求上传下载C#的源程序

Source: FtpSample.cs


Visual Basic  C++
J#
JScript
//---------------------------------------------------------------------
//  This file is part of the Microsoft .NET Framework SDK Code Samples.
//
//  Copyright (C) Microsoft Corporation.  All rights reserved.
//
//This source code is intended only as a supplement to Microsoft
//Development Tools and/or on-line documentation.  See these other
//materials for detailed information regarding Microsoft code samples.
//
//THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
//KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//PARTICULAR PURPOSE.
//---------------------------------------------------------------------#region Using directivesusing System;
using System.Text;
using System.IO;
using System.Net;
#endregionnamespace Microsoft.Samples.FtpSample
{
    static class Program
    {
        static void Main(string[] args)
        {
            if (args.Length == 0 || args[0].Equals("/?"))
            {
                DisplayUsage();
            }
            else if (args.Length == 1)
            {
                Download(args[0]);
            }
            else if (args.Length == 2)
            {
                if (args[0].Equals("/list"))
                    List(args[1]);
                else
                    Upload(args[0], args[1]);
            }
            else
            {
                Console.WriteLine("Unrecognized argument.");
            }
        }
        static void DisplayUsage()
        {
            Console.WriteLine("USAGE:");
            Console.WriteLine("    FtpSample [/? | <FTP download URL> | <local file>");
            Console.WriteLine("               <FTP upload URL> | /list <FTP list URL>]");
            Console.WriteLine();
            Console.WriteLine("where");
            Console.WriteLine("    FTP download URL   URL of a file to download from an FTP server.");
            Console.WriteLine("    FTP upload URL     Location on a FTP server to upload a file to.");
            Console.WriteLine("    FTP list URL       Location on a FTP server to list the contents of.");
            Console.WriteLine("    local file         A local file to upload to an FTP server.");
            Console.WriteLine();
            Console.WriteLine("    Options:");
            Console.WriteLine("        /?             Display this help message.");
            Console.WriteLine("        /list          Specifies the list command.");
            Console.WriteLine();
            Console.WriteLine("EXAMPLES:");
            Console.WriteLine("    Download a file    FtpSample ftp://myserver/download.txt");
            Console.WriteLine("    Upload a file      FtpSample upload.txt ftp://myserver/upload.txt");
        }        static void Download(string downloadUrl)
        {
            Stream responseStream = null;
            FileStream fileStream = null;
StreamReader reader = null;
try
{
FtpWebRequest downloadRequest =
(FtpWebRequest)WebRequest.Create(downloadUrl);
FtpWebResponse downloadResponse =
(FtpWebResponse)downloadRequest.GetResponse();
responseStream = downloadResponse.GetResponseStream(); string fileName =
Path.GetFileName(downloadRequest.RequestUri.AbsolutePath); if (fileName.Length == 0)
{
reader = new StreamReader(responseStream);
Console.WriteLine(reader.ReadToEnd());
}
else
{
fileStream = File.Create(fileName);
byte[] buffer = new byte[1024];
int bytesRead;
while (true)
{
bytesRead = responseStream.Read(buffer, 0, buffer.Length);
if (bytesRead == 0)
break;
fileStream.Write(buffer, 0, bytesRead);
}
}
Console.WriteLine("Download complete.");
}
catch (UriFormatException ex)
{
Console.WriteLine(ex.Message);
}
catch (WebException ex)
{
Console.WriteLine(ex.Message);
}
catch (IOException ex)
{
Console.WriteLine(ex.Message);
}
            finally
            {
if (reader != null)
reader.Close();
else if (responseStream != null)
                    responseStream.Close();
                if (fileStream != null)
                    fileStream.Close();
            }
        }        static void Upload(string fileName, string uploadUrl)
        {
            Stream requestStream = null;
            FileStream fileStream = null;
            FtpWebResponse uploadResponse = null;
try
{
FtpWebRequest uploadRequest =
(FtpWebRequest)WebRequest.Create(uploadUrl);
uploadRequest.Method = WebRequestMethods.Ftp.UploadFile; // UploadFile is not supported through an Http proxy
// so we disable the proxy for this request.
uploadRequest.Proxy = null; requestStream = uploadRequest.GetRequestStream();
fileStream = File.Open(fileName, FileMode.Open); byte[] buffer = new byte[1024];
int bytesRead;
while (true)
{
bytesRead = fileStream.Read(buffer, 0, buffer.Length);
if (bytesRead == 0)
break;
requestStream.Write(buffer, 0, bytesRead);
}

// The request stream must be closed before getting
// the response.
requestStream.Close(); uploadResponse =
(FtpWebResponse)uploadRequest.GetResponse();
Console.WriteLine("Upload complete.");
}
catch (UriFormatException ex)
{
Console.WriteLine(ex.Message);
}
catch (IOException ex)
{
Console.WriteLine(ex.Message);
}
catch (WebException ex)
{
Console.WriteLine(ex.Message);
}
            finally
            {
                if (uploadResponse != null)
                    uploadResponse.Close();
                if (fileStream != null)
                    fileStream.Close();
                if (requestStream != null)
                    requestStream.Close();
            }
        }        private static void List(string listUrl)
        {
            StreamReader reader = null;
            try
            {
                FtpWebRequest listRequest =
                    (FtpWebRequest)WebRequest.Create(listUrl);
                listRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                FtpWebResponse listResponse =
                    (FtpWebResponse)listRequest.GetResponse();
                reader = new StreamReader(listResponse.GetResponseStream());
                Console.WriteLine(reader.ReadToEnd());
                Console.WriteLine("List complete.");
            }
catch (UriFormatException ex)
{
Console.WriteLine(ex.Message);
}
            catch (WebException ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                if (reader != null)
                    reader.Close();
            }
        }
    }
}
文件上传我已下了一个学源程序:
<%@ Page language="c#" Codebehind="upfiles.aspx.cs" AutoEventWireup="false" Inherits="WebPortal.Upload" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>多文件上传</title>
<script language="JavaScript">
    function addFile()
    {
     var str = '<INPUT type="file" size="50" NAME="File">'
     document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)
    }
</script>
</HEAD>
<body>
<form id="form1" method="post" runat="server" enctype="multipart/form-data">
<div align="center">
<h3>多文件上传</h3>
<P id="MyFile"><INPUT type="file" size="50" NAME="File"></P>
<P>
<input type="button" value="增加(Add)" onclick="addFile()"> <input onclick="this.form.reset()" type="button" value="重置(ReSet)">
<asp:Button Runat="server" Text="开始上传" ID="UploadButton"></asp:Button>
</P>
<P>
<asp:Label id="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt" Width="500px"
BorderStyle="None" BorderColor="White"></asp:Label>
</P>
</div>
</form>
</body>
</HTML>
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;namespace WebPortal
{
/// <summary>
/// UpLoad 的摘要说明。
/// 实现多文件上传
/// </summary>
public class Upload : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button UploadButton;
protected System.Web.UI.WebControls.Label strStatus; private void Page_Load(object sender, System.EventArgs e)
{
/// 在此处放置用户代码以初始化页面
if (this.IsPostBack) this.SaveImages();
} private Boolean SaveImages()
{
///'遍历File表单元素
HttpFileCollection files  = HttpContext.Current.Request.Files; /// '状态信息
System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
strMsg.Append("上传的文件分别是：<hr color=red>");
try
{
for(int iFile = 0; iFile < files.Count; iFile++)
{
///'检查文件扩展名字
HttpPostedFile postedFile = files[iFile];
string fileName, fileExtension;
fileName = System.IO.Path.GetFileName(postedFile.FileName);
if (fileName != "")
{
fileExtension = System.IO.Path.GetExtension(fileName);
strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
strMsg.Append("上传文件的文件名：" + fileName + "<br>");
strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");
///'可根据扩展名字的不同保存到不同的文件夹
///注意：可能要修改你的文件夹的匿名写入权限。
postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images /") + fileName);
//postedFile.SaveAs("E:"+"\\"+temp+"\\"+fileName);
}
}
strStatus.Text = strMsg.ToString();
return true;
}
catch(System.Exception Ex)
{
strStatus.Text = Ex.Message;
return false;
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
} /// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.ID = "Upload";
this.Load += new System.EventHandler(this.Page_Load); }
#endregion
}
}但是如何在网面上显示下载的连接,还没有解决!怎么为啊????
实现下载的:http://spaces.msn.com/members/LeeBeen/Blog/cns!1pxpu9IKrNat_RYhjXO4m8ow!132.entry

调试易

求上传下载C#的源程序

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