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Send vCard, vCalendar and WAP Push Message

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In the previous blogs, I showed you how to retrieve phone settings, send and receive SMS, dial a phone number, and answer or hang up a phone call using the .NET SMS library. Now I am going to show you how to send vCard, vCalendar and WAP push message. Take note that sending WAP push message is not fully tested and it may not work in your environment.


vCard is nothing but a SMS in a specific format. Try using the sample project attached in this article to send a vCard. You should be able to see the vCard message format displayed in the text box after you sent it. If the receiving mobile phone supports vCard, then it can be saved straight away into the contact list.

N:Magic Source;;;;

Same thing goes for vCalendar, which is also SMS in a specific format.

SUMMARY:Test Summary

For WAP push message the message format is more complicated and it is not fully tested on all handsets for the SMS library. Basically for a WAP push message a link and a message are required. You can refer the sample code below.

Imports ATSMS

Public Class MainForm

Private WithEvents oGsmModem As New GSMModem

Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
CheckForIllegalCrossThreadCalls = False
End Sub

Private Sub btnPhone_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConnect.Click

If cboComPort.Text = String.Empty Then
MsgBox(“COM Port must be selected”, MsgBoxStyle.Information)
End If

oGsmModem.Port = cboComPort.Text

If cboBaudRate.Text <> String.Empty Then
oGsmModem.BaudRate = Convert.ToInt32(cboBaudRate.Text)
End If

If cboDataBit.Text <> String.Empty Then
oGsmModem.DataBits = Convert.ToInt32(cboDataBit.Text)
End If

If cboStopBit.Text <> String.Empty Then
Select Case cboStopBit.Text
Case “1″
oGsmModem.StopBits = Common.EnumStopBits.One
Case “1.5″
oGsmModem.StopBits = Common.EnumStopBits.OnePointFive
Case “2″
oGsmModem.StopBits = Common.EnumStopBits.Two
End Select
End If

If cboFlowControl.Text <> String.Empty Then
Select Case cboFlowControl.Text
Case “None”
oGsmModem.FlowControl = Common.EnumFlowControl.None
Case “Hardware”
oGsmModem.FlowControl = Common.EnumFlowControl.RTS_CTS
Case “Xon/Xoff”
oGsmModem.FlowControl = Common.EnumFlowControl.Xon_Xoff
End Select
End If

Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Critical)
End Try

oGsmModem.NewMessageIndication = True
Catch ex As Exception

End Try

btnSendvCard.Enabled = True
btnSendvCalendar.Enabled = True
btnSendWapPush.Enabled = True
btnDisconnect.Enabled = True

MsgBox(“Connected to phone successfully !”, MsgBoxStyle.Information)

End Sub

Private Sub btnDisconnect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisconnect.Click
Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Critical)
End Try

btnSendvCard.Enabled = False
btnSendvCalendar.Enabled = False
btnSendWapPush.Enabled = False
btnDisconnect.Enabled = False
btnConnect.Enabled = True

End Sub

Private Sub btnSendvCard_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSendvCard.Click
If txtPhoneNumber.Text.Trim = String.Empty Then
MsgBox(“Phone number must not be empty”, MsgBoxStyle.Critical)
End If

Dim v As New vCard
v.LastName = “Magic Source”
v.Emails = New vCard.vEmails()
v.Emails.Add(New vCard.vEmail(“”))
v.Telephones = New vCard.vTelephones
v.Telephones.Add(New vCard.vTelephone(“0192292309″, vCard.vLocations.CELL, vCard.vPhoneTypes.VOICE, True))
txtMsg.Text = v.ToString
Dim msgId As String = oGsmModem.SendSMS(txtPhoneNumber.Text, v.ToString)
MsgBox(“vCard sent. Message id is “ + msgId)
Catch ex As Exception
MsgBox(ex.Message & “. Make sure your SIM memory is not full.”, MsgBoxStyle.Critical)
End Try
End Sub

Private Sub btnSendvCalendar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSendvCalendar.Click
If txtPhoneNumber.Text.Trim = String.Empty Then
MsgBox(“Phone number must not be empty”, MsgBoxStyle.Critical)
End If

Dim v As New vCalendar
Dim vE As New vCalendar.vEvent
vE.DTStart = New Date
vE.DTEnd = New Date
vE.Organizer = “Test Org”
vE.Summary = “Test Summary”
txtMsg.Text = v.ToString
Dim msgId As String = oGsmModem.SendSMS(txtPhoneNumber.Text, v.ToString)
MsgBox(“vCalendar sent. Message id is “ + msgId)
Catch ex As Exception
MsgBox(ex.Message & “. Make sure your SIM memory is not full.”, MsgBoxStyle.Critical)
End Try
End Sub

Private Sub btnSendWapPush_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSendWapPush.Click
If txtPhoneNumber.Text.Trim = String.Empty Then
MsgBox(“Phone number must not be empty”, MsgBoxStyle.Critical)
End If
Dim href As String = “”
Dim text As String = “Share your mobile today”
Dim body As String = New WapPushMessage(href, text).ToString
oGsmModem.Encoding = ATSMS.Common.EnumEncoding.Hex_Message
Dim msgId As String = oGsmModem.SendSMS(txtPhoneNumber.Text, body)
MsgBox(“Message sent. Message id is “ + msgId)
Catch ex As Exception
MsgBox(ex.Message & “. Make sure your SIM memory is not full.”, MsgBoxStyle.Critical)
End Try
End Sub
End Class

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  1. Prashant | Oct 30, 2007 | Reply

    Is it possible to get list of Contacts, if yes how to implement that?

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  5. magnus | Apr 14, 2009 | Reply

    I’m using an SMS Gateway to send texts, posting to a web service through http. If I post a vcal message, it is still sent as a normal text and the phone reads it as normal text. Do you have any idea how I can make it send a vcal and not just a normal text message?

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    Try appending an UDH to your message. vCard UDH Header usually is 06050423F40000

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  9. Esteban | Oct 15, 2009 | Reply

    Hi. I tried to use this code with Nokia 5200 and Samsung X-426 but the code don´t work.

    I need help please !

    I use PortMon to view COM communications.
    Results with Samsung X-426:
    Send commands but the modem not respond. If I connect with Hyperterminal, the modem repospond normally.

    Results with Nokia 5200:
    Every commands returns ERROR


  10. Anna | May 4, 2010 | Reply

    That is a great idea!

  11. ajith murali | Aug 10, 2010 | Reply

    Dear Sir / Madam

    Plz help me to find a general format which can be used to send vcard sms to any mobile.
    I need inner code,since I am trying to built a program to send vcard sms,but I am not able to find approriate code.

    Will u help me plzzzzz

    Ur’s truely,
    Ajith murali

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