using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Net;
using System.IO;

namespace testurl
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
string result = null;
var s = new StreamReader(WebRequest.Create("http://www.html.by/styles/forum.css").GetResponse().GetResponseStream(), Encoding.UTF8);
{
result = s.ReadToEnd();
}
textBox1.Text = result;
}
}
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Net;
using System.IO;

namespace testurl
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

public static void DownloadFile(string url, string toLocalPath)
{
WebRequest wr = WebRequest.Create(url);
WebResponse response = wr.GetResponse();

using (Stream responseStream = response.GetResponseStream())
using (FileStream fs = new FileStream(toLocalPath, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
byte[] buffer = new byte[4096];

do
{
int count = responseStream.Read(buffer, 0, buffer.Length);
if (count == 0) break;
fs.Write(buffer, 0, count);
} while (true);

fs.Flush();
}
}

private void button1_Click(object sender, EventArgs e)
{
DownloadFile("http://download.utorrent.com/2.2/utorrent.exe", "c:\\utorrent.exe");
}
}
}