VB.NET

Get an FTP Listing Entry's Size as a String

Demonstrates the Chilkat Ftp2.GetSizeStr method, which returns the size in bytes of a cached directory-listing entry as a decimal string. The only argument is a zero-based index.

Background: Returning the size as text sidesteps integer-width limits entirely, which is useful in languages without a convenient 64-bit type and whenever you only need to display or log the value. Parse the string when you need to do arithmetic on it; otherwise it is ready to print as-is.

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VB.NET

Dim success As Boolean = False

'  Demonstrates the Ftp2.GetSizeStr method, which returns the size in bytes of a cached
'  directory-listing entry as a decimal string.  The only argument is a zero-based index.

Dim ftp As New Chilkat.Ftp2

ftp.Hostname = "ftp.example.com"
ftp.Username = "myFtpLogin"

'  Normally you would not hard-code the password in source.  You should instead obtain it
'  from an interactive prompt, environment variable, or a secrets vault.
ftp.Password = "myPassword"

success = ftp.Connect()
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If


success = ftp.ChangeRemoteDir("public_html")
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If


'  GetDirCount retrieves the directory listing on the first call and returns the number of
'  entries.  A negative return indicates failure.
Dim n As Integer = ftp.GetDirCount()
If (n < 0) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If


Dim i As Integer
For i = 0 To n - 1
    Dim name As String = ftp.GetFilename(i)

    '  The string form avoids integer-size limits in languages without a convenient 64-bit type.
    Dim fileSize As String = ftp.GetSizeStr(i)
    Debug.WriteLine(name & "  " & fileSize & " bytes")
Next

success = ftp.Disconnect()
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If