hosting VSTO document in a WPF control

Question

Hi, In the project in vs2010. My solution has a word document, which i have added a new item, wpf user control to view that document. every this i run this command:

                       wordDocument1.Globals.ThisDocument.Path or Just wordDocument1.Globals.thisDocument

it gives me a nullReferenceArguement error, saying wordDocument1.Globals.thisDocument has not be initialize or it null.

i will really appreciate some help.:)

Answer 1

Hi,

To avoid this error check out :

avoiding null reference exceptions

I think that you have not added a reference for this namespace, "Microsoft.Office.Interop.Word." Add a reference of this in your project, then use documents.open method!

I hope this post was helpful to you!

Thanks

Answer 2

Thanks for the reply.

and sorry i probably did not make myself clear. The Document is created in vs, and the reference "Microsoft.Office.Interop.Word." has been added and called. Under my document class, I have added a new class, wpf user control. I would like to display that document inside a documentviewer in my usercontrol. The call worddocument.global.thisdocument give null reference because the factory and the serviceprovider are null when i create a new instance of that document in the usercontrol class.

Sample code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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 System.Windows.Xps.Packaging;

namespace WordDocument1
{
    /// <summary>
    /// Interaction logic for UserControl1.xaml
    /// </summary>
    public partial class UserControl1 : UserControl
    {
        public Microsoft.Office.Tools.Word.Factory factory { get; set; }

        public IServiceProvider serviceProvider { get; set; }

        public UserControl1()
        {
            InitializeComponent();
        }

        private XpsDocument convertToxps()
        {

            Microsoft.Office.Interop.Word.Document doc = new Document();

            doc = WordDocument1.Globals.ThisDocument.Application.ActiveDocument;

            string xpsdocname = String.Concat(System.IO.Path.GetDirectoryName(WordDocument1.Globals.ThisDocument.Path), "\\",
                                       System.IO.Path.GetFileNameWithoutExtension(WordDocument1.Globals.ThisDocument.Path), ".xps");

            doc.SaveAs(xpsdocname, Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatXPS);

            XpsDocument xpsDoc = new XpsDocument(xpsdocname, System.IO.FileAccess.Read);

            return xpsDoc;

        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            WordDocument1.Globals.ThisDocument.Open();
        }

        private void documentViewer1_PageViewsChanged(object sender, EventArgs e)
        {

        }
    }
}

Answer 3

OK, I am trying to view a document created in vs2010 in a wpf usercontrol document viewer. The ThisDocument class and the UserControl class are both object of the same project Worddocument1.docx.

outside of ThisDocument class, i know i have to use Globals.ThisDocument to get the word document or at least to get the path using Globals.ThisDocument.FullName or FullPath. so that i can convert it to a xps document and view it in my documentviewer usercontrol1.

Here is my problem.

In the Usercontrol1.cs, will try to initialize ThisDocument using the command:

                                  WordDocument1.Globlas.ThisDocument = new ThisDocument(Factory, ServiceProvider);

// This will give me a nullReferenceArguement. In details: Its ThisDocument = null; Factory = null; ServiceProvider = null;

Any Help will be highly appropriated.

Answer 4

Hi Nganou,

  Welcome to MSDN Forum Support.

  We're doing research on this issue. It might take some time before we get back to you.

  Sincerely,

  Jason Wang

---

Jason Wang [MSFT]
MSDN Community Support | Feedback to us

Answer 5

If I understand you correctly - "trying to view a document...in a wpf usercontrol document viewer" - what you're trying to do is not possible. VSTO customizations cannot run in an embedded environment (in any kind of control). They only work in a standalone Word (or Excel) application.

---

Cindy Meister, VSTO/Word MVP

Answer 6

Thank you Jason,

I'm patiently waiting.

Answer 7

OK Cindy, What are my options.