c# 动态生成 文件下载

Question

客户端一次可上传多个文件，路径存储的数据库里，求在客户端如何实现下载多个文件。string[] strPathList = strPath.Split(';');
                int m = 0;
                for (int i = 0; i < strPathList.Length; i++)
                {
                    string filePath = "~" + strPathList[i].Remove(0, 2);
                    if (File.Exists(Server.MapPath(filePath)))
                    {
                        m++;
                        string fileName = Upload.getUpFileName(filePath, "//");
                        bufferName.Append("<a id='file"+ i.ToString() + "' runat='server' href='" + strPathList[i] + "' target='_blank' >" + m +"、"+fileName + "</a>");
                        bufferName.Append("<br />");
                    }
                }
                Div1.InnerHtml = bufferName.ToString();这里只是实现的超链接下载，有好的方法吗（真正的下载 DownLoadFile）？

Answer 1

public static void FileDownload(string FileName)
{
String FullFileName = System.Web.HttpContext.Current.Server.MapPath(FileName);
FileInfo DownloadFile = new FileInfo(FullFileName);
System.Web.HttpContext.Current.Response.Clear();
System.Web.HttpContext.Current.Response.ClearHeaders();
System.Web.HttpContext.Current.Response.Buffer = false;
System.Web.HttpContext.Current.Response.ContentType = "application/octet-stream";
System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.UTF8));
System.Web.HttpContext.Current.Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());
System.Web.HttpContext.Current.Response.WriteFile(DownloadFile.FullName);
System.Web.HttpContext.Current.Response.Flush();
System.Web.HttpContext.Current.Response.End();
} 

Answer 2

你理解错了，客户端相关的文件，点击下载，而文件控件是动态生成的，所以好像不可能调用FileDownload来下载文件。

Answer 3

 if (dr.Read())
        {
            string fname1 = dr["m_name"].ToString();
            string DownloadFileName = "~/upfile/" + fname1;
            string filepath = Server.MapPath(DownloadFileName);
            string filename = Path.GetFileName(filepath);
            FileInfo file = new FileInfo(filepath);
            Response.Clear();
            Response.ContentType = "application/octet-stream";
            Response.AddHeader("Content-Disposition", "attachment;     filename=" + HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8));
            Response.AddHeader("Content-length", file.Length.ToString());
            Response.Flush();
            Response.WriteFile(filepath);