[RESOLVED] Save UDP data to file

Hi, all
I have an application that listen to a port, and receives UDP data. The data is sent to a textbox.
I want to add a checkbox, and when the checkbox is =1 then I want the UDP data to be saved to a file on desktop named with date and time.

I made this code, and it does the job. But it doesn't make a new file when I check and uncheck the checkbox. I can only make one log, then I need to restart my program, to make a new log.

Private Sub sckUDP_DataArrival(ByVal bytesTotal As Long)

On Error Resume Next
If Err Then MsgBox Error$, 48
Dim filelocation As String
Dim strData As String

sckUDP.GetData strData 'Retrieve the data
txtReceive.Text = strData 'Display it

If chkLog = 1 Then
filelocation = "UDP_Log" & "-" & Format(Now, "yyyymmdd hhmmss") & ".txt"
Open filelocation For Append As #1
Print #1, txtReceive.Text
If chkLog = 0 Then
Close #1

End If
End If

End Sub

Use this to create the file name instead of your code

Code:

---

Option Explicit
Dim strFileName As String

Private Sub chkLog_Click()
'Create a new file name each time the box is checked

  If chkLog.Value = vbChecked Then
    strFileName = "UDP_Log" & "-" & Format(Now, "yyyymmdd hhmmss") & ".txt"
  End If
 
End Sub

---

Then

Code:

---

Private Sub sckUDP_DataArrival(ByVal bytesTotal As Long)
Dim filelocation As String
Dim strData As String

  On Error Resume Next
 
  sckUDP.GetData strData 'Retrieve the data
  txtReceive.Text = strData 'Display it
 
  If chkLog.Value = vbChecked Then
    Open strFileName For Append As #1
    Print #1, txtReceive.Text
    Close #1 'Close it every time
  End If

End Sub

---

Hi, Thank's for helping me.
I'll try the code when I come back to work on monday. Where my devices are.
I'm not a skild programmer in VB, and I have sometimes failed using Option Explicit. If I do can I Dim strFileName As String in both chkLog_Click and sckUDP_DataArrival with the same result? Again tnx 4 helping me.

Whether you use Option Explicit or not, you can't. The variable has to have the same data in it in both subs so it has to be declared outside the subs. A variable exists only during its scope (which is the part of the code in which it's declared) so a variable that has to hold the same data in more than 1 sub has to be declared outside them. (If it has to hold a value over more than 1 form it has to be declared outside any forms, which is the main use of Modules - global variabls and globally-available subs and/or functions.)

Option Explicit merely requires that all variables have to be declared. That means that, for example, if you declare sMyString but use sMySting, the compiler will point out your spelling error.

Hi, the code works, great. Thank's.
Now I'm having an other problem with a FTP client, but I'll post it as a new issue.

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Thank you. :)