Question manage Exception into the Form (VB 2008)

[ssormanni]

Hi all,
I've a little problem to how manage a TCP client exception. I've declared a client in Form1 as described below:

Public Class Form1
'
Public IDEA As New TcpClient("192.168.1.21", 502)
Public Premium As Device.ModbusIpMaster = Modbus.Device.ModbusIpMaster.CreateIp(IDEA)

I want to manage the Exception (ie when my client is offline) by Try..Catch, but unfortunally inside Form1 I can't.
How can I bypass this problem?

Thanks a lot who reply to me

Stefano

 

[JohnH]

Public IDEA As New TcpClient("192.168.1.21", 502)

this is short for (declaring variable, creating object and assign reference to variable):

Public IDEA As TcpClient = New TcpClient("192.168.1.21", 502)

And this is really just a convenience for you as VB developer, when application is compiled this is rearranged to something like this:

Public IDEA As TcpClient 

Public Sub New()
    IDEA = New TcpClient("192.168.1.21", 502)
End Sub

Can you see where this is getting at? You can do something similar, and add the Try-Catch now.

 

[ssormanni]

Hi John, and thank you very much for your fast reply. This is a Slave Modbus and I have to manage the error in case of my system has a Shutdown. I will try soon your Adjustment.

Cheers