XtraReportBase.XmlDataPath Property

using DevExpress.XtraReports.UI;
//...
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    private void Form1_Load(object sender, EventArgs e)
    {
        XtraReport report = CreateReport();
        ReportDesignTool designTool = new ReportDesignTool(report);
        designTool.ShowRibbonDesignerDialog();
    }

    private XtraReport CreateReport()
    {
        XtraReport report = new XtraReport();
        report.XmlDataPath = "ComplexTypes.xml";
        return report;
    }
}

Imports DevExpress.XtraReports.UI
'...
Partial Public Class Form1
    Inherits Form

    Public Sub New()
        InitializeComponent()
    End Sub
    Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
        Dim report As XtraReport = CreateReport()
        Dim designTool As New ReportDesignTool(report)
        designTool.ShowRibbonDesignerDialog()
    End Sub

    Private Function CreateReport() As XtraReport
        Dim report As New XtraReport()
        report.XmlDataPath = "ComplexTypes.xml"
        Return report
    End Function
End Class

<!-- ComplexTypes.xml -->
<?xml version="1.0" encoding="UTF-8"?>
<Report>
    <Data>
        <Row>
            <Id>1</Id>
            <Name>Mark</Name>
            <Date>10/09/14</Date>
        </Row>
        <Row>
            <Id>2</Id>
            <Name>Lisa</Name>
            <Date>24/04/11</Date>
        </Row>
    </Data>
</Report>