日期:2014-05-17  浏览次数:20900 次

asp.net中实现文件下载功能
//TransmitFile实现下载
protected void Button1_Click(object sender, EventArgs e)
{
/*
微软为Response对象提供了一个新的方法TransmitFile来解决使用Response.BinaryWrite
下载超过400mb的文件时导致Aspnet_wp.exe进程回收而无法成功下载的问题。
代码如下:
*/

Response.ContentType
= "application/x-zip-compressed";
Response.AddHeader(
"Content-Disposition", "attachment;filename=z.zip");
string filename = Server.MapPath("DownLoad/aaa.zip");
Response.TransmitFile(filename);
}

//WriteFile实现下载
protected void Button2_Click(object sender, EventArgs e)
{
/*
using System.IO;

*/

string fileName ="aaa.zip";//客户端保存的文件名
string filePath=Server.MapPath("DownLoad/aaa.zip");//路径

FileInfo fileInfo
= new FileInfo(filePath);
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader(
"Content-Disposition