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I'm using this to send an SMS using mCore ActiveX Component in VB6. This code is working fine but sometimes it sends a single SMS multiple times (in fact, hundreds of times until I close my application). Please guide me as I'm very familiar with VB6

Public Function SendSMS()

On Error Resume Next

Dim strSendResult As String
Dim ij As Integer
Dim message As String, blnAllMsgsSent As Boolean
Dim message1
Dim id As Integer
blnAllMsgsSent = True

If objSMS.Connect Then

Timer2.Enabled = False
ij = 0
Sql = "SELECT id,message,MobileNo FROM tblSendSMS where status='Pending' order by id asc;"
RS.Open Sql, Conn, adOpenDynamic
If Not RS.EOF Then
    Do While Not RS.EOF
    message = RS!message
    If RS!message <> "" Then
      id = RS!id
    '' send message now
 strSendResult = objSMS.SendSMS(MobileNo, message)
 strSendResult = ""
    If objSMS.IsError(True, "Application.exe") Then
    blnAllMsgsSent = False
    End If
 End If
   If blnAllMsgsSent Then
    Sql = "update tblSendSMS set status='Sent' where  id=" & id
    Conn.Execute Sql
   End If
    '' end send
   End If
    ij = ij + 1
  End If

End If
Timer2.Enabled = True

End Function
Posted 18-Oct-12 0:18am
Edited 18-Oct-12 0:27am

1 solution

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Solution 1


im not good in vb6 but lets talk this logically

dont put your code to send SMS in a LOOP it seems that the code is executed many times
thats why it will send a lot of message unless the condition in your loop is done or you EXIT your application.
 strSendResult = objSMS.SendSMS(MobileNo, message)
on top of this code you have a do while loop

u may use Try Catch instead to Get errors

you should only use loop to send a particular message in many numbers .
or to concatenate messages since if you exceed your message up to 160 chars
you will get error. because sending a single sms will support only 160 characters
if you exceed in 160 chars we are now talking about another sms.

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0 OriginalGriff 490
1 Sergey Alexandrovich Kryukov 325
2 ProgramFOX 265
3 Maciej Los 245
4 Andreas Gieriet 200
0 OriginalGriff 465
1 Sergey Alexandrovich Kryukov 275
2 ProgramFOX 265
3 Maciej Los 245
4 Andreas Gieriet 200

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