using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Office.Interop.Word;
using Word = Microsoft.Office.Interop.Word;
using System.Windows.Xps.Packaging;

//using System.IO;
using System.Runtime.InteropServices;

using Microsoft.Office.Core;

namespace XPSViewer
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : System.Windows.Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

       
        public  string convertWordToXps(string path, string wordDocName)
        {
            Word.Application wordApp = new Word.Application();
            string pathe = System.AppContext.BaseDirectory;
            wordApp.Documents.Open(string.Concat(path, "\\", wordDocName), ConfirmConversions: false, ReadOnly: true);
            string xpsFile = string.Concat(path, "\\", System.IO.Path.GetFileNameWithoutExtension(wordDocName), ".xps");

            try
            {
                //wordApp.ActiveDocument.ExportAsFixedFormat(xpsFileName, WdExportFormat.wdExportFormatXPS, false, WdExportOptimizeFor.wdExportOptimizeForOnScreen, WdExportRange.wdExportAllDocument, 1, 1, WdExportItem.wdExportDocumentContent, false, true, WdExportCreateBookmarks.wdExportCreateNoBookmarks, false, true, false, nullObject);
                wordApp.ActiveDocument.SaveAs2(xpsFile, FileFormat: Word.WdSaveFormat.wdFormatXPS);
                return xpsFile;
            }
            catch (Exception e)
            {
                
            }
            finally
            {
                wordApp.Quit(SaveChanges: false, OriginalFormat: Type.Missing, RouteDocument: Type.Missing);
            }
            return null;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            string path = System.AppContext.BaseDirectory;
            string fileName = "test.docx";
           string xpsFile= convertWordToXps(path, fileName);
            XpsDocument doc = new XpsDocument(xpsFile, FileAccess.Read);
            xDocView.Document = doc.GetFixedDocumentSequence();
        }
    }
}