下载啊,不要把别人的源代码往上贴了 谢谢

Question

public void DownLoad(string url)
         {
        string filePath = url;//这里注意了,你得指明要下载文件的路径.        if (System.IO.File.Exists(filePath))
        {
            System.IO.FileInfo file = new System.IO.FileInfo(filePath);
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码
            Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name)); //解决中文文件名乱码    
            Response.AddHeader("Content-length", file.Length.ToString());
            Response.ContentType = "appliction/octet-stream";
            Response.WriteFile(file.FullName);
            Response.End();
        }
        }
这是下载的代码可是怎么和我们想的不一样，应该点一下，然后叫我选择存放目录啊，上面传的url是我想下载的文件的根目录  这到底是怎么弄啊  高人帮我解释一下

Answer 1

http://www.cnblogs.com/jxyxhz/archive/2008/08/22/1274273.html
看看浩明的blog

Answer 2

我用我的那个代码，到最后会弹出一个对话框，说  下载的那个 txt文件内容 附近有错误   一大堆

Answer 3

什么不一样，是说弹出一个保存文件框?下载页面：
 <a href="download.ashx?url=<%=Server.UrlEncode("说明.txt")%>">下载</a>
------------------------------------------------------------------------------
download.ashx<%@ WebHandler Language="C#" Class="download" %>
using System;
using System.Web;
public class download : IHttpHandler {
   
    public void ProcessRequest (HttpContext context) {
        string url = HttpContext.Current.Server.UrlDecode(context.Request.QueryString["url"]);
        downloadfile(url);
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }
    public void downloadfile(string s_fileName)
    {
       HttpContext.Current.Response.ContentType = "application/ms-download";
       string s_path = HttpContext.Current.Server.MapPath("~/") + s_fileName;
       System.IO.FileInfo file = new System.IO.FileInfo(s_path);
       HttpContext.Current.Response.Clear();
       HttpContext.Current.Response.AddHeader("Content-Type", "application/octet-stream");
       HttpContext.Current.Response.Charset = "utf-8";
       HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));
       HttpContext.Current.Response.AddHeader("Content-Length", file.Length.ToString());
       HttpContext.Current.Response.WriteFile(file.FullName);
       HttpContext.Current.Response.Flush();
       HttpContext.Current.Response.Clear();
       HttpContext.Current.Response.End();
    }
}