CDO for Exchange 2000:Messaging

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CDO for Exchange 2000 Messaging Jason
MayansProgram ManagerExchange Server Product
UnitMicrosoft Corporation
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(No Transcript)
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CDO for Exchange 2000 Messaging Jason
MayansProgram ManagerExchange Server Product
UnitMicrosoft Corporation
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Agenda

• Introduction to MIME Messaging
• Messaging features scenarios
• Messaging Object Model
• Objects
• Interfaces
• Code Samples

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Intro to MIME Messaging

• Internet Standard
• Multiple content formats in mail
• Extends RFC 822
• Headers for encoding and identifying content
• Content-Type
• Content-Transfer-Encoding
• Content-Disposition
• Supported by Internet mail clients

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MIME Messages

• Divided into Body parts
• Separated by a boundary tag
• Body parts contain child body parts or data
• Content-Type
• Single part body parts
• Multipart body parts

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Sample MIME MessageText and HTML
From "Jason Mayans" ltjmayans_at_microsoft.comgtTo
"Bob" ltbob_at_samples.microsoft.comgtSubject Text
HTML MessageDate Sat, 4 Sep 1999 123248
0700MIME-Version 1.0Content-Type
multipart/alternative boundary"----_123" ------
_ 123Content-Type text/plain
charset"iso-8859-1Content-Transfer-Encoding
quoted-printable This is a multipart/alternative
text html message. ------_ 123Content-Type
text/html charset"iso-8859-1Content-Transfer-E
ncoding quoted-printable ltHTMLgtltBODY
bgColor3DffffffgtltFONT color3Dff0000
face3DArial size3D2gtThis is
a20multipart/alternative text amp html
message.lt/FONTgtlt/BODYgtlt/HTMLgt------_123--
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CDO Messaging Scenarios

• Server-based messaging development
• Targeted mailers
• Email notifications
• Events Store and Transport
• Discussion forums
• Any application constructing MIME content

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Messaging Objects
Message
IBodyPart IMessage IDataSource IRow
Addressee
IAddressee
BodyParts Collection
Configuration
IBodyParts
IConfiguration IRow
BodyPart
IBodyPart IRow
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MessagingFlexible design

• CDO lets you decide how much to abstract the
  underlying MIME data
• Use IMessage and let CDO handle the MIME details
• Use IBodyPart for more explicit control over the
  MIME hierarchy
• Use Streams for complete control

IMessage
IBodyPart
Streams
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IMessage InterfaceIntroduction

• Supported by messaging objects
• Shortcuts for complex MIME operations
• AddAttachment, CreateMHTMLBody,
  AddRelatedBodyPart
• Headers and other properties in ADO Fields
  collection
• Exposes an ADO Stream for access to underlying
  data

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IMessage InterfaceSending and posting messages

• Messages can be sent via various transports
• SMTP
• Local and Remote
• NNTP
• Local and Remote
• Exchange Outbox
• Submit through OLE/DB directly to Outbox
• Public Folder Posting

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IMessage Interface Sending a simple message
Set Msg CreateObject(CDO.Message) Set
Msg.Configuration myConfig Msg.To
jeff_at_samples.microsoft.com Msg.Subject The
Meeting Msg.TextBody What time is the meeting
today? Msg.Send
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IMessage Interface Mail a web page with
attachment
Set Msg CreateObject(CDO.Message) Set
Msg.Configuration myConfig Msg.To
jason_at_samples.microsoft.com Msg.Subject
Todays Top Stories Msg.CreateMHTMLBody
http//www.msnbc.com/news/311517.asp Msg.AddAtta
chment D\news.txt Msg.Send
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IMessage Interface
Mail This Page To a Friend Button
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IBodyPart InterfaceOverview

• Handles MIME body parts
• Supported by all MIME-based objects
• ADO Stream access
• Full stream, de/encoded
• Collection for access to child body parts
• ADO Fields collection provides access to headers,
  properties

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IBodyPartExposing the MIME hierarchy
MIME MessageContent-Type multipart/mixed
Content-Type multipart/alternative
Content-Type text/plain
Content-Type text/html
Content-Type application/msword
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IBodyPartLoading text
Content-Type multipart/alternative
Content-Type text/plain
Content-Type text/html
Set Msg CreateObject(CDO.Message) Set Bp
Msg.Bodypart Bp.ContentMediaType
multipart/alternative Set NewBp
Bp.Bodyparts.Add NewBp.ContentMediaType
text/plain Set Strm NewBp.GetDecodedContentStr
eam Strm.Type adTypeText Strm.Position
0 Strm.LoadFromFile D\plaintext.txt Strm.Flush
Set NewBp Bp.Bodyparts.Add NewBp.ContentMediaTy
pe text/html Set Strm NewBp.GetDecodedConten
tStream Strm.Type adTypeText Strm.Position
0 Strm.LoadFromFile D\htmltext.txt Strm.Flush
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MIME Body Parts

• MIME Viewer Demo

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IDataSourceOverview

• Provides access through CDO to data sources
• Open data
• Save data
• Indicates dirty state
• Allows you to manipulate content with the right
  object

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IDataSourceAccessing mail from a folder
Set conn CreateObject(ADODB.Connection) Set
msg CreateObject(CDO.Message) Conn.provider
exoledb.datasource Conn.ConnectionString
file//./backofficestorage/mail.microsoft.com/pu
blic/discuss Conn.Open Set rs conn.execute
Select chr(34) DAVhref chr(34)
from scope(shallow traversal of
file//./backofficestorage/mail.microsoft.com/pub
lic/discuss) While not rs.EOF msg.DataSource.Op
en rs(DAVhref),conn msg.Attachments.DeleteAll
msg.DataSource.Save rs.MoveNext Wend
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IDataSourceEmbedded messages
RFC 822 MessageContent-Type multipart/mixed
Content-Type text/plain
Content-Type message/rfc822
Sub AppendToEmbeddedSubject(Msg,Subject) Set
EmbdMsg CreateObject(CDO.Message) For
each bp in Msg.BodyPart.BodyParts If
Bp.ContentMediaType message/rfc822
then EmbdMsg.DataSource.Open bp,
IBodyPart EmbdMsg.Subject EmbdMsg.Subject
Subject EmbdMsg.DataSource.Save End
If Next End Sub
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ConfigurationPurpose

• Specifies user options
• Display name
• server configuration
• Shared among CDO objects
• Use in ASPs
• One Configuration object per user
• Should be application-scoped

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ConfigurationUsing the configuration object
Set Msg CreateObject(CDO.Message) Set Config
CreateObject(CDO.Configuration) Config.Fields
(cdoSMTPUserEmailAddress) jeff_at_samples.micros
oft.com Config.Fields(cdoSendUsingMethod)
cdoSendUsingExchange Config.Fields.Update Set
Msg.Configuration Config
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IAddressee Overview

• Supported by the Addressee object
• Supports name resolutionon a single name
• Resolve without creating a message
• Supports ambiguous name resolution
• Get free/busy information

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CDO and EventsTransport and Store

• SMTP and NNTP Transport events
• Events return CDO Messages
• Exchange Store Events
• Use CDO to manipulate content when messages are
  created, moved, deleted or saved
• Sinks can be scripts, Visual Basic or Visual C
  DLLs

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CDO Messaging

• Demo

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CDO Messaging Review

• Exchange 2000 natively supports MIME content
• CDO exposes MIME to the developer
• Access to body parts, Streams, Fields
• IDataSource for access to in-memory and stored
  data
• ADO Integration
• ADO Streams, Fields, Recordsets
• ADO for folder navigation

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Questions?
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(No Transcript)