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      vb.netftp訪問 vb ftp
      
                                            
      
                                            
      
                                                
            
      vb.net2008如何操作FTP服務(wù)器?比如登錄并保持登錄狀態(tài)，然后遍歷根目錄及指定的目錄，以獲
      具體方法如下：”、打開Serv－U的配置管理界面puzb在“全局用戶”或者“域用戶”中選擇“創(chuàng)建cgko修改和刪除用戶帳戶”；　2、在“創(chuàng)建，修改和刪除用戶帳戶”的界面，選擇“添加”。；3、在“用戶屬性“對話框，“用戶信息”下的用戶名為：Anonymous，密碼為空，為其指定FTP的根目錄。　4、然后在“目錄訪問“選項，點擊“添加”，為其指定訪問權(quán)限和目錄。　5、最后點擊“保存”6這樣我們就成功添加了匿名用戶。
      目前創(chuàng)新互聯(lián)公司已為上千的企業(yè)提供了網(wǎng)站建設(shè)、域名、網(wǎng)絡(luò)空間、成都網(wǎng)站托管、企業(yè)網(wǎng)站設(shè)計、思茅網(wǎng)站維護等服務(wù)，公司將堅持客戶導(dǎo)向、應(yīng)用為本的策略，正道將秉承"和諧、參與、激情"的文化，與客戶和合作伙伴齊心協(xié)力一起成長，共同發(fā)展。
      跪求VB.NET 連接FTP
      Imports System.Net
      Imports System.IO
      Module FtpSample
      Sub Main(ByVal args() As String)
      If args.Length = 0 OrElse args(0).Equals("/?") Then
      DisplayUsage()
      ElseIf args.Length = 1 Then
      Download(args(0))
      ElseIf args.Length = 2 Then
      If args(0).Equals("/list") Then
      List(args(1))
      Else
      Upload(args(0), args(1))
      End If
      Else
      Console.WriteLine("Unrecognized argument.")
      End If
      End Sub
      Private Sub 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 ")
      Console.WriteLine("    Upload a file      FtpSample upload.txt ")
      End Sub
      Private Sub Download(ByVal downloadUrl As String)
      Dim responseStream As Stream = Nothing
      Dim fileStream As FileStream = Nothing
      Dim reader As StreamReader = Nothing
      Try
      Dim downloadRequest As FtpWebRequest = _
      WebRequest.Create(downloadUrl)
      Dim downloadResponse As FtpWebResponse = _
      downloadRequest.GetResponse()
      responseStream = downloadResponse.GetResponseStream()
      Dim fileName As String = _
      Path.GetFileName(downloadRequest.RequestUri.AbsolutePath)
      If fileName.Length = 0 Then
      reader = New StreamReader(responseStream)
      Console.WriteLine(reader.ReadToEnd())
      Else
      fileStream = File.Create(fileName)
      Dim buffer(1024) As Byte
      Dim bytesRead As Integer
      While True
      bytesRead = responseStream.Read(buffer, 0, buffer.Length)
      If bytesRead = 0 Then
      Exit While
      End If
      fileStream.Write(buffer, 0, bytesRead)
      End While
      End If
      Console.WriteLine("Download complete.")
      Catch ex As UriFormatException
      Console.WriteLine(ex.Message)
      Catch ex As WebException
      Console.WriteLine(ex.Message)
      Catch ex As IOException
      Console.WriteLine(ex.Message)
      Finally
      If reader IsNot Nothing Then
      reader.Close()
      ElseIf responseStream IsNot Nothing Then
      responseStream.Close()
      End If
      If fileStream IsNot Nothing Then
      fileStream.Close()
      End If
      End Try
      End Sub
      Private Sub Upload(ByVal fileName As String, ByVal uploadUrl As String)
      Dim requestStream As Stream = Nothing
      Dim fileStream As FileStream = Nothing
      Dim uploadResponse As FtpWebResponse = Nothing
      Try
      Dim uploadRequest As FtpWebRequest = WebRequest.Create(uploadUrl)
      uploadRequest.Method = WebRequestMethods.
      ' UploadFile is not supported through an Http proxy
      ' so we disable the proxy for this request.
      uploadRequest.Proxy = Nothing
      requestStream = uploadRequest.GetRequestStream()
      fileStream = File.Open(fileName, FileMode.Open)
      Dim buffer(1024) As Byte
      Dim bytesRead As Integer
      While True
      bytesRead = fileStream.Read(buffer, 0, buffer.Length)
      If bytesRead = 0 Then
      Exit While
      End If
      requestStream.Write(buffer, 0, bytesRead)
      End While
      ' The request stream must be closed before getting the response.
      requestStream.Close()
      uploadResponse = uploadRequest.GetResponse()
      Console.WriteLine("Upload complete.")
      Catch ex As UriFormatException
      Console.WriteLine(ex.Message)
      Catch ex As IOException
      Console.WriteLine(ex.Message)
      Catch ex As WebException
      Console.WriteLine(ex.Message)
      Finally
      If uploadResponse IsNot Nothing Then
      uploadResponse.Close()
      End If
      If fileStream IsNot Nothing Then
      fileStream.Close()
      End If
      If requestStream IsNot Nothing Then
      requestStream.Close()
      End If
      End Try
      End Sub
      Private Sub List(ByVal listUrl As String)
      Dim reader As StreamReader = Nothing
      Try
      Dim listRequest As FtpWebRequest = WebRequest.Create(listUrl)
      listRequest.Method = WebRequestMethods.
      Dim listResponse As FtpWebResponse = listRequest.GetResponse()
      reader = New StreamReader(listResponse.GetResponseStream())
      Console.WriteLine(reader.ReadToEnd())
      Console.WriteLine("List complete.")
      Catch ex As UriFormatException
      Console.WriteLine(ex.Message)
      Catch ex As WebException
      Console.WriteLine(ex.Message)
      Finally
      If reader IsNot Nothing Then
      reader.Close()
      End If
      End Try
      End Sub
      End Module
      可以通過設(shè)置 Credentials 屬性來指定用于連接服務(wù)器的憑據(jù)，也可以將它們包含在傳遞給 Create 方法的 URI 的 UserInfo 部分中。
      從 FTP 服務(wù)器下載文件時，如果命令成功，所請求的文件的內(nèi)容即在響應(yīng)對象的流中。通過調(diào)用 GetResponseStream 方法，可以訪問此流。
      如果使用 FtpWebRequest 對象向服務(wù)器上載文件，則必須將文件內(nèi)容寫入請求流，請求流是通過調(diào)用 GetRequestStream 方法或其異步對應(yīng)方法（BeginGetRequestStream 和 EndGetRequestStream 方法）獲取的。必須寫入流并在發(fā)送請求之前關(guān)閉該流。
      請求是通過調(diào)用 GetResponse 方法或其異步對應(yīng)方法（BeginGetResponse 和 EndGetResponse 方法）發(fā)送到服務(wù)器的。請求的操作完成時，會返回一個 FtpWebResponse 對象。FtpWebResponse 對象提供操作的狀態(tài)以及從服務(wù)器下載的所有數(shù)據(jù)。
      VB.net連接FTP操作
      MSDN上的，看看對你有沒有幫助。GOOD LUCK!
      Imports System.Net
      Imports System.IO
      Module FtpSample
      Sub Main(ByVal args() As String)
      If args.Length = 0 OrElse args(0).Equals("/?") Then
      DisplayUsage()
      ElseIf args.Length = 1 Then
      Download(args(0))
      ElseIf args.Length = 2 Then
      If args(0).Equals("/list") Then
      List(args(1))
      Else
      Upload(args(0), args(1))
      End If
      Else
      Console.WriteLine("Unrecognized argument.")
      End If
      End Sub
      Private Sub 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 ")
      Console.WriteLine("    Upload a file      FtpSample upload.txt ")
      End Sub
      Private Sub Download(ByVal downloadUrl As String)
      Dim responseStream As Stream = Nothing
      Dim fileStream As FileStream = Nothing
      Dim reader As StreamReader = Nothing
      Try
      Dim downloadRequest As FtpWebRequest = _
      WebRequest.Create(downloadUrl)
      Dim downloadResponse As FtpWebResponse = _
      downloadRequest.GetResponse()
      responseStream = downloadResponse.GetResponseStream()
      Dim fileName As String = _
      Path.GetFileName(downloadRequest.RequestUri.AbsolutePath)
      If fileName.Length = 0 Then
      reader = New StreamReader(responseStream)
      Console.WriteLine(reader.ReadToEnd())
      Else
      fileStream = File.Create(fileName)
      Dim buffer(1024) As Byte
      Dim bytesRead As Integer
      While True
      bytesRead = responseStream.Read(buffer, 0, buffer.Length)
      If bytesRead = 0 Then
      Exit While
      End If
      fileStream.Write(buffer, 0, bytesRead)
      End While
      End If
      Console.WriteLine("Download complete.")
      Catch ex As UriFormatException
      Console.WriteLine(ex.Message)
      Catch ex As WebException
      Console.WriteLine(ex.Message)
      Catch ex As IOException
      Console.WriteLine(ex.Message)
      Finally
      If reader IsNot Nothing Then
      reader.Close()
      ElseIf responseStream IsNot Nothing Then
      responseStream.Close()
      End If
      If fileStream IsNot Nothing Then
      fileStream.Close()
      End If
      End Try
      End Sub
      Private Sub Upload(ByVal fileName As String, ByVal uploadUrl As String)
      Dim requestStream As Stream = Nothing
      Dim fileStream As FileStream = Nothing
      Dim uploadResponse As FtpWebResponse = Nothing
      Try
      Dim uploadRequest As FtpWebRequest = WebRequest.Create(uploadUrl)
      uploadRequest.Method = WebRequestMethods.
      ' UploadFile is not supported through an Http proxy
      ' so we disable the proxy for this request.
      uploadRequest.Proxy = Nothing
      requestStream = uploadRequest.GetRequestStream()
      fileStream = File.Open(fileName, FileMode.Open)
      Dim buffer(1024) As Byte
      Dim bytesRead As Integer
      While True
      bytesRead = fileStream.Read(buffer, 0, buffer.Length)
      If bytesRead = 0 Then
      Exit While
      End If
      requestStream.Write(buffer, 0, bytesRead)
      End While
      ' The request stream must be closed before getting the response.
      requestStream.Close()
      uploadResponse = uploadRequest.GetResponse()
      Console.WriteLine("Upload complete.")
      Catch ex As UriFormatException
      Console.WriteLine(ex.Message)
      Catch ex As IOException
      Console.WriteLine(ex.Message)
      Catch ex As WebException
      Console.WriteLine(ex.Message)
      Finally
      If uploadResponse IsNot Nothing Then
      uploadResponse.Close()
      End If
      If fileStream IsNot Nothing Then
      fileStream.Close()
      End If
      If requestStream IsNot Nothing Then
      requestStream.Close()
      End If
      End Try
      End Sub
      Private Sub List(ByVal listUrl As String)
      Dim reader As StreamReader = Nothing
      Try
      Dim listRequest As FtpWebRequest = WebRequest.Create(listUrl)
      listRequest.Method = WebRequestMethods.
      Dim listResponse As FtpWebResponse = listRequest.GetResponse()
      reader = New StreamReader(listResponse.GetResponseStream())
      Console.WriteLine(reader.ReadToEnd())
      Console.WriteLine("List complete.")
      Catch ex As UriFormatException
      Console.WriteLine(ex.Message)
      Catch ex As WebException
      Console.WriteLine(ex.Message)
      Finally
      If reader IsNot Nothing Then
      reader.Close()
      End If
      End Try
      End Sub
      End Module
      可以通過設(shè)置 Credentials 屬性來指定用于連接服務(wù)器的憑據(jù)，也可以將它們包含在傳遞給 Create 方法的 URI 的 UserInfo 部分中。
      從 FTP 服務(wù)器下載文件時，如果命令成功，所請求的文件的內(nèi)容即在響應(yīng)對象的流中。通過調(diào)用 GetResponseStream 方法，可以訪問此流。
      如果使用 FtpWebRequest 對象向服務(wù)器上載文件，則必須將文件內(nèi)容寫入請求流，請求流是通過調(diào)用 GetRequestStream 方法或其異步對應(yīng)方法（BeginGetRequestStream 和 EndGetRequestStream 方法）獲取的。必須寫入流并在發(fā)送請求之前關(guān)閉該流。
      請求是通過調(diào)用 GetResponse 方法或其異步對應(yīng)方法（BeginGetResponse 和 EndGetResponse 方法）發(fā)送到服務(wù)器的。請求的操作完成時，會返回一個 FtpWebResponse 對象。FtpWebResponse 對象提供操作的狀態(tài)以及從服務(wù)器下載的所有數(shù)據(jù)。
      vb.net FTP問題？
      If My.Computer.Network.IsAvailable Then
      '如果可用
      Else
      '不可用
      End If
      Public Sub DownloadFile ( _
      address As Uri, _
      destinationFileName As String, _
      userName As String, _
      password As String, _
      showUI As Boolean, _
      connectionTimeout As Integer, _
      overwrite As Boolean, _
      onUserCancel As UICancelOption _
      )
      參數(shù)
      address
      String 或 Uri。要下載的文件的路徑，包括文件名和主機地址。必選。
      destinationFileName
      String。下載文件的文件名和路徑。必選。
      userName
      String。要進行身份驗證的用戶名。默認(rèn)值為空字符串 ""。
      password
      String。要進行身份驗證的密碼。默認(rèn)值為空字符串 ""。
      showUI
      Boolean。指定是否顯示操作進度。默認(rèn)為 False。
      connectionTimeout
      Int32。以毫秒為單位的超時間隔。默認(rèn)值為 100 秒。
      overwrite
      Boolean。指定是否改寫現(xiàn)有文件。默認(rèn)為 False。
      onUserCancel
      UICancelOption。指定當(dāng)用戶在對話框（此對話框在 ShowUI 設(shè)置為 True 時顯示）上單擊“取消”或“否”時的行為。默認(rèn)為 ThrowException。
                  
            
                                                            
      
                                                標(biāo)題名稱：vb.netftp訪問 vb ftp                                                
      
                                                文章位置：http://www.ef60e0e.cn/article/dodojij.html
                                            
      
                                            
                                        
      
                                    
      
                                
      
                            
      
                        
      
                    
      
                
      
            
      
        
      
    
      

      




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    3. 

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