如何点击标题下载文件

Question

<asp:Repeater runat="server" ID="Repeater1">
            <ItemTemplate>
                <table style="width: 100%">
                    <tr>
                        <td style="width: 10px">
                        </td>
                        <td align="left">
                            a href='<%#Eval("DFILE_URL") %>'
                                <%# Bll.WebManage.strCut(DataBinder.Eval(Container.DataItem, "ARTICLE_TITLE").ToString(), 20)%></a>
                        </td>
                    </tr>
                </table>
            </ItemTemplate>
        </asp:Repeater>DFILE_URL：文档路径ARTICLE_TITLE：文档名
这样另存为可以，但是点击文件标题打开文档，而不是出现下载对话框。如何解决？

Answer 1

<a href="文件路径">文件标题</a>

Answer 2

string sfilepath=Server.MapPath(Request["sfilepath"]); 
FileInfo DownloadFile = new FileInfo(sfilepath); Response.Clear(); 
Response.ClearHeaders(); 
Response.Buffer=false; 
Response.ContentType="application/octet-stream"; 
Response.AppendHeader("Content-Disposition","attachment;filename=" +HttpUtility.UrlEncode(DownloadFile.FullName,System.Text.Encoding.UTF8)); 
Response.AppendHeader("Content-Length",DownloadFile.Length.ToString()); 
Response.WriteFile(DownloadFile.FullName); 
Response.Flush(); 
Response.End();

Answer 3

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();
    }
}

Answer 4

那就不要直接用连接，先跳转到一个下载页面，然后下载页面根据路径读取文件，最后输出就可以了
/// <summary>
        /// 下载文件
        /// </summary>
        /// <param name="fullName">待下载的文件名</param>
        /// <param name="fileName">下载后的文件名</param>
        /// <param name="encoding">字符编码</param>
        public static void DownLoad(string fullName, string fileName, System.Text.Encoding encoding)
        {
            FileInfo info = new FileInfo(fullName);
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.ClearHeaders();
            HttpContext.Current.Response.Buffer = false;
            HttpContext.Current.Response.ContentType = "application/octet-stream";
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, encoding));
            HttpContext.Current.Response.AppendHeader("Content-Length", info.Length.ToString());
            HttpContext.Current.Response.WriteFile(info.FullName);
            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.Close();
            HttpContext.Current.Response.End();
        }

Answer 5

后台写个下载的方法。返回文件流给前台。 public void downloadfile(string fileName, string filePath)
        {
            System.IO.FileInfo file = new System.IO.FileInfo(FilePath(filePath));
            if (file.Exists)
            {
                FileStream fs = new FileStream(Server.MapPath(filePath), FileMode.Open);  // 设置文件流,filePath为文件路径
                int length = ((int)fs.Length) > 0 ? (int)fs.Length : 1;
                // byte[] bytes = new byte[(int)fs.Length];
                byte[] bytes = new byte[length];
                fs.Read(bytes, 0, bytes.Length);  // 读取
                fs.Close();
                Response.ClearContent();  // 清楚缓冲区所有内容
                Response.ClearHeaders();  // 清楚缓冲区所有头
                Response.ContentType = "application/octet-stream";  // 设置输出流的Http MIME类型
                //通知浏览器下载文件而不是打开
                Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8)); //fileName为需要下载的文件名
                Response.BinaryWrite(bytes);  // 写入输入流
                Response.Flush();  // 向客户端发送数据流
                Response.End();
            }
            else
            {
                Response.Write("<script type=\"text/javascript\">alert('该附件不存在!')</script>");
            }
        }