How to: Save the PivotGridControl Data to a File for Later Use

• Jul 09, 2019
• 2 minutes to read

This example shows how to save (or restore) the PivotGridControl‘s data and layout to a file. To correctly restore fields if the pivot grid’s PivotGridControl.Fields collection is empty, the PivotSerializationOptions.RemoveOldFields property should be set to false.

MainWindow.xaml.vb

Imports Microsoft.VisualBasic
Imports System.Data
Imports System.Data.OleDb
Imports System.Windows
Imports DevExpress.Xpf.PivotGrid
Imports HowToBindToMDB.NwindDataSetTableAdapters
Imports System.IO
Imports DevExpress.Xpf.Core

Namespace HowToBindToMDB
    ''' <summary>
    ''' Interaction logic for MainWindow.xaml
    ''' </summary>
    Partial Public Class MainWindow
        Inherits Window
        Private salesPersonDataTable As New NwindDataSet.SalesPersonDataTable()
        Private salesPersonDataAdapter As New SalesPersonTableAdapter()

        Public Sub New()
            InitializeComponent()
            pivotGridControl1.DataSource = salesPersonDataTable
        End Sub

        Private Sub Window_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
            salesPersonDataAdapter.Fill(salesPersonDataTable)
        End Sub

        Private Sub button1_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            pivotGridControl1.SavePivotGridToFile("pivot.dat", True)
            pivotGridControl1.DataSource = Nothing
            pivotGridControl1.Fields.Clear()
        End Sub

        Private Sub button2_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            If (Not File.Exists("pivot.dat")) Then
                DXMessageBox.Show("You should save the PivotGrid into a file first")
                Return
            End If
            pivotGridControl1.RestorePivotGridFromFile("pivot.dat")
        End Sub
    End Class
End Namespace

MainWindow.xaml

<Window x:Class="HowToBindToMDB.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxpg="http://schemas.devexpress.com/winfx/2008/xaml/pivotgrid"
        Title="MainWindow" Height="350" Width="525"  Loaded="Window_Loaded">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <dxpg:PivotGridControl dxpg:PivotSerializationOptions.RemoveOldFields="False"
                               HorizontalAlignment="Left" Name="pivotGridControl1" 
                               VerticalAlignment="Top" Margin="0,0,0,8">
            <dxpg:PivotGridControl.Fields>
                <dxpg:PivotGridField Name="fieldCountry" FieldName="Country" Area="RowArea" />
                <dxpg:PivotGridField Name="fieldCustomer" FieldName="Sales Person" Area="RowArea" 
                                     Caption="Customer" />
                <dxpg:PivotGridField Name="fieldYear" FieldName="OrderDate" Area="ColumnArea" 
                                     Caption="Year" GroupInterval="DateYear" />
                <dxpg:PivotGridField Name="fieldCategoryName" FieldName="CategoryName" 
                                     Area="ColumnArea" Caption="Product Category" />
                <dxpg:PivotGridField Name="fieldProductName" FieldName="ProductName" 
                                     Area="FilterArea" Caption="Product Name" />
                <dxpg:PivotGridField Name="fieldExtendedPrice" FieldName="Extended Price" 
                                     Area="DataArea" CellFormat="c0" />
            </dxpg:PivotGridControl.Fields>
        </dxpg:PivotGridControl>
        <StackPanel Orientation="Horizontal" Grid.Row="1">
            <Button Content="Save and unbind" Height="23" Name="button1" 
                    Grid.Row="1" Click="button1_Click" 
                    Margin="0,0,8,0" Padding="8,0,8,0" />
            <Button Content="Restore" Height="23" Name="button2" 
                    Grid.Row="1" Grid.Column="1" 
                    Click="button2_Click" 
                    Padding="8,0,8,0" />
        </StackPanel>        
    </Grid>
</Window>

MainWindow.xaml.cs

using System.Data;
using System.Data.OleDb;
using System.Windows;
using DevExpress.Xpf.PivotGrid;
using HowToBindToMDB.NwindDataSetTableAdapters;
using System.IO;
using DevExpress.Xpf.Core;

namespace HowToBindToMDB {
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window {
        NwindDataSet.SalesPersonDataTable salesPersonDataTable = new NwindDataSet.SalesPersonDataTable();
        SalesPersonTableAdapter salesPersonDataAdapter = new SalesPersonTableAdapter();

        public MainWindow() {
            InitializeComponent();
            pivotGridControl1.DataSource = salesPersonDataTable;
        }

        private void Window_Loaded(object sender, RoutedEventArgs e) {
            salesPersonDataAdapter.Fill(salesPersonDataTable);
        }

        private void button1_Click(object sender, RoutedEventArgs e) {
            pivotGridControl1.SavePivotGridToFile("pivot.dat", true);
            pivotGridControl1.DataSource = null;
            pivotGridControl1.Fields.Clear();
        }

        private void button2_Click(object sender, RoutedEventArgs e) {
            if(!File.Exists("pivot.dat")) {
                DXMessageBox.Show("You should save the PivotGrid into a file first");
                return;
            }
            pivotGridControl1.RestorePivotGridFromFile("pivot.dat");
        }
    }
}