求高手注释啊
// Create a 'WebRequest' object with the specified url. 
WebRequest myWebRequest = WebRequest.Create("http://www.contoso.com"); 

// Send the 'WebRequest' and wait for response.
WebResponse myWebResponse = myWebRequest.GetResponse(); 

// Obtain a 'Stream' object associated with the response object.
Stream ReceiveStream = myWebResponse.GetResponseStream();

Encoding encode = System.Text.Encoding.GetEncoding("utf-8");

  // Pipe the stream to a higher level stream reader with the required encoding format. 
StreamReader readStream = new StreamReader( ReceiveStream, encode );
Console.WriteLine("\nResponse stream received");
Char[] read = new Char[256];

  // Read 256 charcters at a time.  
int count = readStream.Read( read, 0, 256 );
  Console.WriteLine("HTML...\r\n");

while (count > 0) 
{
  // Dump the 256 characters on a string and display the string onto the console.
String str = new String(read, 0, count);
Console.Write(str);
count = readStream.Read(read, 0, 256);
}

  Console.WriteLine("");
  // Release the resources of stream object.
  readStream.Close();

  // Release the resources of response object.
  myWebResponse.Close(); 


------解决方案--------------------
创建一个WEB请求，将请求返回的页面以UTF-8字符串打印出来
------解决方案--------------------
你哪句不懂，发出来，不可能每句都给你注解吧。
------解决方案--------------------

C# code

        //根据url创建一个Http请求对象
        WebRequest myWebRequest = WebRequest.Create("http://www.contoso.com");
        //发送http请求，得到http响应
        WebResponse myWebResponse = myWebRequest.GetResponse();
        //从http响应对象中获取响应流
        Stream ReceiveStream = myWebResponse.GetResponseStream();
        //指定字节序列到字符的转换规则：用utf-8编码方案
        Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
        //根据转换规则、流对象，初始化流阅读器
        StreamReader readStream = new StreamReader(ReceiveStream, encode);
        //命令行输出一行文字：收到响应流
        Console.WriteLine("\nResponse stream received");
        //声明一个char型数组
        Char[] read = new Char[256];
        //用流阅读器读取前256个字符,放入字符数组read中
        int count = readStream.Read(read, 0, 256);
        //命令行输出一行文字
        Console.WriteLine("HTML...\r\n");
        //反复进行：命令行输出字符数组read的内容，并往下再读取256个字符，知道没有字符可读取为止
        while (count > 0)
        {
            String str = new String(read, 0, count);
            Console.Write(str);
            count = readStream.Read(read, 0, 256);
        }
        Console.WriteLine("");
        //关闭流阅读器及其对应的流
        readStream.Close();
        //关闭http响应对象占用的资源
        myWebResponse.Close();