Ftp file transfer using webclient - GunagokulCSharp

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;


public partial class Default5 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

upload1(@"D:\Excel.txt");

}

private void upload1(string filename)
{
FileInfo fileInf = new FileInfo(filename);
System.Net.WebClient webClient = new System.Net.WebClient();
int buffLength = 2048;
byte[] buff = new bytebuffLength;
webClient.Credentials = new NetworkCredential("username", "password");
webClient.UploadData(new Uri("ftp://ipaddress/test/" + fileInf.Name), buff);


}
}