去URL指定的图片的大小（字节）

Question

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Data;using System.IO;
using System.Net;
public partial class zzzzz : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }    protected void Button1_Click1(object sender, EventArgs e)
    {
        try
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.gpssz.com/picture/2000147717/20070924155755.jpg");
            WebResponse response = request.GetResponse();
            Stream stream = response.GetResponseStream();
            byte[] buffer = new byte[1024];            if (!response.ContentType.ToLower().StartsWith("text/"))
            {
                try
                {
                    Stream outStream = new MemoryStream();
                    Stream inStream = response.GetResponseStream();                    int bufferLength;
                    do
                    {
                        bufferLength = inStream.Read(buffer, 0, buffer.Length);
                        if (bufferLength > 0)
                            outStream.Write(buffer, 0, bufferLength);
                    }
                    while (bufferLength > 0);                    outStream.Flush();
                    outStream.Seek(0, SeekOrigin.Begin);
                    inStream.Close();                    Image image = Image.FromStream(outStream);
                    Response.Write(image.GetPropertyItem(0).Len);
                    outStream.Close();
                    Response.Write("image :=" + image.Width + "X" + image.Height);
                    image.Dispose();
                }
                catch (Exception ex)
                {
                    Response.Write("非图像格式\r\n" + ex.Message);
                }
            }
            else
            {
                Response.Write("非图像格式");
            }
        }
        catch
        {
            Response.Write("找不到文件！");
        }
    }
}

Answer 1

LZ可参考以下: HttpWebRequest Request = (HttpWebRequest)HttpWebRequest.Create(pImageUrl);
        Stream stream = Request.GetResponse().GetResponseStream();
        if (stream != null)
        {
            int buffersize = 1024 * 32;
            byte[] buffer = new byte[buffersize];
            int count = stream.Read(buffer, 0, buffersize);
            while (count > 0)
            {
                HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.OutputStream.Write(buffer, 0, count);
                count = stream.Read(buffer, 0, buffersize);
            }
            HttpContext.Current.Response.End();