请问这个功能如何实现呢

dnvvj 2008-05-17 05:36:02

页面上一个输入信息的地方你输入一篇文章，点提交后，在文章内容保存到数据库后，同时把刚才输入的文字转成txt 然后弹出下载框之后就能下载了。请问具体应该如何实现呢

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txgaozhao 2008-05-18

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事物处理起来很复杂

skyaspnet 2008-05-18

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我改写了一下：

test.aspx:



<%@ 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:



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

        {



        }



    } 



}

skyaspnet 2008-05-17

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default.aspx:

<%@ 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>

default.aspx.cs:

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)

    {

        

    }

}

txt.ashx:

<%@ 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;

        }

    }



}