87 lines
2.5 KiB
C#
87 lines
2.5 KiB
C#
using BLL;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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namespace FineUIPro.Web
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{
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public partial class FileDown : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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}
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protected void butDown_Click(object sender, EventArgs e)
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{
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if (txtFileName.Text != "")
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{
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download(txtFileName.Text.Trim());
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}
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else
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{
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Alert.Show("请输入下载的文件名！");
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}
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}
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private void download(string fileName)
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{
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System.IO.Stream iStream = null;
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byte[] buffer = new Byte[10000];//设置大小
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int length;
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long dataToRead;
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string rootPath = Server.MapPath("~/") + "FileUpload\\HJGL\\";
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string filepath = rootPath + fileName;//文件的路径
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string filename = System.IO.Path.GetFileName(filepath);
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try
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{
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iStream = new System.IO.FileStream(filepath, FileMode.Open, FileAccess.Read);
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dataToRead = iStream.Length;
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Response.Clear();
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Response.ClearHeaders();
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Response.ClearContent();
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Response.ContentType = "application/unknow";
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Response.AddHeader("Content-Length", dataToRead.ToString());
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Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);
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while (dataToRead > 0)
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{
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if (Response.IsClientConnected)
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{
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length = iStream.Read(buffer, 0, 10000);
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Response.OutputStream.Write(buffer, 0, length);
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Response.Flush();
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buffer = new Byte[10000];
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dataToRead = dataToRead - length;
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}
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else
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{
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dataToRead = -1;
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}
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}
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}
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catch (Exception ex)
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{
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Response.Write("Error : " + ex.Message);
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}
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finally
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{
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if (iStream != null)
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{
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iStream.Close();
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}
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Response.End();
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}
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}
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}
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} |