how to programmatically (c#) find and replace in doc and docx file in share point library

My job is to do a find and replace in .doc and .docx files which are saved in sharepoint document library. i have to alter all the documents in the document library by doing find and replace. please help me in this...

Open XML formats are only for word 2007 (.docx). I need single solution that would do find and replace in both .doc and .docx files. The library also contains .ppt,.pptx a开发者_C百科nd excel sheets also..

I would recommend you to take a look at a third party tool from Aspose: http://www.aspose.com/categories/.net-components/aspose.words-for-.net/default.aspx

This supports both .doc and .docx, and they also have a similar product for PowerPoint. My experience with Aspose is that they are of high quality and easy to implement.

The best route to try is to look at "SharePoint Word Automation Services"

http://msdn.microsoft.com/en-us/library/ff742315.aspx

Below is an example from that link that should give you a good idea how to do this.

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

class Program
{
    static void Main(string[] args)
    {
        string siteUrl = "http://localhost";
        // If you manually installed Word automation services, then replace the name
        // in the following line with the name that you assigned to the service when
        // you installed it.
        string wordAutomationServiceName = "Word Automation Services";
        using (SPSite spSite = new SPSite(siteUrl))
        {
            ConversionJob job = new ConversionJob(wordAutomationServiceName);
            job.UserToken = spSite.UserToken;
            job.Settings.UpdateFields = true;
            job.Settings.OutputFormat = SaveFormat.PDF;
            job.AddFile(siteUrl + "/Shared%20Documents/Test.docx",
                siteUrl + "/Shared%20Documents/Test.pdf");
            job.Start();
        }
    }
}