send ics card to gmail from .NET

[yaniv]

I use the code below to send invitations from my web calendar to other web users. I invitations get very good to outlook users and outlook web version, they have the accept and deny buttons and so on. And the message is in the mail body too. The problem that when I send it to Gmail users, the invitation only appear as attachment, there is no "accept" or deny buttons and so on. In the message body there is only the html I send as "description".

Can I send this invitations from my dot net web page and make it appear the same in Gmail and outlook?

i tried for houes every thing i know with out success... does any body have idea?

Thanks.

my code-
Public Shared Function sendOutlookInvitationViaICSFile(objApptEmail As eAppointmentMail) As String
Try
Dim sc As New SmtpClient("XXXXXXXXXXXXXXX")

Dim msg As New System.Net.Mail.MailMessage()
msg.From = New MailAddress("XXXXXXXXXXXXXX", "XXXXXXXXXXXXXX")

msg.[To].Add(New MailAddress(objApptEmail.Email, objApptEmail.Name))
msg.Subject = objApptEmail.Subject
msg.IsBodyHtml = True

Dim ct As New System.Net.Mime.ContentType("text/calendar")
ct.Parameters.Add("method", "REQUEST")
ct.Parameters.Add("charset", "UTF-8")

Dim avCal As AlternateView = AlternateView.CreateAlternateViewFromString(buildICSText(objApptEmail), ct)
avCal.TransferEncoding = Mime.TransferEncoding.Base64

msg.AlternateViews.Add(avCal)

Dim nc As New Net.NetworkCredential("shoresh", "15128511")

' sc.EnableSsl = True
sc.Credentials = nc

Try
sc.Send(msg)
Return True
Catch ex As Exception

Return ex.Message
End Try
Catch ex As Exception
Return ex.Message
End Try

End Function

Private Shared Function buildICSText(objApptEmail As eAppointmentMail) As String
Dim str As New StringBuilder()
str.AppendLine("BEGIN:VCALENDAR")
str.AppendLine("PRODID:-//" & Convert.ToString(objApptEmail.Email))
str.AppendLine("VERSION:2.0")
str.AppendLine("CALSCALE:GREGORIAN")
str.AppendLine("METHOD:REQUEST")
str.AppendLine("BEGIN:VEVENT")
str.AppendLine(String.Format("DTSTART:{0:yyyyMMddTHHmmssZ}", objApptEmail.StartDate.ToUniversalTime().ToString("yyyyMMdd\THHmmss\Z")))
str.AppendLine(String.Format("DTSTAMP:{0:yyyyMMddTHHmmssZ}", (objApptEmail.EndDate - objApptEmail.StartDate).Minutes.ToString()))
str.AppendLine(String.Format("DTEND:{0:yyyyMMddTHHmmssZ}", objApptEmail.EndDate.ToUniversalTime().ToString("yyyyMMdd\THHmmss\Z")))
str.AppendLine("ORGANIZER:mailto:meni88@gmail.com")
str.AppendLine("LOCATION:" & Convert.ToString(objApptEmail.Location))
str.AppendLine(String.Format("UID:{0}", Guid.NewGuid()))
str.AppendLine(String.Format("DESCRIPTION:{0}", objApptEmail.Body))
str.AppendLine(String.Format("X-ALT-DESC;FMTTYPE=text/html:{0}", objApptEmail.Body))
str.AppendLine(String.Format("SUMMARY:{0}", objApptEmail.Subject))
str.AppendLine(String.Format("ORGANIZER:MAILTO:{0}", objApptEmail.Email))
str.AppendLine(String.Format("ATTENDEE;CN=""{0}"";RSVP=TRUE:mailto:{1}", objApptEmail.Name, objApptEmail))
str.AppendLine("BEGIN:VALARM")
str.AppendLine("TRIGGERT15M")
str.AppendLine("ACTIONISPLAY")
str.AppendLine("DESCRIPTION:Reminder")
str.AppendLine("END:VALARM")
str.AppendLine("TRANSP:OPAQUE")
str.AppendLine("END:VEVENT")
str.AppendLine("END:VCALENDAR")

Return str.ToString()
End Function

 

[PlausiblyDamp]

As far as I am aware the way Gmail and Outlook handle the attachment is specific to each application. The Accept and Reject buttons are provided by Outlook and there isn't a similar feature built into Gmail.

 

[yaniv]

it is possible. Every mail system has it's "invite" function. the problem with my code was the format of the "tags", in Gmail you have to be very accurate in the syntax. OUTLOOK is more forgivable.
Now it is working for me in both platforms.