New Post: PropertyGrid does not work to expand the use expandable object

Hi,

Instead of modifying the existing code for the Value binding, I've you thought about using the PropertyGrid.Properties property instead of PropertyGrid.SelectedObject property ? You could define your own CustomPropertyItems.
Since you don't seem to need the binding, this could be an option :

<xctk:PropertyGrid x:Name="_propertyGrid" Width="450" MaxHeight="375" Margin="10">
         <xctk:PropertyGrid.CategoryGroupDescription>
            <PropertyGroupDescription PropertyName="Category"/>
         </xctk:PropertyGrid.CategoryGroupDescription>
</xctk:PropertyGrid>

var obj2 = new CustomPropertyItem
      {
        Description = "Propiedades da lista de usúarios",
        DisplayName = "UsersList",
        IsExpandable = true,
        Category = "Componentes",
        Value = "Componente 1",
        Properties =
                {
                    new CustomPropertyItem
                    {
                        Description = "Id da configuração de pesquisa de úsuario",
                        Category = "Propiedades",
                        DisplayName = "UserSearchId",
                        Value = 0
                    },
                    new CustomPropertyItem
                    {
                        Description = "Id da tabela de visualização de úsuarios",
                        Category = "Propiedades",
                        DisplayName = "UserTableId",
                        Value = 0
                    },
                },
      };

  _propertyGrid.Properties.Add( obj2 );

Please note that the subItems may not have the Category added. We are aware of this and try to do a fix for it.