vb.net文件上传 vbnet filestream

跪求在visual studio2005下用脚本任务vb.net实现上传文件至FTP功能（应用变量）

Const SYNCHRONIZE = H100000

Const INFINITE = HFFFFFFFF

Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long

Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Declare Function WaitForSingleObject Lib "kernel32" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long

Private Sub Command1_Click()

Dim filename As String

Dim ftp As String

Dim uname As String

Dim upin As String

ftp = InputBox("请输入服务器地址")

uname = InputBox("请输入帐号", , "anonymous")

upin = InputBox("请输入密码", , "IE@User")

filename = Timer()

Open filename  ".script" For Output As #1

    Print #1, "user"

    Print #1, uname

    Print #1, upin

    Print #1, "pwd"

    Print #1, "hash"

    Print #1, "put "  filename  ".txt"

    Print #1, "quit"

Close #1

Open filename  ".txt" For Output As #1

    Print #1, Text1.Text

    Print #1, Combo1.Text

Close #1

DoEvents

Dim pId As Long, pHnd As Long

pId = Shell("ftp -n -s:"  filename  ".script"  " "  ftp, vbHide)

pHnd = OpenProcess(SYNCHRONIZE, 0, pId)

If pHnd  0 Then

Call WaitForSingleObject(pHnd, INFINITE)

Call CloseHandle(pHnd)

End If

Kill filename  ".script"

End Sub

如果你觉得可以，把100分给我吧

我的方法很另类，给你说说过程

为了不重复文件名，我取时间为文件名filename

生成filename.script脚本，传输FTP用

生成filename.txt保存了combo1和text1的文字

调用ftp命令传输，不需要inet或winsock控件

API是SHELL WAIT功能，因为script脚本保存了帐号和密码，当传输完成后删除filename.script脚本

觉得如何，如果用inet不如这个简单，毕竟FTP不是自己写的，不管PASV与否都正常使用，唯一就是密码保存要等传输完成

你想的第一个方案是不可能的，FTP是文本传输协议，与HTTP不一样，不能写POST，实在想那样，VB做不了，需要手动创建数据包欺骗服务器

相关问答

Q1: vb.net 中如何将图片保存到SQL数据库

#Region "二进制文件vb.net文件上传的存储函数" Public Function BinaryToFile(ByRef TableRowColItem As Object, ByVal FileName As String) As Boolean Dim data As Byte() = TableRowColItem

Dim myfilestream As New System.IO.FileStream(FileName, IO.FileMode.Create)

myfilestream.Write(data, 0, data.Length)

myfilestream.Close()

Return True

End Function Public Function BinaryToImage(ByRef TableRowColItem As Object, ByRef image As Image) As Boolean Dim data As Byte() = TableRowColItem Dim imgStream As New System.IO.MemoryStream '(data)

imgStream.Write(data, 0, data.Length)

image = System.Drawing.Image.FromStream(imgStream)

imgStream.Close()

imgStream.Dispose() Return True

End Function

Public Function BinaryFromFile(ByVal FileName As String, ByRef TableRowColItem As Object) As Boolean Using myfilestream As New FileStream(FileName, FileMode.Open, FileAccess.Read)

Dim data() As Byte

ReDim data(myfilestream.Length - 1)

myfilestream.Read(data, 0, myfilestream.Length)

myfilestream.Close()

TableRowColItem = data End Using

Return True

End Function Public Function BinaryFromImage(ByRef Image As Image, ByRef TableRowColItem As Object) As Boolean

Dim imgStream As New MemoryStream

Dim b As New Bitmap(Image) b.Save(imgStream, System.Drawing.Imaging.ImageFormat.Jpeg) Dim data As Byte() = imgStream.GetBuffer

TableRowColItem = data

data = TableRowColItem

imgStream.Close()

imgStream.Dispose() Return True

End Function Public Function BinaryFromImage(ByVal Image As Image, ByRef TableRowColItem As Object, ByVal imgFormat As System.Drawing.Imaging.ImageFormat) As Boolean

Dim imgStream As New MemoryStream

'Image.Save(imgStream, imgFormat)

'Dim b As New Bitmap(Image)

'b.Save("c:\a.bmp", imgFormat)

'b.Save("c:\a.bmp", imgFormat) Dim data As Byte() = imgStream.GetBuffer TableRowColItem = data

data = TableRowColItem

imgStream.Close()

Return True

End Function

#End Region

Q2: vb.net ftp上传文件

Dim OpenFileDialog As New OpenFileDialog

OpenFileDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.MyDocuments

OpenFileDialog.Filter = "文本文件(*.jpg)|*.jpg|所有文件(*.*)|*.*"

If (OpenFileDialog.ShowDialog(Me) = System.Windows.Forms.DialogResult.OK) Then

Dim FileName As String = OpenFileDialog.FileName

' TODO: 在此处添加打开文件的代码。

textbox1.Text = FileName

End If

第一个按钮 上传

Dim filelast As String = fileaddbefore.Text.Substring(fileaddbefore.Text.LastIndexOf("."), fileaddbefore.Text.Length - fileaddbefore.Text.LastIndexOf("."))

MessageBox.Show(filelast)

My.Computer.Network.UploadFile(textbox1.Text, "" 文件名.Text filelast, "登录名1", "登录密码", True, 100)

第二个按钮

Q3: 用VB.NET 怎样通过给的HTTP地址上传文件

e As Int32 = 0 To Files.Count - 1

Dim PostedFile As HttpPostedFile = Files(iFile)

Dim FileName, FileExtent As String

FileName = Serverpath System.IO.Path.GetFileName(PostedFile.FileName)

If System.IO.Path.GetFileName(PostedFile.FileName) "" Then

FileName = System.IO.Path.GetFileName(PostedFile.FileName)

Dim Url As String = Me.Label1.Text.Trim FileName

PostedFile.SaveAs(Serve

Q4: VB.net连接FTP操作

MSDN上的，看看对你有没有帮助。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

可以通过设置 Credentials 属性来指定用于连接服务器的凭据，也可以将它们包含在传递给 Create 方法的 URI 的 UserInfo 部分中。

从 FTP 服务器下载文件时，如果命令成功，所请求的文件的内容即在响应对象的流中。通过调用 GetResponseStream 方法，可以访问此流。

如果使用 FtpWebRequest 对象向服务器上载文件，则必须将文件内容写入请求流，请求流是通过调用 GetRequestStream 方法或其异步对应方法（BeginGetRequestStream 和 EndGetRequestStream 方法）获取的。必须写入流并在发送请求之前关闭该流。

请求是通过调用 GetResponse 方法或其异步对应方法（BeginGetResponse 和 EndGetResponse 方法）发送到服务器的。请求的操作完成时，会返回一个 FtpWebResponse 对象。FtpWebResponse 对象提供操作的状态以及从服务器下载的所有数据。

Q5: vb.net 图片上传

是不是这样vb.net文件上传的vb.net文件上传？

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