'Declaration
 
Public Overloads Function BeginSendFile( _
   ByVal source As Stream, _
   ByVal remoteFilename As String, _
   ByVal callback As AsyncCallback, _
   ByVal state As Object _
) As IAsyncResult

'Usage
 
Dim instance As AsyncFtpClient
Dim source As Stream
Dim remoteFilename As String
Dim callback As AsyncCallback
Dim state As Object
Dim value As IAsyncResult
 
value = instance.BeginSendFile(source, remoteFilename, callback, state)

public IAsyncResult BeginSendFile( 
   Stream source,
   string remoteFilename,
   AsyncCallback callback,
   object state
)

Parameters

source

A System.IO.Stream whose data is to be sent to the FTP server.

remoteFilename

The filename as it will be stored on the FTP server. Some FTP servers may be case-sensitive!

callback

Callback method to be called when the asynchronous operation is completed.

state

An object containing state information for this operation.

Return Value

By default, the file will be sent to the current working folder. If you want to send the file to another location, you could use the BeginChangeCurrentFolder%M:Xceed.Ftp.AsyncFtpClient.EndChangeCurrentFolder(System.IAsyncResult)% methods and/or BeginChangeToParentFolder%M:Xceed.Ftp.AsyncFtpClient.EndChangeToParentFolder(System.IAsyncResult)% methods to change the current working folder. Absolute paths can also be provided, however some FTP servers might not support absolute paths and different server types may have different ways of representing absolute paths.

The current working folder can be retrieved via the BeginGetCurrentFolder%M:Xceed.Ftp.AsyncFtpClient.EndGetCurrentFolder(System.IAsyncResult)% methods.

When using this overload of the BeginSendFile method, in the FtpClient.SendingFile event, the TransferringFileEventArgs.LocalFilename property will be System.String.Empty. This overload will also ignore the value of the FtpClient.PreAllocateStorage property.

When using a callback, the System.IAsyncResult is provided as a parameter. You should call EndSendFile in that callback. When NOT providing a callback, you should keep the returned IAsyncResult and call EndSendFile with it when ready to complete. In this later case, the call to EndSendFile may block until the operation completes.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

AsyncFtpClient Class
AsyncFtpClient Members
Overload List