Xojo Plugin

Directory Existence Check

See more FTP Examples

How to test if a directory exists on an FTP server.

A good way to check to see if a directory already exists is to try to "cd" to that remote directory by calling ChangeRemoteDir. If it succeeds, then the directory exists. If not, then it does not exist. An alternative method is to set the ListPattern = "*" and then iterate over the files/directories, looking for the directory.

Xojo Plugin

Dim success As Boolean
success = False

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Dim ftp As New Chilkat.Ftp2

ftp.Hostname = "ftp.example.com"
ftp.Username = "login"
ftp.Password = "password"

// Connect and login to the FTP server.
success = ftp.Connect()
If (success <> True) Then
    System.DebugLog(ftp.LastErrorText)
    Return
End If

// Does the "temp" directory exist?
Dim dirExists As Boolean
dirExists = ftp.ChangeRemoteDir("/temp")
If (dirExists = True) Then
    System.DebugLog("Yes, the temp directory exists.")
    //  Yes, it exists. Restore the current remote dir:
    success = ftp.ChangeRemoteDir("..")
    If (success <> True) Then
        System.DebugLog(ftp.LastErrorText)
        Return
    End If

End If

// Alternatively, you may set the ListPattern = "*" and 
//  look for the directory:
ftp.ListPattern = "*"

Dim i As Int32
Dim n As Int32
n = ftp.GetDirCount()
If (n < 0) Then
    // Failed to get directory listing based on ListPattern
    System.DebugLog(ftp.LastErrorText)
    Return
End If

If (n > 0) Then
    For i = 0 To n - 1
        Dim isDir As Boolean
        isDir = ftp.GetIsDirectory(i)
        If (isDir = True) Then
            Dim fname As String
            fname = ftp.GetFilename(i)
            If (fname = "temp") Then
                System.DebugLog("Found temp directory!")
                success = ftp.Disconnect()
                Return
            End If

        End If

    Next
End If

success = ftp.Disconnect()