Functional Recommendations：ctrl+drag

[DR-ShenSSR]

Functional Recommendations
Is there a ctrl+drag that allows copy insertion? I think this would be helpful for separate object manipulation, for example to help chapter catalogs to be built through existing templates

[DR-ShenSSR]

First of all thanks for the existence of such a great plugin.
I get conflicts with the program when I write the following code：
Private Shared Sub StartDragDrop(row As DataGridRow)
If row IsNot Nothing Then
SetIsDragging(row, True)
If Keyboard.IsKeyDown(Key.LeftCtrl) OrElse Keyboard.IsKeyDown(Key.RightShift) Then
' Hold Ctrl to drag and drop as copy and add the
DragDrop.DoDragDrop(row, row.Item, DragDropEffects.Copy)
End If
End If
End Sub

[punker76]

There is a clone sample in the main sample application

gong-wpf-dragdrop/src/Showcase/Views/MixedSamples.xaml

Lines 349 to 401 in e6daaf7

	<DockPanel LastChildFill="True">
	<TextBlock DockPanel.Dock="Top"
	Style="{StaticResource SampleHeaderTextBlockStyle}"
	Text="Cloning" />
	<ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
	<StackPanel>
	<TextBlock Style="{StaticResource DefaultTextBlockStyle}" Text="Demonstrates the cloning behaviour with 2 ListBoxes bound to collections of the same type. The Model of the collections implements the ICloneable interface. You can clone an Item by holding the CTRL key while drag and drop." />
	<Grid>
	<Grid.ColumnDefinitions>
	<ColumnDefinition Width="*" />
	<ColumnDefinition Width="*" />
	</Grid.ColumnDefinitions>
	<Grid.RowDefinitions>
	<RowDefinition Height="*" />
	<RowDefinition Height="Auto" />
	</Grid.RowDefinitions>
	<ListBox x:Name="LeftClonableListBox"
	Grid.Row="0"
	Grid.Column="0"
	HorizontalContentAlignment="Stretch"
	dd:DragDrop.DragAdornerTemplate="{StaticResource CloningTemplate}"
	dd:DragDrop.DragDropCopyKeyState="ControlKey"
	dd:DragDrop.IsDragSource="True"
	dd:DragDrop.IsDropTarget="True"
	dd:DragDrop.UseDefaultEffectDataTemplate="True"
	ItemContainerStyle="{StaticResource ClonableListBoxItemStyle}"
	ItemTemplate="{StaticResource CloningTemplate}"
	ItemsSource="{Binding Data.ClonableCollection1}" />
	<ListBox x:Name="RightClonableListBox"
	Grid.Row="0"
	Grid.Column="1"
	HorizontalContentAlignment="Stretch"
	dd:DragDrop.DragAdornerTemplate="{StaticResource CloningTemplate}"
	dd:DragDrop.DragDropCopyKeyState="ControlKey"
	dd:DragDrop.IsDragSource="True"
	dd:DragDrop.IsDropTarget="True"
	ItemContainerStyle="{StaticResource ClonableListBoxItemStyle}"
	ItemTemplate="{StaticResource CloningTemplate}"
	ItemsSource="{Binding Data.ClonableCollection2}" />
	<views:SettingsView Grid.Row="1"
	Grid.Column="0"
	Caption="Customization (for left ListBox)"
	DataContext="{x:Reference LeftClonableListBox}" />
	<views:SettingsView Grid.Row="1"
	Grid.Column="1"
	Caption="Customization (for right ListBox)"
	DataContext="{x:Reference RightClonableListBox}" />
	</Grid>
	</StackPanel>
	</ScrollViewer>
	</DockPanel>