using System.Windows;
using System.Collections.ObjectModel;
using DevExpress.XtraReports.UI;
using DevExpress.Xpf.Grid.Printing;
using DevExpress.XtraExport.Helpers;
using DevExpress.Xpf.Reports.UserDesigner;

namespace DXGridSample {
    public partial class MainWindow : Window {
        ...
        void BarButtonItem_ItemClick(object sender, DevExpress.Xpf.Bars.ItemClickEventArgs e) {
            ShowDesigner(tableView);
        }
        // Initializes and runs a Report Designer.
        public static void ShowDesigner(IGridViewFactory<ColumnWrapper, RowBaseWrapper> factory) {
            var report = new XtraReport();
            ReportGenerationExtensions<ColumnWrapper, RowBaseWrapper>.Generate(report, factory);
            ReportDesigner reportDesigner = new ReportDesigner();
            reportDesigner.Loaded += (s, e) => {
                reportDesigner.OpenDocument(report);
            };
            reportDesigner.ShowWindow(factory as FrameworkElement);
        }
    }
}

Imports System.Windows
Imports System.Collections.ObjectModel
Imports DevExpress.XtraReports.UI
Imports DevExpress.Xpf.Grid.Printing
Imports DevExpress.XtraExport.Helpers
Imports DevExpress.Xpf.Reports.UserDesigner

Namespace DXGridSample
    Partial Public Class MainWindow
        Inherits Window
        ...
        Sub BarButtonItem_ItemClick(ByVal sender As Object, ByVal e As DevExpress.Xpf.Bars.ItemClickEventArgs)
            ShowDesigner(tableView)
        End Sub
        ' Initializes and runs a Report Designer.
        Public Shared Sub ShowDesigner(ByVal factory As IGridViewFactory(Of ColumnWrapper, RowBaseWrapper))
            Dim report = New XtraReport()
            ReportGenerationExtensions(Of ColumnWrapper, RowBaseWrapper).Generate(report, factory)
            Dim reportDesigner As New ReportDesigner()
            AddHandler reportDesigner.Loaded, Sub(s, e) reportDesigner.OpenDocument(report)
            reportDesigner.ShowWindow(TryCast(factory, FrameworkElement))
        End Sub
    End Class
End Namespace

<Window 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid" 
    xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars" 
    xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm" 
    xmlns:dxrudex="http://schemas.devexpress.com/winfx/2008/xaml/reports/userdesignerextensions" 
    x:Class="DXGridSample.MainWindow"
    Title="MainWindow" 
    Height="350" Width="525">
    <DockPanel>
        <dxb:ToolBarControl DockPanel.Dock="Top" >
            <dxb:BarSplitButtonItem Glyph="{dx:DXImage Image=Print_16x16.png}">
                <dxmvvm:Interaction.Behaviors>
                    <dxrudex:ReportManagerBehavior Service="{Binding ElementName=reportManagerService}"/>
                </dxmvvm:Interaction.Behaviors>
            </dxb:BarSplitButtonItem>
        </dxb:ToolBarControl>
        <dxg:GridControl x:Name="grid" AutoGenerateColumns="AddNew">
            <dxg:GridControl.View>
                <dxg:TableView x:Name="view">
                    <dxmvvm:Interaction.Behaviors>
                        <dxrudex:GridReportManagerService x:Name="reportManagerService" />
                    </dxmvvm:Interaction.Behaviors>
                </dxg:TableView>
            </dxg:GridControl.View>
        </dxg:GridControl>
    </DockPanel>
</Window>