.NET下获取网页的内容的封装类

      我写的一个在.NET下获取网页内容的类：

using System;
using System.Net;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace iUNS
{
    /// <summary>
    /// iuGetWebContent 的摘要说明。
    /// </summary>
    public class iuGetWebContent
    {
        public iuGetWebContent()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        /// <summary>
        /// 从指定的url取得网页内容
        /// </summary>
        /// <param name="url">网页地址</param>
        /// <returns>返回取得的内容</returns>
        public static string getContentFromUrl(string url,string encoding)
        {
            try
            {
                string text="";
                // Create a 'WebRequest' object with the specified url. 
                WebRequest myWebRequest = WebRequest.Create(url); 
                myWebRequest.Timeout=10000;

                // 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(encoding);

                // 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[512];

                // Read 512 charcters at a time.    
                int count = readStream.Read( read, 0, 512 );
                //Console.WriteLine("HTML\r\n");

                while (count > 0) 
                {
                    // Dump the 512 characters on a string and display the string onto the console.
                    String str = new String(read, 0, count);
                    text+=str;
                    count = readStream.Read(read, 0, 512);
                }

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

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

                return text;
            }
            catch
            {
                return "MYERROR";
            }
        }
    }
}