Connection error

Question

How do I verify or return a value if there is a connection error (can't find server, user isn't connected to the internet, etc.)?
Will this work?

ftp.ServerAddress = "1.1.1.1"
ftp.ServerPort = 21
ftp.UserName = "username"
ftp.Password = "password"
ftp.Connect()
If ftp.IsConnected = False Then
  MsgBox("Unable to connect to the server. Please verify that you are connected to the internet and try again.", MsgBoxStyle.Critical, "WARNING")
  Return
Else : End If

Answer 1

Try
  ftp.Connect()
Catch ex As Exception
  MsgBox("Unable to connect to the server. Please verify that you are connected to the internet and try again.", MsgBoxStyle.Critical, "WARNING")
End Try

Answer 2

That worked just fine, one more question..
I'm getting a 'getsize' error 500 - It would appear from my web searching, that our server doesn't accept that command. Is there a way around this?
I'm trying to verify the file transferred by comparing original file size to destination file size. I don't care how I verify as long as it is accurate.
Any help is appreciated.

Answer 3

You could use GetFileInfos() on the directory. However if the file transferred without an exception, it is reasonable to expect that it transferred correctly.

Answer 4

I'll try that..
I suppose I could even use the Try Catch code for the ftp.upload process as well. If it errors I'll know..
thanks for helping me think this through!