PDFOffice_Windows_exe/PDF Office/Views/HomePanel/CloudDrive/CloudDriveContent.xaml

<UserControl x:Class="PDF_Office.Views.HomePanel.CloudDrive.CloudDriveContent"
             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:PDF_Office.Views.HomePanel.CloudDrive"
             xmlns:prism ="http://prismlibrary.com/"
             prism:ViewModelLocator.AutoWireViewModel="True"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid  Margin="44,38,0,0">
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>

        <Grid HorizontalAlignment="Stretch">
            <TextBlock Text="Cloud disk" HorizontalAlignment="Left"/>
            <ComboBox x:Name="combCloudDisk" Width="115" Height="32" Background="Wheat" HorizontalAlignment="Right">
                <ComboBox.ItemTemplate>
                    <DataTemplate>
                        <Border Background="#DBDBDB">
                            <TextBlock Text="{Binding DriveName}"/>
                        </Border>
                    </DataTemplate>
                </ComboBox.ItemTemplate>
            </ComboBox>
        </Grid>
        <ListBox x:Name="ListCloudDisk" Grid.Row="1">
            　
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <UniformGrid Columns="4"/>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>

            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Border Background="#DBDBDB" Width="218" Height="172">
                        <TextBlock Text="{Binding DriveName}"/>
                    </Border>
                </DataTemplate>
            </ListBox.ItemTemplate>

            <ListBox.ItemContainerStyle>
                <Style TargetType="{x:Type ListBoxItem}">
                    <EventSetter Event="PreviewMouseLeftButtonUp" 
                                 Handler="SelectCloudDrive_Click"
                                 />
                </Style>
            </ListBox.ItemContainerStyle>

        </ListBox>
    </Grid>
</UserControl>