WinUI3 and Drag and Drop - drag-and-drop

Question

I am trying to get Drag and Drop working with WinUI3. In WPF I used to add added both AllowDrop and Drop to a UI element and I was able to receive the filename of a dropped file. However in WinUI3 the method Drop is not beeing executed. What am I doing wrong?
XAML
<Page
x:Class="..."
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="..."
xmlns:helper="..."
xmlns:prop="..."
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Page.Resources>
<DataTemplate x:Key="Image" x:DataType="helper:ProductImage">
<Border BorderBrush="{x:Bind Path=Color, Mode=OneWay}" BorderThickness="1" Background="Transparent"
AllowDrop="True" Drop="Image_Drop" >
<Grid Width="{Binding ElementName=PIImageSize, Path=Value}"
Height="{Binding ElementName=PIImageSize, Path=Value}" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Margin="2" HorizontalAlignment="Center"
Text="{x:Bind Path=Type, Mode=OneWay}"
Foreground="{x:Bind Path=Color, Mode=OneWay}" />
<Image Grid.Row="1" Stretch="Uniform" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Source="{x:Bind Path=BitmapImage, Mode=OneWay}"/>
<TextBox Grid.Row="2" Text="{x:Bind Path=Path, Mode=TwoWay}" />
</Grid>
<Border.ContextFlyout>
</Border.ContextFlyout>
</Border>
</DataTemplate>
</Page.Resources>
...
</Page>
Code
private void Image_Drop(object sender, DragEventArgs e)
{
// Function is not executed
}

Answer 1

You also have to add the DragOver event, to accept the operation:
private void Image_DragOver(object sender, DragEventArgs e)
{
e.AcceptedOperation = Windows.ApplicationModel.DataTransfer.DataPackageOperation.Copy;
}