SunlightCentralizedControlManagement/View/Whole.xaml

<UserControl x:Class="SunlightCentralizedControlManagement_SCCM_.View.Whole"
             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:SunlightCentralizedControlManagement_SCCM_.View"
             mc:Ignorable="d"  Loaded="UserControl_Loaded"
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <ScrollViewer Margin="0" VerticalScrollBarVisibility="Auto">
            <WrapPanel Orientation="Horizontal" x:Name="WholeView" Background="White"/>
        </ScrollViewer>
    </Grid>
</UserControl>