How to convert docx to doc document in SharePoint 2010 using Word Automation Services

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Word Automation Services is a new feature available in SharePoint 2010. It supports converting Word documents to other formats.

This article describes the following steps to show how to call the Word Automation Services to convert a document:

Add a word document to the SharePoint Shared Documents.
Create a console Application.
Add a reference to the Microsoft.Office.Word.Server assembly.

Add a word document in the Shared Documents:

Create a console application:

Open Visual Studio 2010.

Go to File => New => Project.

Select the Console Application template and enter the Name.

Click Ok.

Add a reference to the Microsoft.Office.Word.Server assembly(C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\ISAPI\ Microsoft.Office.Word.Server.dll)

Open Program.cs file and replace the code with the following one.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Office.Word.Server.Conversions;
using Microsoft.SharePoint;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            using (SPSite spSite = new SPSite( "http://servername:4040/"))
            {
           //Defines a collection of settings for all conversions within a single conversion job.
                ConversionJobSettings jobSettings=new ConversionJobSettings();
                jobSettings.OutputFormat = SaveFormat.Document97;
               //Represents a collection of file conversions (of single files or entire libraries) that share a common set of conversion properties and are logically
tracked as a single unit.
                ConversionJob pdfConversion = new ConversionJob("Word Automation Services", jobSettings);
                // Set the credentials to use when running the conversion job.
                pdfConversion.UserToken = spSite.UserToken;
                pdfConversion.AddFile("http://servername:4040/Shared%20Documents/ExternalList.docx",
                    "http://servername:4040/Shared%20Documents/ExternalList.doc");
                pdfConversion.Start();
            }
        }

    }
}