C# winform 上傳文件 (多種方案)

C# winform 上傳文件 (多種方案)

轉:http://www.cnblogs.com/7in10/archive/2008/05/20/1203402.html

方案一:

注意:要開啓虛擬目錄的寫入權限,要不然就報 403 錯誤

工作中用到winform上傳文件(-_-!,很少用winform,搞了半天)
碰到一點問題,解決如下
1
501 爲實現錯誤
解決方法:
先把IISWEB服務擴展中的WebDev打開
然後
IIS
站點添加MIME  txt類型常見的MIME類型如下
超文本標記語言文本 .html,.html text/html
普通文本 .txt text/plain
RTF
文本 .rtf application/rtf
GIF
圖形 .gif p_w_picpath/gif
JPEG
圖形 .ipeg,.jpg p_w_picpath/jpeg
au
聲音文件 .au audio/basic
MIDI
音樂文件 mid,.midiaudio/midi,audio/x-midi
RealAudio
音樂文件 .ra, .ram audio/x-pn-realaudio
MPEG
文件 .mpg,.mpeg video/mpeg
AVI
文件 .avi video/x-msvideo
GZIP
文件 .gz application/x-gzip
TAR
文件 .tar application/x-tar
再然後
設置目標文件夾的可寫性

http://www.cnblogs.com/Images/OutliningIndicators/None.gifusing System;
http://www.cnblogs.com/Images/OutliningIndicators/None.gif
using System.Collections.Generic;
http://www.cnblogs.com/Images/OutliningIndicators/None.gif
using System.Text;
http://www.cnblogs.com/Images/OutliningIndicators/None.gif
using System.Net;
http://www.cnblogs.com/Images/OutliningIndicators/None.gif
using System.IO;
http://www.cnblogs.com/Images/OutliningIndicators/None.gif
http://www.cnblogs.com/Images/OutliningIndicators/None.gif
namespace Common
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
/**////<summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
/// winform形式的文件傳輸類
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif
///</summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifpublicclass WinFileTransporter
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gifhttp://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif/**////<summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
/// WebClient
上傳文件至服務器,默認不自動改名
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///</summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///<param name="fileNamePath">文件名,全路徑格式</param>
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif
///<param name="uriString">服務器文件夾路徑</param>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifpublicvoid UpLoadFile(string fileNamePath, string uriString)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gifhttp://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            UpLoadFile(fileNamePath, uriString, false);
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif/**////<summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
/// WebClient
上傳文件至服務器
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///</summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///<param name="fileNamePath">文件名,全路徑格式</param>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///<param name="uriString">服務器文件夾路徑</param>
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif
///<param name="IsAutoRename">是否自動按照時間重命名</param>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifpublicvoid UpLoadFile(string fileNamePath, string uriString, bool IsAutoRename)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gifhttp://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifstring fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifstring NewFileName = fileName;
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifif (IsAutoRename)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gifhttp://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf("."));
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifstring fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifif (uriString.EndsWith("/") == false) uriString = uriString + "/";
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            uriString = uriString + NewFileName;
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            Utility.LogWriter log = new Utility.LogWriter();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif//log.AddLog(uriString, "Log");
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            //log.AddLog(fileNamePath, "Log");
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
/**//**/
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif/**////
創建WebClient實例
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            WebClient myWebClient = new WebClient();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            myWebClient.Credentials = CredentialCache.DefaultCredentials;
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif//
要上傳的文件
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
           FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
//FileStream fs = OpenFile();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
           BinaryReader r = new BinaryReader(fs);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
byte[] postArray = r.ReadBytes((int)fs.Length);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            Stream postStream = myWebClient.OpenWrite(uriString,
"PUT");
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
try
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
//使用UploadFile方法可以用下面的格式
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                //myWebClient.UploadFile(uriString,"PUT",fileNamePath);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif

http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
if (postStream.CanWrite)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    postStream.Write(postArray,
0, postArray.Length);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    postStream.Close();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    fs.Dispose();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    log.AddLog(
"上傳日誌文件成功!", "Log");
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif                }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
else
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    postStream.Close();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    fs.Dispose();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                    log.AddLog(
"上傳日誌文件失敗,文件不可寫!", "Log");
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif                }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
catch (Exception err)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                postStream.Close();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                fs.Dispose();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
//Utility.LogWriter log = new Utility.LogWriter();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
               log.AddLog(err, "上傳日誌文件異常!", "Log");
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
throw err;
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
finally
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                postStream.Close();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                fs.Dispose();
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
/**//**/
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
/**////<summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///下載服務器文件至客戶端
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///</summary>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
///<param name="URL">被下載的文件地址,絕對路徑</param>
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif
///<param name="Dir">另存放的目錄</param>
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifpublicvoid Download(string URL, string Dir)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gifhttp://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif            WebClient client = new WebClient();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gifstring fileName = URL.Substring(URL.LastIndexOf("\\") + 1);  //
被下載的文件名
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif

http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
string Path = Dir + fileName;   //另存爲的絕對路徑+文件名
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
           Utility.LogWriter log = new Utility.LogWriter();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
try
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                WebRequest myre = WebRequest.Create(URL);
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
catch (Exception err)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
//MessageBox.Show(exp.Message,"Error");
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
               log.AddLog(err, "下載日誌文件異常!", "Log");
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
try
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                client.DownloadFile(URL, fileName);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                FileStream fs =
new FileStream(fileName, FileMode.Open, FileAccess.Read);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                BinaryReader r =
new BinaryReader(fs);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
byte[] mbyte = r.ReadBytes((int)fs.Length);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                FileStream fstr =
new FileStream(Path, FileMode.OpenOrCreate, FileAccess.Write);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                fstr.Write(mbyte,
0, (int)fs.Length);
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif                fstr.Close();
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
catch (Exception err)
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif
http://www.cnblogs.com/Images/dot.gif{
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
//MessageBox.Show(exp.Message,"Error");
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
               log.AddLog(err, "下載日誌文件異常!", "Log");
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif    }
http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif}



方案二:

轉:http://blog.csdn.net/walkinhill/archive/2004/08/28/87656.aspx

相信用ASP.NET寫一個上傳文件的網頁,大家都會寫,但是有沒有人想過通過在WinForm中通過HTTP協議上傳文件呢?

有些人說要向服務器端上傳文件,用FTP協議不是很簡單嗎?效率又高,爲什麼還要使用HTTP協議那麼麻煩呢?這裏面有幾個原因:

1FTP服務器的部署相對麻煩,還要設置權限,權限設置不對,還會惹來一系列的安全問題。

2)如果雙方都還有防火牆,又不想開發FTP相關的一些端口時,HTTP就會大派用場,就像WEB Services能穿透防火牆一樣。

3)其他的...,還在想呢...

但是使用HTTP也有他的一些問題,例如不能斷點續傳,大文件上傳很難,速度很慢,所以HTTP協議上傳的文件大小不應該太大。

說了這麼多,原歸正傳,一般來說,在Winform裏通過HTTP上傳文件有幾種可選的方法:

1)前面提到的Web Services,就是一種很好的方法,通過編寫一個WebMethod,包含有 byte[] 類型的參數,然後調用Web Services的方法,文件內容就會以Base64編碼傳到服務器上,然後重新保存即可。

[WebMethod]
public void UploadFile(byte[] content,string filename){
          Stream sw = newStreamWriter(...);
          sw.Close();
}
當然,這種通過Base64編碼的方法效率比較低,那麼可以採用WSE,支持附件,並以2進制形式傳送,效率會更高。
2)除了通過WebService,另外一種更簡單的方法就是通過WebClient或者HttpWebRequest來模擬HTTPPOST動作來實現。這時候首先需要編寫一個asp.net web form來響應上傳,代碼如下:
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs"AutoEventWireup="false" Inherits="UploadFileWeb.WebForm1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<html>
<head>
 <title>WebForm1</title>
 <meta name="GENERATOR" Content="Microsoft VisualStudio .NET 7.1">
 <meta name="CODE_LANGUAGE" Content="C#">
 <meta name="vs_defaultClientScript"content="JavaScript">
 <meta name="vs_targetSchema" content="
http://schemas.microsoft.com/intellisense/ie5">
</head>
<body>
 <form id="Form1" method="post"runat="server">
 </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;

namespaceUploadFileWeb
{
/// <summary>
/// WebForm1
的摘要說明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
 private void Page_Load(object sender, System.EventArgs e)
 {
  //
在此處放置用戶代碼以初始化頁面
  foreach( string f in Request.Files.AllKeys)
  {
   HttpPostedFile file = Request.Files[f];
   file.SaveAs(@"D:\Temp\" + file.FileName);
  }
  if( Request.Params["testKey"] != null )
  {
   Response.Write(Request.Params["testKey"]);
  }
 }

 #regionWeb 窗體設計器生成的代碼
 override protected void OnInit(EventArgs e)
 {
  //
  // CODEGEN:
該調用是 ASP.NET Web 窗體設計器所必需的。
  //
  InitializeComponent();
  base.OnInit(e);
 }

 /// <summary>
 ///
設計器支持所需的方法 -不要使用代碼編輯器修改
 ///
此方法的內容。
 /// </summary>
 private void InitializeComponent()
 {    
  this.Load += new System.EventHandler(this.Page_Load);
 }
 #endregion
}
}

其實這個頁面跟我們平常寫的asp.net上傳文件代碼是一樣的,在Web 頁的Request對象中包含有Files這個對象,裏面就包含了通過POST方式上傳的所有文件的信息,這時所需要做的就是調用Request.Files[i].SaveAs方法。

但是怎麼讓才能在WinForm裏面模擬想Web Form POST 數據呢?System.Net命名空間裏面提供了兩個非常有用的類,一個是WebClient,另外一個是HttpWebRequest類。如果我們不需要通過代理服務器來上傳文件,那麼非常簡單,只需要簡單的調用WebClient.UploadFile方法就能實現上傳文件:

private void button1_Click(object sender, System.EventArgs e)
 {
  WebClient myWebClient = new WebClient();

  myWebClient.UploadFile("
http://localhost/UploadFileWeb/WebForm1.aspx","POST",@"D:\Temp\Java\JavaStart\JavaStart2.exe");
      }

是不是覺得很簡單呢?確實就這麼簡單。

但是如果要通過代理服務器上傳又怎麼辦呢?那就需要使用到HttpWebRequest,但是該類沒有Upload方法,但是幸運的是我們通過Reflector反編譯了WebClient.UploadFile方法後,我們發現其內部也是通過WebRequest來實現的,代碼如下:
public byte[] UploadFile(string address,string method, string fileName)
{
     string text1;
     string text2;
     WebRequest request1;
     string text3;
     byte[] buffer1;
     byte[] buffer2;
     long num1;
     byte[] buffer3;
     int num2;
     WebResponse response1;
     byte[] buffer4;
     DateTime time1;
     long num3;
     string[] textArray1;
     FileStream stream1 = null;
     try
     {
           fileName =Path.GetFullPath(fileName);
           time1 =DateTime.Now;
           num3 =time1.Ticks;
           text1 ="---------------------" + num3.ToString("x");
           if (this.m_headers== null)
           {
                this.m_headers = new WebHeaderCollection();
           }
           text2 =this.m_headers["Content-Type"];
           if (text2 !=null)
           {
                if (text2.ToLower(CultureInfo.InvariantCulture).StartsWith("multipart/"))
                {
                      throw new WebException(SR.GetString("net_webclient_Multipart"));
                }
           }
           else
           {
                text2 = "application/octet-stream";
           }
          this.m_headers["Content-Type"] = "multipart/form-data;boundary=" + text1;
          this.m_responseHeaders = null;
           stream1 =new FileStream(fileName, FileMode.Open, FileAccess.Read);
           request1 =WebRequest.Create(this.GetUri(address));
          request1.Credentials = this.Credentials;
          this.CopyHeadersTo(request1);
          request1.Method = method;
           textArray1 =new string[7];
          textArray1[0] = "--";
          textArray1[1] = text1;
          textArray1[2] = "\r\nContent-Disposition: form-data;name=\"file\"; filename=\"";
          textArray1[3] = Path.GetFileName(fileName);
          textArray1[4] = "\"\r\nContent-Type: ";
           textArray1[5]= text2;
          textArray1[6] = "\r\n\r\n";
           text3 =string.Concat(textArray1);
           buffer1 =Encoding.UTF8.GetBytes(text3);
           buffer2 =Encoding.ASCII.GetBytes("\r\n--" + text1 + "\r\n");
           num1 =9223372036854775807;
           try
           {
                num1 = stream1.Length;
                request1.ContentLength = ((num1 + ((long) buffer1.Length)) + ((long)buffer2.Length));
           }
           catch
           {
           }
           buffer3 =new byte[Math.Min(((int) 8192), ((int) num1))];
           using(Stream stream2 = request1.GetRequestStream())
           {
                stream2.Write(buffer1, 0, buffer1.Length);
                do
                {
                      num2 = stream1.Read(buffer3, 0, buffer3.Length);
                      if (num2 != 0)
                      {
                            stream2.Write(buffer3, 0, num2);
                      }
                }
                while ((num2 != 0));
                stream2.Write(buffer2, 0, buffer2.Length);
           }
          stream1.Close();
           stream1 =null;
           response1 =request1.GetResponse();
          this.m_responseHeaders = response1.Headers;
           returnthis.ResponseAsBytes(response1);
     }
     catch (Exception exception1)
     {
           if (stream1!= null)
           {
                stream1.Close();
                stream1 = null;
           }
           if((exception1 is WebException) || (exception1 is SecurityException))
           {
                throw;
           }
           throw newWebException(SR.GetString("net_webclient"), exception1);
     }
     return buffer4;
}


在這段代碼裏面其實最關鍵的就是如何模擬POST請求,通過分析代碼和監視HTTP,我們可以發現模擬的POST格式如下:

-----------------------8c64f47716481f0  //
時間戳

Content-Disposition:form-data; name="file"; filename="a.txt"  //文件名

Content-Type: application/octet-stream


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