How to: Bind XtraPivotGrid to Database

The result of the code is shown below:

using DevExpress.LookAndFeel;
using DevExpress.XtraPivotGrid;
using System.Data.OleDb;

// Create a connection object.
OleDbConnection connection = 
new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\DB\\NWIND.MDB");
// Create a data adapter.
OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * FROM SalesPerson", connection);

// Create and fill a dataset.
DataSet sourceDataSet = new DataSet();
adapter.Fill(sourceDataSet, "SalesPerson");

// Assign the data source to the XtraPivotGrid control.
pivotGridControl1.DataSource = sourceDataSet.Tables["SalesPerson"];

// Create a row pivot grid field bound to the Country datasource field.
PivotGridField fieldCountry = new PivotGridField("Country", PivotArea.RowArea);

// Create a row pivot grid field bound to the Sales Person datasource field.
PivotGridField fieldCustomer = new PivotGridField("Sales Person", PivotArea.RowArea);
fieldCustomer.Caption = "Customer";

// Create a column pivot grid field bound to the OrderDate datasource field.
PivotGridField fieldYear = new PivotGridField("OrderDate", PivotArea.ColumnArea);
fieldYear.Caption = "Year";         
// Group field values by years.
fieldYear.GroupInterval = PivotGroupInterval.DateYear;         

// Create a column pivot grid field bound to the CategoryName datasource field.
PivotGridField fieldCategoryName = new PivotGridField("CategoryName", PivotArea.ColumnArea);
fieldCategoryName.Caption = "Product Category";         

// Create a filter pivot grid field bound to the ProductName datasource field.
PivotGridField fieldProductName = new PivotGridField("ProductName", PivotArea.FilterArea);
fieldProductName.Caption = "Product Name";

// Create a data pivot grid field bound to the 'Extended Price' datasource field.
PivotGridField fieldExtendedPrice = new PivotGridField("Extended Price", PivotArea.DataArea);
fieldExtendedPrice.CellFormat.FormatType = DevExpress.Utils.FormatType.Numeric;
// Specify the formatting setting to format summary values as integer currency amount.
fieldExtendedPrice.CellFormat.FormatString = "c0";

// Add the fields to the control's field collection.         
pivotGridControl1.Fields.AddRange(new PivotGridField[] {fieldCountry, fieldCustomer, 
  fieldCategoryName, fieldProductName, fieldYear, fieldExtendedPrice});

// Arrange the row fields within the Row Header Area.
fieldCountry.AreaIndex = 0;
fieldCustomer.AreaIndex = 1;

// Arrange the column fields within the Column Header Area.
fieldCategoryName.AreaIndex = 0;
fieldYear.AreaIndex = 1;         

// Customize the control's look-and-feel via the Default LookAndFeel object.
UserLookAndFeel.Default.UseWindowsXPTheme = false;
UserLookAndFeel.Default.Style = LookAndFeelStyle.Skin;
UserLookAndFeel.Default.SkinName = "Money Twins";