C# 文件下载四方法
- C# code
using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.IO;public partial class _Default : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){}//TransmitFile实现下载protected void Button1_Click(object sender, EventArgs e){Response.ContentType = "application/x-zip-compressed";Response.AddHeader("Content-Disposition", "attachment;filename=z.zip");string filename = Server.MapPath("DownLoad/z.zip");Response.TransmitFile(filename);}//WriteFile实现下载protected void Button2_Click(object sender, EventArgs e){string fileName ="asd.txt";//客户端保存的文件名string filePath=Server.MapPath("DownLoad/aaa.txt");//路径FileInfo fileInfo = new FileInfo(filePath);Response.Clear();Response.ClearContent();Response.ClearHeaders();Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);Response.AddHeader("Content-Length", fileInfo.Length.ToString());Response.AddHeader("Content-Transfer-Encoding", "binary");Response.ContentType = "application/octet-stream";Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");Response.WriteFile(fileInfo.FullName);Response.Flush();Response.End();}//WriteFile分块下载protected void Button3_Click(object sender, EventArgs e){string fileName = "aaa.txt";//客户端保存的文件名string filePath = Server.MapPath("DownLoad/aaa.txt");//路径System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);if (fileInfo.Exists == true){const long ChunkSize = 102400;//100K 每次读取文件，只读取100K，这样可以缓解服务器的压力byte[] buffer = new byte[ChunkSize];Response.Clear();System.IO.FileStream iStream = System.IO.File.OpenRead(filePath);long dataLengthToRead = iStream.Length;//获取下载的文件总大小Response.ContentType = "application/octet-stream";Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName));while (dataLengthToRead > 0 && Response.IsClientConnected){int lengthRead = iStream.Read(buffer, 0, Convert.ToInt32(ChunkSize));//读取的大小Response.OutputStream.Write(buffer, 0, lengthRead);Response.Flush();dataLengthToRead = dataLengthToRead - lengthRead;}Response.Close();}}//流方式下载protected void Button4_Click(object sender, EventArgs e){string fileName = "aaa.txt";//客户端保存的文件名string filePath = Server.MapPath("DownLoad/aaa.txt");//路径//以字符流的形式下载文件FileStream fs = new FileStream(filePath, FileMode.Open);byte[] bytes = new byte[(int)fs.Length];fs.Read(bytes, 0, bytes.Length);fs.Close();Response.ContentType = "application/octet-stream";//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));Response.BinaryWrite(bytes);Response.Flush();Response.End();}}[解决办法]
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呵呵，牛人的一定要顶（经常看到这个头像出现）
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不错收藏了
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收藏了，谢谢
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什么情况？
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来看看
Response.End();造成很多问题，提示下载框显示后，页面不可以跳转
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帅气的代码！！！！
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和这个帖子一样么？？？
C# 文件下载四方法 - 沈威 - 博客园
我只看了个标题，呵呵
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一模一样。。。
楼主和 那个沈威 是一个人么？？？？
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怎么都是英语呀？
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掌声鼓励
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好东西
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看不懂
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牛人 顶起来 菜鸟有点不懂
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收藏了，谢谢~
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收藏。。。。