Hello Krasimir and thank you for posting this sample project; it works great! I have just cut and paste the templete code in may own project and the drag action does nothing. What setting on the DataCarousel might surpress the mouse action; it is like the code never sees the mouse event.

Here my code:

<Style TargetType="{x:Type igDP:CarouselItem}">
<Setter Property="ItemDisappearingStoryboard" Value="{DynamicResource ItemDisappearing}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type igDP:CarouselItem}">
<Grid x:Name="root">

<ig:DragDropManager.DragSource>
<ig:DragSource IsDraggable="True"/>
</ig:DragDropManager.DragSource>


<Grid.RowDefinitions>
<RowDefinition Height="{Binding Path=(idgControl:XamCarouselPanel.ViewSettings).(idgControl:CarouselViewSettings.ItemSize).Height, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:CarouselViewPanel}}}"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>

<ScrollViewer
x:Name="ScrollViewer"
Focusable="false"
HorizontalScrollBarVisibility="{TemplateBinding ItemHorizontalScrollBarVisibility}"
VerticalScrollBarVisibility="{TemplateBinding ItemVerticalScrollBarVisibility}"
VerticalAlignment="Bottom">
<Viewbox x:Name="ViewBox" VerticalAlignment="Bottom" HorizontalAlignment="Center">
<Grid x:Name="itemContentHolder">
<Border
x:Name="itemContentHolderBackground"
BorderThickness="1"
CornerRadius="5"
BorderBrush="{TemplateBinding BorderBrush}"
Background="{TemplateBinding Background}"/>

<ContentControl
x:Name="itemContent"
Focusable="false"
Grid.Row="0"
Content="{TemplateBinding Content}"/>
</Grid>
</Viewbox>
</ScrollViewer>

<Grid x:Name="glyphCanvas" Grid.Row="0">
<idgControl:ExpansionIndicator
x:Name="ExpansionIndicator"
Canvas.Left="{Binding Path=ActualWidth, ElementName=glyphCanvas}"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
IsChecked="{Binding Path=IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
Margin="0,0,-11,0"
Background="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type igDP:XamDataGrid}, ResourceId=CarouselItemExpansionIndicator}}"
Visibility="{Binding Path=ExpansionIndicatorVisibility, RelativeSource={RelativeSource TemplatedParent}}">
<idgControl:ExpansionIndicator.Template>
<ControlTemplate TargetType="{x:Type idgControl:ExpansionIndicator}">
<Grid>
<Path
x:Name="selectorArrow"
RenderTransformOrigin="0.5,0.5"
Fill="{TemplateBinding Background}"
Stretch="Fill"
Stroke="#00CCCCCC"
StrokeThickness="1"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Margin="{TemplateBinding Padding}"
Width="10"
Height="10"
Cursor="{TemplateBinding Cursor}"
Data="M10,0L10,10 0,10z"
Visibility="Visible"/>
</Grid>
</ControlTemplate>
</idgControl:ExpansionIndicator.Template>
</idgControl:ExpansionIndicator>
</Grid>

<Border
Grid.Row="1"
Visibility="{Binding Path=ReflectionVisibility, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:CarouselViewPanel}}}"
Height="{Binding Path=ActualHeight, ElementName=ScrollViewer}"
Width="{Binding Path=ActualWidth, ElementName=ScrollViewer}"
IsHitTestVisible="False"
Margin="0,1,0,0"
x:Name="reflection"
VerticalAlignment="Top">
<Border.Background>
<VisualBrush
Visual="{Binding ElementName=ScrollViewer}"
Stretch="None"
Opacity=".15"
AlignmentX="Center"
AlignmentY="Bottom">
<VisualBrush.RelativeTransform>
<TransformGroup>
<MatrixTransform Matrix="1,0,0,-1,0,0"/>
<TranslateTransform Y="1"/>
</TransformGroup>
</VisualBrush.RelativeTransform>
</VisualBrush>
</Border.Background>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="AutoScaleItemContentsToFit" Value="true">
<Setter TargetName="ScrollViewer" Property="HorizontalScrollBarVisibility" Value="Disabled"/>
<Setter TargetName="ScrollViewer" Property="VerticalScrollBarVisibility" Value="Disabled"/>
<Setter TargetName="ScrollViewer" Property="Focusable" Value="False"/>
<Setter TargetName="ViewBox" Property="Stretch" Value="Uniform"/>
<Setter TargetName="ViewBox" Property="StretchDirection" Value="Both"/>
</Trigger>

<Trigger Property="IsOpacityReduced" Value="True">
<Setter TargetName="root" Property="Opacity" Value="0.35"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

<igDP:XamDataCarousel
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Width="Auto"
Height="Auto"
x:Name="CmsCommands"
Theme="IGTheme"
GroupByAreaLocation="None"
Grid.Row="1"
Initialized="CmsCommands_Initialized"
IsSynchronizedWithCurrentItem="True"
AutoFit="True"
BindToSampleData="False"
BorderThickness="1"
Margin="2,10,2,2">

<igDP:XamDataCarousel.FieldSettings>
<igDP:FieldSettings
LabelTextAlignment="Center" LabelTextWrapping="Wrap" AllowResize="True"
CellClickAction="EnterEditModeIfAllowed"/>
</igDP:XamDataCarousel.FieldSettings>

<igDP:XamDataCarousel.FieldLayoutSettings>
<igDP:FieldLayoutSettings AutoGenerateFields="True" HighlightAlternateRecords="True"/>
</igDP:XamDataCarousel.FieldLayoutSettings>

<igDP:XamDataCarousel.ViewSettings>
<idgControl:CarouselViewSettings
ItemPathAutoPad="True"
ItemPathPadding="5,5,5,5"
IsListContinuous="True"
ItemPathHorizontalAlignment="Stretch"
ItemPathVerticalAlignment="Stretch"
ItemSize="150,150"
OpacityEffectStopDirection="Vertical"
ScalingEffectStopDirection="Vertical"
ItemsPerPage="7"
AutoScaleItemContentsToFit="True"
ItemPathRenderBrush="Transparent"
RotateItemsWithPathTangent="False"
ShouldAnimateItemsOnListChange="True"
UseOpacity="False">

<idgControl:CarouselViewSettings.ItemPathRenderPen>
<Pen Brush="#FFEDE8E8" />
</idgControl:CarouselViewSettings.ItemPathRenderPen>

<idgControl:CarouselViewSettings.OpacityEffectStops>
<idgControl:OpacityEffectStop Offset="0"
Value="0.5" />
<idgControl:OpacityEffectStop Offset="0.5"
Value="1" />
<idgControl:OpacityEffectStop Offset="1"
Value="0.5" />
</idgControl:CarouselViewSettings.OpacityEffectStops>

<idgControl:CarouselViewSettings.ScalingEffectStops>
<idgControl:ScalingEffectStop />
<idgControl:ScalingEffectStop Offset="1"
Value="2" />
</idgControl:CarouselViewSettings.ScalingEffectStops>

</idgControl:CarouselViewSettings>
</igDP:XamDataCarousel.ViewSettings>
</igDP:XamDataCarousel>

Tavi