The following quick start guide is intended to get you up and running with the Expander control. In this quick start, you'll start with creating a new WinUI application, add the Expander control to it, and add ListBox in the content area of the Expander control.

The following image displays a contact list in the Expander control created using the ListBox control.

Create a WinUI Application and add References

1. In Visual Studio, create a new WinUI App. For detailed steps, see Configure WinUI Application.
2. In the Solution Explorer, right click Dependencies and select Manage NuGet Packages.
3. In NuGet Package Manager, select nuget.org as the Package source.
4. Search and select the following package and click Install.
   • C1.WinUI.Accordion
   • C1.WinUI.Core

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Configure the Expander control

1. Declare the namespace using the following code in XAML:
   

   XAML	コードのコピー
   xmlns:c1 ="using:C1.WinUI.Accordion"

2. Place the cursor between the <Grid></Grid> tag to add the Expander control and ListBox as content in the Expander control using the following code:
   

   XAML

   コードのコピー

   <c1:C1Expander x:Name="expander" Header="Contact List" MaxWidth="300" VerticalAlignment="Top" HorizontalAlignment="Center" IsExpanded="False" Background="Linen" Margin="40,20,40,20"> <!--ListBox used as Expander content--> <ListBox Background="Transparent" BorderThickness="0"> <!--ListBoxItem 1--> <ListBoxItem> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="55" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Image Source="\IconImages\contact_icon.png"></Image> <TextBlock Text="Name: &#xA;E-Mail: &#xA;Phone:" TextWrapping="Wrap" Grid.Column="1" d:LayoutOverrides="HorizontalAlignment" HorizontalAlignment="Left" FontSize="10" VerticalAlignment="Center"/> <TextBlock Text="John Smith" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" VerticalAlignment="Top" Margin="40,4,0,0" /> <TextBlock Text="johns@e-mail.com" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" d:LayoutOverrides="Height" VerticalAlignment="Center" Margin="40,0,0,0" /> <TextBlock Text="555-5632" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" VerticalAlignment="Bottom" Margin="40,0,0,3" /> </Grid> </ListBoxItem> <!--ListBoxItem 2--> <ListBoxItem> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="55" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Image Source="\IconImages\contact_icon.png"></Image> <TextBlock Text="Name: &#xA;E-Mail: &#xA;Phone:" TextWrapping="Wrap" Grid.Column="1" Width="44" d:LayoutOverrides="HorizontalAlignment" HorizontalAlignment="Left" FontSize="10" VerticalAlignment="Center" /> <TextBlock Text="Bob Martin" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" Margin="40,4,0,0" VerticalAlignment="Top" /> <TextBlock Text="bobmartin@e-mail.com" TextWrapping="Wrap" Grid.Column="1" d:LayoutOverrides="HorizontalAlignment" HorizontalAlignment="Left" FontSize="10" VerticalAlignment="Center" Margin="40,0,0,0" /> <TextBlock Text="555-6128" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" VerticalAlignment="Bottom" Margin="40,0,0,2" /> </Grid> </ListBoxItem> <!--ListBoxItem 3--> <ListBoxItem> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="55" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Image Source="\IconImages\contact_icon.png"></Image> <TextBlock Text="Name: &#xA;E-Mail: &#xA;Phone:" TextWrapping="Wrap" Grid.Column="1" Width="44" d:LayoutOverrides="HorizontalAlignment" HorizontalAlignment="Left" FontSize="10" VerticalAlignment="Center" /> <TextBlock Text="Ricky Dylan" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" VerticalAlignment="Top" Margin="40,4,0,0" /> <TextBlock Text="rickydylan@e-mail.com" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" VerticalAlignment="Center" Margin="40,0,0,0" /> <TextBlock Text="555-2647" TextWrapping="Wrap" Grid.Column="1" HorizontalAlignment="Stretch" FontSize="10" VerticalAlignment="Bottom" Margin="40,0,0,3" /> </Grid> </ListBoxItem> </ListBox> </c1:C1Expander>

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Build and Run the Project

1. Click Build | Build Solution to build the project.
2. Press F5 to run the project.

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