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How to set the thickness of the docked children's borders in the DockingManager ?
The BorderThickness of each Docked window can be changed by the ElementBorderThickness property of the DockingManager. The following code example demonstrates how to set the BorderThickness for each DockedWindow.
XAML
<syncfusion:DockingManager x:Name="dockmanager" UseDocumentContainer="True" ElementBorderThickness="3"> <ContentControl Name="child1" syncfusion:DockingManager.Header="Dock1"></ContentControl> <ContentControl Name="child2" syncfusion:DockingManager.Header="Dock2"></ContentControl> <ContentControl Name="child3" syncfusion:DockingManager.Header="Dock3"></ContentControl> </syncfusion:DockingManager>
C#
dockmanager.ElementBorderThickness = new Thickness(3);
The following screenshot displays the docked child border thickness changed in the DockingManager.

Figure 1: Docked child border thickness changed in the DockingManager