<Window xmlns:dxpg="http://schemas.devexpress.com/winfx/2008/xaml/pivotgrid"  
        x:Class="HowToSaveAndRestoreLayoutFromStream.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="380" Width="525" 
        xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core" 
        xmlns:my="clr-namespace:HowToSaveAndRestoreLayoutFromStream.nwindDataSetTableAdapters" 
        xmlns:my1="clr-namespace:HowToSaveAndRestoreLayoutFromStream">
    <Window.Resources>
        <dx:TypedSimpleSource x:Key="TypedSimpleSource" 
                              AdapterType="my:SalesPersonTableAdapter" 
                              ContextType="my1:nwindDataSet" Path="SalesPerson">
            <dx:DesignDataManager.DesignData>
                <dx:DesignDataSettings RowCount="5" />
            </dx:DesignDataManager.DesignData>
        </dx:TypedSimpleSource>
    </Window.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <dxpg:PivotGridControl HorizontalAlignment="Left" Name="pivotGridControl1" 
                               VerticalAlignment="Top" 
                           DataSource="{Binding Path=Data, Source={StaticResource TypedSimpleSource}}">
            <dxpg:PivotGridControl.Fields>
                <dxpg:PivotGridField Name="fieldCategory" FieldName="CategoryName" 
                                     Caption="Category" Area="RowArea" />
                <dxpg:PivotGridField Name="fieldYear" FieldName="OrderDate" Area="ColumnArea" 
                                     Caption="Year" GroupInterval="DateYear" />
                <dxpg:PivotGridField Name="fieldExtendedPrice" FieldName="Extended Price" 
                                     Area="DataArea" CellFormat="c0"/>
            </dxpg:PivotGridControl.Fields>
        </dxpg:PivotGridControl>
        <StackPanel Grid.Row="1" Orientation="Horizontal">
            <Button Name="buttonSave" Content="Save" Padding="8, 4, 8, 4" 
                    Margin="4" Click="buttonSave_Click" ></Button>
            <Button Name="buttonLoad" Content="Load" Padding="8, 4, 8, 4" 
                    Margin="4" Click="buttonLoad_Click"></Button>
        </StackPanel>
    </Grid>
</Window>

Imports System.Windows

Namespace HowToSaveAndRestoreLayoutFromStream
    Partial Public Class MainWindow
        Inherits Window

        ' Create a MemoryStream instance.
        Private LayoutStream As System.IO.Stream = New System.IO.MemoryStream()

        Public Sub New()
            InitializeComponent()
        End Sub

        Private Sub buttonSave_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            ' Save the layout to a stream.
            pivotGridControl1.SaveLayoutToStream(LayoutStream)
        End Sub

        Private Sub buttonLoad_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            LayoutStream.Position = 0
            ' Load the layout from the stream.
            pivotGridControl1.RestoreLayoutFromStream(LayoutStream)
        End Sub
    End Class
End Namespace

using System.Windows;

namespace HowToSaveAndRestoreLayoutFromStream {
    public partial class MainWindow : Window {
        // Create a MemoryStream instance.
        System.IO.Stream LayoutStream = new System.IO.MemoryStream();
        public MainWindow() {
            InitializeComponent();
        }
        private void buttonSave_Click(object sender, RoutedEventArgs e) {
            // Save the layout to a stream.
            pivotGridControl1.SaveLayoutToStream(LayoutStream);
        }
        private void buttonLoad_Click(object sender, RoutedEventArgs e) {
            LayoutStream.Position = 0;
            // Load the layout from the stream.
            pivotGridControl1.RestoreLayoutFromStream(LayoutStream);
        }
    }
}