Hello,
On my login form I have a timer and every tick I run this piece of code:
Try
Client.Connect(IpAddress, Port)
Catch ex As SocketException
End Try
and update a label to whether the server is online or offline. However when the server if offline it throws a exception error which makes the form unresponsive for a small amount of time. So my question is, is there a way to stop this?
Any help with this would be much appreciated,
Minko
When you try to connect, the connection does not happen instantaneously. The connection timeout has to elapse before the attempt fails. The way to avoid the freezing is to put the code in a separate thread. However, with that approach you have to use a delegate to update your main form from the thread. Fortunately, that is not difficult and I have an example of how to do that here.
I thought I was going to need to run it in a new thread, just wanted to make sure it was the correct thing to do.
Thank you very much for the help it is much appreciated.
Minko
If you have any problems getting the code to work feel free to continue this thread.
Hello,
I have set it up on another thread but I am having a problem. The problem is it still does not change the text. My code is as follows:
Dim ServerStatusThread As New Thread(New ThreadStart(AddressOf ServerStatus))
ServerStatusThread.Start()
Private Delegate Sub dlgUpdateServerStatus(ByVal status As String)
Public Sub ServerStatus()
Do While frmLoginVisible
If ConnectToServer() Then
UpdateServerStatus("Online")
Else
UpdateServerStatus("Offline")
End If
System.Threading.Thread.Sleep(5000)
Loop
End Sub
Private Sub UpdateServerStatus(ByVal status As String)
If frmLogin.lblServerStatus.InvokeRequired Then
Dim dlg As New dlgUpdateServerStatus(AddressOf UpdateServerStatus)
frmLogin.Invoke(dlg, status)
Else
frmLogin.lblServerStatus.Text = "Server Status: " & status
End If
End Sub
It always runs this line of code:
frmLogin.lblServerStatus.Text = "Server Status: " & status
but the labels text never changes.
Hopefully you can help me figure this out. Thanks for the help so far,
Minko
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