请问这个功能如何实现呢

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>无标题页</title> </head> <body> <form id="form1" runat="server"> <div> <asp:TextBox ID="TextBox1" runat="server" Height="173px" TextMode="MultiLine" Width="304px"></asp:TextBox><br /> <br /> <asp:Button ID="Button1" runat="server" Text="得到TXT文件" PostBackUrl="~/txt.ashx" /> </div> </form> </body> </html>

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; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } }

<%@ WebHandler Language="C#" Class="txt" %> using System; using System.Web; public class txt : IHttpHandler { public void ProcessRequest(HttpContext context) { string FullFileName = @"c:\1.txt"; System.IO.FileInfo DownloadFile = new System.IO.FileInfo(FullFileName); context.Response.Clear(); context.Response.ClearHeaders(); context.Response.Buffer = false; context.Response.ContentType = "application/octet-stream"; context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.UTF8)); context.Response.AppendHeader("Content-Length", DownloadFile.Length.ToString()); context.Response.WriteFile(DownloadFile.FullName); context.Response.Flush(); context.Response.End(); } public bool IsReusable { get { return false; } } }

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skyaspnet
数据结构(C)
等级:

发表于：2008-05-18 10:45:276楼得分:20

我改写了一下：

test.aspx:

HTML code


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        请输入文件名称:
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />
        <br />
        请输入内容:
        <br />
        <br />
        <asp:TextBox ID="TextBox1" runat="server" Height="192px" TextMode="MultiLine" Width="252px"></asp:TextBox>
        <br />
        <br />
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="生成下载文件" /></div>
    </form>
</body>
</html>

test.aspx.cs:

C# code


using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;

public partial class test : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void Button1_Click(object sender, System.EventArgs e)
    {
        try
        {

            string str = TextBox1.Text.ToString().Trim();
            

            byte[] buff = System.Text.Encoding.Unicode.GetBytes(str);
            //byte[] buff = System.Text.Encoding.UTF8.GetBytes(str); 

            byte[] outBuff = new byte[buff.Length + 2];

            // 使用文件流方式写入UniCode编码的doc文件。 
            byte[] mark = { 0xFF, 0xFE };
            outBuff[0] = mark[0];
            outBuff[1] = mark[1];

            for (int i = 0; i < buff.Length; i++)
            {
                outBuff[i + 2] = buff[i];
            }

            Context.Response.ContentType = "application/octet-stream";
            string fileName = TextBox2.Text.ToString().Trim();
            Context.Response.AddHeader("Content-Disposition", "attachment; filename=\"" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8) + "\"");

            Context.Response.AddHeader("Content-Length", outBuff.Length.ToString());
            Response.BufferOutput = true;
            Response.Clear();
            Context.Response.BinaryWrite(outBuff);
            Context.Response.End();




        }
        catch (Exception ex)
        {
            ex.ToString();
        }
        finally
        {

        }

    } 

}

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