This is an old revision of the document!

WinSCP .NET Assembly and COM Library

The WinSCP .NET assembly winscpnet.dll is a .NET wrapper around WinSCP’s scripting interface that allows your code to connect to a remote machine and manipulate remote files over SFTP, SCP, and FTP sessions from .NET languages, such as C#, VB.NET, and others, or from environments supporting .NET, such as PowerShell and SQL Server Integration Services (SSIS).

The assembly is also exposed to COM, and as such it can be used from variety of other programming languages and development environments–e.g., WSH-hosted active scripting languages like JScript and VBScript, Visual Basic for Applications (VBA), Perl, and Python.

The library is primarily intended for advanced automation tasks that require conditional processing, loops or other control structures for which the basic scripting interface is too limited. The library is not a general purpose file transfer library. It particularly lacks support for interactive processing and as such it is not well suited for use in GUI applications.

Downloading and Installing the Assembly
Using Classes from WinSCP .NET Assembly
Classes
Examples
Converting Script to Code Based on .NET Assembly
License

Downloading and Installing the Assembly

First you need to download and install the assembly.

Using Classes from WinSCP .NET Assembly

Create an instance of the WinSCP.SessionOptions class and fill in all necessary information to allow an automatic connection and authentication of your session.
Create an instance of the WinSCP.Session class. Optionally you can hook handlers of some events of the class.
Open the session using Session.Open method, passing instance of your WinSCP.SessionOptions.

Once the session is opened, you can use any of the WinSCP.Session methods to manipulate remote files, e.g.,

Session.GetFiles to download files,
Session.PutFiles to upload files or
Session.SynchronizeDirectories to synchronize directories.

Classes

Namespace: WinSCP

Class	Description
ChmodEventArgs	Provides data for change of permissions event.
CommandExecutionResult	Represents results of Session.ExecuteCommand.
FailedEventArgs	Provides data for `Session.Failed` event.
FileOperationEventArgs	Provides data for abstract file operation event.
FilePermissions	Represents *nix-style remote file permissions.
FileTransferProgressEventArgs	Provides data for file transfer progress event.
OperationEventArgs	Provides data for abstract operation event.
OperationResultBase	Represents results of abstract batch operation.
RemoteDirectoryInfo	Represents data about remote directory.
RemoteFileInfo	Represents data about remote file.
RemovalEventArgs	Provides data for remote file removal event.
RemovalOperationResult	Represents results of file removal (`Session.RemoveFiles`).
Session	Represents session. Provides methods for manipulating remote files.
SessionException	Exception associated with the `Session`.
SessionLocalException	Exception associated with the `Session` originating from this assembly.
SessionOptions	Defines information to allow an automatic connection and authentication of the session. Is used with `Session.Open` method.
SessionRemoteException	Exception associated with the `Session`, originating from WinSCP console session.
SynchronizationResult	Represents results of synchronization (`Session.SynchronizeDirectories`).
TouchEventArgs	Provides data for remote file timestamp change event.
TransferEventArgs	Provides data for file transfer event.
TransferOperationResult	Represents results of file transfer (`Session.GetFiles` or `Session.PutFiles`).
TransferOptions	Defines options for file transfers.
TransferResumeSupport	Configures automatic resume/transfer to temporary filename.

Examples

C# Example

There are also other C# examples.

using System;
using WinSCP;
 
class Example
{
    public static int Main()
    {
        try
        {
            // Setup session options
            SessionOptions sessionOptions = new SessionOptions {
                Protocol = Protocol.Sftp,
                HostName = "example.com",
                UserName = "user",
                Password = "mypassword",
                SshHostKeyFingerprint = "ssh-rsa 2048 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx"
            };
 
            using (Session session = new Session())
            {
                // Connect to FTP server
                session.Open(sessionOptions);
 
                // Upload files
                TransferOptions transferOptions = new TransferOptions();
                transferOptions.TransferMode = TransferMode.Binary;
 
                TransferOperationResult transferResult;
                transferResult = session.PutFiles(@"d:\toupload\*", "/home/user/", false, transferOptions);
 
                // Throw on any error
                transferResult.Check();
 
                // Print results
                foreach (TransferEventArgs transfer in transferResult.Transfers)
                {
                    Console.WriteLine("Upload of {0} succeeded", transfer.FileName);
                }
            }
 
            return 0;
        }
        catch (Exception e)
        {
            Console.WriteLine("Error: {0}", e.Message);
            return 1;
        }
    }
}

VB.NET Example

There are also other VB.NET examples.

Imports System
Imports WinSCP
 
Friend Class Example
 
    Public Shared Function Main() As Integer
 
        Try
            ' Setup session options
            Dim sessionOptions As New SessionOptions
            With sessionOptions
                .Protocol = Protocol.Sftp
                .HostName = "example.com"
                .UserName = "user"
                .Password = "mypassword"
                .SshHostKeyFingerprint = "ssh-rsa 2048 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx"
            End With
 
            Using session As Session = New Session
                ' Connect
                session.Open(sessionOptions)
 
                ' Upload files
                Dim transferOptions As New TransferOptions
                transferOptions.TransferMode = TransferMode.Binary
 
                Dim transferResult As TransferOperationResult
                transferResult = session.PutFiles("d:\toupload\*", "/home/user/", False, transferOptions)
 
                ' Throw on any error
                transferResult.Check
 
                ' Print results
                Dim transfer As TransferEventArgs
                For Each transfer In transferResult.Transfers
                    Console.WriteLine("Upload of {0} succeeded", transfer.FileName)
                Next
            End Using
 
            Return 0
        Catch e As Exception
            Console.WriteLine("Error: {0}", e)
            Return 1
        End Try
 
    End Function
 
End Class