<pre lang="C#">using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
timer1.Enabled = true;
timer1.Interval = 60000;
}
private void timer1_Tick(object sender, EventArgs e)
{
button1_Click(null,null);
}
private void button1_Click(object sender, EventArgs e)
{
WebClient MyWebClient = new WebClient();
MyWebClient.Credentials = new NetworkCredential(&amp;amp;amp;quot;user&amp;amp;amp;quot;, &amp;amp;amp;quot;****&amp;amp;amp;quot;);
Byte[] PageHTMLBytes;
if (textBox1.Text != &amp;amp;amp;quot;&amp;amp;amp;quot;)
{
PageHTMLBytes = MyWebClient.DownloadData(textBox1.Text);
UTF8Encoding oUTF8 = new UTF8Encoding();
richTextBox1.Text = oUTF8.GetString(PageHTMLBytes);
}
}
}
}&amp;amp;lt;/pre&amp;amp;gt;&amp;lt;/pre&amp;gt;&lt;/pre&gt;</pre></pre>