C# och webclient

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;
 
private void button1_Click(object sender, EventArgs e)
{
   textBox1.Text = "";
   string Uritext = "http://www.google.se";
   WebClient webClient = new WebClient();
   webClient.Headers.Add("Charset", "text/html; charset=UTF-8");
   webClient.Encoding = System.Text.Encoding.UTF8;
   Byte[] pageData = webClient.DownloadData(Uritext);
   string pageHtml = Encoding.UTF8.GetString(pageData);
   textBox1.Text=pageHtml;
}