Uploading a document to a document library

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
using System.Xml;
using MySite;
using System.Text;
public partial class Add_New_Document : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnUpload_Click(object sender, EventArgs e)
    {
        
        

        //Create a filestream containing the document you want to upload

    FileStream oSourceFile = File.OpenRead(fuBrowse.PostedFile.FileName);

  //Create a webrequest pointing to the site and document library you want to

     //upload the document to. In addition specify the document name
         string strOnlyFile = fuBrowse.PostedFile.FileName;

        //onlyFile=onlyFile.Substring
        strOnlyFile = strOnlyFile.Substring((fuBrowse.PostedFile.FileName).LastIndexOf(@"\") + 1);
        string strCompleteFile="http://agmsm:9999/sites/mnet/venkat/UserPages/"+strOnlyFile;
     WebRequest oWr = WebRequest.Create(strCompleteFile);

     oWr.Method = "PUT";

     oWr.Headers.Add("Overwrite", "F");

     //oWr.Timeout = Timeout.Infinite;

   oWr.Credentials = CredentialCache.DefaultCredentials;

    

    //Literally copy the bytes of the filestream into the request stream to "upload" the document to the library

  byte[] oBytes = new byte[1024];

  using (Stream oRq = oWr.GetRequestStream())

  {

           for (; ; )

           {

               int iBytes = oSourceFile.Read(oBytes, 0, oBytes.Length);

               if (iBytes <= 0)

                  break;

               oRq.Write(oBytes, 0, iBytes);

          }

           oSourceFile.Close();

    }

    WebResponse oResponse = oWr.GetResponse();

    

    //Now create the XML to submit to the list service web service

    StringBuilder oSb = new StringBuilder();

    oSb.Append("<Method ID='1' Cmd='Update'>");

    oSb.Append("  <Field Name='ID'/>");

    oSb.Append("  <Field Name='FileRef'>"+strCompleteFile+"</Field>");

    //Change the title of the document - replace or add to the document properties as necessary

    oSb.Append("  <Field Name='Title'>New Title</Field>");

    oSb.Append("</Method>");

    

    XmlDocument oDoc = new System.Xml.XmlDocument();

    XmlElement oXBatch = oDoc.CreateElement("Batch");

    oXBatch.SetAttribute("OnError", "Continue");

    oXBatch.SetAttribute("PreCalc", "TRUE");

    oXBatch.SetAttribute("ListVersion", "0");

    oXBatch.InnerXml = oSb.ToString();

    

    //Do the update replace the ListWebService object with your web service object

    MySite.Lists oLstSvc = new MySite.Lists();

    oLstSvc.Credentials = CredentialCache.DefaultNetworkCredentials;

    XmlNode oRet = oLstSvc.UpdateListItems("UserPages", oXBatch);
    Page.RegisterClientScriptBlock("alert", "<Script language='Javascript'>alert('Document Uploaded Successfully');</Script>");
        
    }
}