OmagVIEWPlus/Warehouse/WarehouseV.xaml

<UserControl x:Class="WarehouseV"
             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:OmagVIEWPlus="clr-namespace:OmagVIEWPlus"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <GroupBox BorderBrush="Black" Margin="5,0,0,5">
        <GroupBox.Header>
            <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding Id}"
                    Margin="10,0,5,0"/>
                <TextBlock Text="{Binding FillPercentage}"
                    Margin="5,0,10,0"
                    Visibility="{Binding FillPercentage_Visibility}"/>
            </StackPanel>
        </GroupBox.Header>
        <Grid IsEnabled="{Binding IsEnabled}" Margin="0,0,0,-5">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="1*"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="1*"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>

            <ItemsControl ItemsSource="{Binding GridBoxList}"
                 Grid.Row="0">
                <ItemsControl.ItemsPanel>
                    <ItemsPanelTemplate>
                        <UniformGrid Columns="3" Rows="1"/>
                    </ItemsPanelTemplate>
                </ItemsControl.ItemsPanel>
                <ItemsControl.ItemTemplate>
                    <DataTemplate>
                        <OmagVIEWPlus:GridBoxesV/>
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>

            <UniformGrid Grid.Row="1" Grid.Column="1"
                         Width="100" Height="35"
                         HorizontalAlignment="Center">
            <Button Content="Confirm" Margin="0,-10,0,10"
                    VerticalContentAlignment="Center"
                    Command="{Binding Confirm_Command}"
                    Visibility="{Binding VisibilityConfirmBtn}"/>
            <Button Content="Unloaded" Margin="5,0,10,0"
                    VerticalContentAlignment="Center"
                    Command="{Binding Unloaded_Command}"
                    Visibility="Collapsed"/>
            </UniformGrid>

        </Grid>
    </GroupBox>
</UserControl>