                <TextBlock Text="{Binding Name}"></TextBlock>
            </StackPanel>
        </DataTemplate>
    </Page.Resources>

    <Grid>
        <ListBox Name="lbProd" ItemTemplate="{StaticResource dtProdout}" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel Orientation="Horizontal"></WrapPanel>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
        </ListBox>
    </Grid>
</Page>