Seems prety clear to me, as I have the same problem :

How to bind the Visibility property of a NodeLayout (in a XamDataTree), to a property of the underlying data ?

Hello Fabien,

I am requesting sample project, becasue I cannot be completely sure how your Data is organized and where the Property which you want to bind the Layout's Visibility to is defined and to which object it belongs.

Thanks for the solution Fabien, it works :)

Hello Fabien,

Thank you for your feedback. I am glad that you resolved your issue and I believe that other community members may benefit from this as well.

Thanks again.

Ok, here's the solution I found :

Add a property in data class MyDataClass :

public bool IsVisible { get; set; }

Add ref to igPrimitives at the top of xaml :

xmlns:igPrim="http://schemas.infragistics.com/xaml/primitives"

Create a dynamic style :

<UserControl.Resources>
    <igPrim:BoolToVisibilityConverter x:Key="BoolToVisibility"/>
    <Style TargetType="{x:Type ig:XamDataTreeNodeControl}" x:Key="NodeStyle">
        <Setter Property="Visibility" Value="{Binding Node.Data.IsVisible, Converter={StaticResource BoolToVisibility}}" />
    </Style>
</UserControl.Resources>

Add style to every NodeLayout :

<ig:NodeLayout TargetTypeName="MyDataClass" DisplayMemberPath="Name" Key="DataNode" NodeStyle="{StaticResource NodeStyle}">
...
</ig:NodeLayout>

Every node checks the property IsVisible of the data an apply it to Visibility :-)