Upload document from Local Machine to SharePoint 2013 Library using WebService

I have following code from http://ktskumar.wordpress.com/2009/03/03/upload-document-from-local-machine-to-sharepoint-library/ to upload a document to a sharepoint library using web services. I have added https://mysite.sharepoint.com/_vti_bin/Copy.asmx (this site is on sharepoint Online) as my service reference.

     //Copy WebService Settings
        string webUrl = "https://mySite.sharepoint.com";

        WSCopy.Copy copyService = new WSCopy.Copy();

        copyService.Url = webUrl + "/_vti_bin/copy.asmx";
        copyService.Credentials = System.Net.CredentialCache.DefaultCredentials;

        //Source and Destination Document URLs
        string sourceUrl = "http://localhost/Shared Documents/Sample.doc";
        string destinationUrl = "E:\\DocumentsSample.doc";

        //Variables for Reading metadata’s of a document
        WSCopy.FieldInformation fieldInfo = new WSCopy.FieldInformation();
        WSCopy.FieldInformation[] fieldInfoArray = { fieldInfo };
        WSCopy.CopyResult cResult1 = new WSCopy.CopyResult();
        WSCopy.CopyResult cResult2 = new WSCopy.CopyResult();
        WSCopy.CopyResult[] cResultArray = { cResult1, cResult2 };

        //Receive a Document Contents  into Byte array (filecontents)
        byte[] fileContents = new Byte[4096];
        uint copyresult = copyService.GetItem(sourceUrl, out fieldInfoArray, out fileContents);

        if (copyresult == 0)
        {
            Console.WriteLine("Document downloaded Successfully, and now it's getting saved in location " + destinationUrl);

            //Create a new file and write contents to that document
            FileStream fStream = new FileStream(destinationUrl, FileMode.Create, FileAccess.ReadWrite);
            fStream.Write(fileContents, 0, fileContents.Length);
            fStream.Close();

        }
        else
        {
            Console.WriteLine("Document Downloading gets failed...");
        }

        Console.Write("Press any key to exit...");
        Console.Read();

here WSCopy is the service reference and 'WSCopy.Copy' copy class is not found on my project. How can i resolve this or is there another way to achive my goal.