保存网页图片到本地硬盘!!

    protected void Button1_Click(object sender, EventArgs e)
    {
        string FileName="D:\\picture\\1.gif";
        string Url = "http://images.163.com/images/netease/vip/20080402/300x194.jpg";
        SavePhotoFromUrl(FileName, Url);

    }


    /**//// <summary>
    /// 从图片地址下载图片到本地磁盘
    /// </summary>
    /// <param name="ToLocalPath">图片本地磁盘地址</param>
    /// <param name="Url">图片网址</param>
    /// <returns></returns>
    public static bool SavePhotoFromUrl(string FileName, string Url)
    {
        bool Value = false;
        WebResponse response = null;
        Stream stream = null;

        try
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

            response = request.GetResponse();
            stream = response.GetResponseStream();

            if (!response.ContentType.ToLower().StartsWith("text/"))
            {
                Value = SaveBinaryFile(response, FileName);

            }

        }
        catch (Exception err)
        {
            string aa = err.ToString();
        }
        return Value;
    }
    /**//// <summary>
    /// Save a binary file to disk.
    /// </summary>
    /// <param name="response">The response used to save the file</param>
    // 将二进制文件保存到磁盘
    private static bool SaveBinaryFile(WebResponse response, string FileName)
    {
        bool Value = true;
        byte[] buffer = new byte[1024];

        try
        {
            if (File.Exists(FileName))
                File.Delete(FileName);
            Stream outStream = System.IO.File.Create(FileName);
            Stream inStream = response.GetResponseStream();

            int l;
            do
            {
                l = inStream.Read(buffer, 0, buffer.Length);
                if (l > 0)
                    outStream.Write(buffer, 0, l);
            }
            while (l > 0);

            outStream.Close();
            inStream.Close();
        }
        catch
        {
            Value = false;
        }
        return Value;
    }