Xceed .NET Libraries Documentation
BeginReceiveFile(String,Int64,String,AsyncCallback,Object) Method


Xceed.Ftp Assembly > Xceed.Ftp Namespace > AsyncFtpClient Class > BeginReceiveFile Method : BeginReceiveFile(String,Int64,String,AsyncCallback,Object) Method
The filename of the file to retrieve. Some FTP servers may be case-sensitive!
The byte offset (of the remote file) at which to start receiving data from the remote file. If append is true, the remote file will be appended to the end of the local file no matter what the value of offset. Therefore, to implement a real resume procedure, the size of the local file must be specified in offset and append must be set to true.
The path and filename of the file as it will be stored on the local system.
Callback method to be called when the asynchronous operation is completed.
An object containing state information for this operation.
Begins the process of receiving the specified file from the current working folder starting from the specified offset and stores it on the local system using the specified path and filename. Don't forget to call EndReceiveFile!
Syntax
'Declaration
 
Public Overloads Function BeginReceiveFile( _
   ByVal remoteFilename As String, _
   ByVal offset As Long, _
   ByVal localFilename As String, _
   ByVal callback As AsyncCallback, _
   ByVal state As Object _
) As IAsyncResult
'Usage
 
Dim instance As AsyncFtpClient
Dim remoteFilename As String
Dim offset As Long
Dim localFilename As String
Dim callback As AsyncCallback
Dim state As Object
Dim value As IAsyncResult
 
value = instance.BeginReceiveFile(remoteFilename, offset, localFilename, callback, state)
public IAsyncResult BeginReceiveFile( 
   string remoteFilename,
   long offset,
   string localFilename,
   AsyncCallback callback,
   object state
)

Parameters

remoteFilename
The filename of the file to retrieve. Some FTP servers may be case-sensitive!
offset
The byte offset (of the remote file) at which to start receiving data from the remote file. If append is true, the remote file will be appended to the end of the local file no matter what the value of offset. Therefore, to implement a real resume procedure, the size of the local file must be specified in offset and append must be set to true.
localFilename
The path and filename of the file as it will be stored on the local system.
callback
Callback method to be called when the asynchronous operation is completed.
state
An object containing state information for this operation.

Return Value

An System.IAsyncResult representing the status of the asynchronous operation.
Remarks

By default, the file will be received from the current working folder. If you want to receive the file from 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 a callback, the System.IAsyncResult is provided as a parameter. You should call EndReceiveFile in that callback. When NOT providing a callback, you should keep the returned IAsyncResult and call EndReceiveFile with it when ready to complete. In this later case, the call to EndReceiveFile may block until the operation completes.

Requirements

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

See Also

Reference

AsyncFtpClient Class
AsyncFtpClient Members
Overload List