ASP Lecture 3, Installable Components

1
ASP Lecture 3, Installable Components

• ASP programs have access to intrinsic objects
  (Request, Response, Application, Session, Server)
  
• Other objects can be installed
• Standard library
• Built for a particular application
• COM is the interface standard for these objects
  which have methods and properties
• Examples (ASP in a Nutshell, Ch. 11-21)
• Collaboration Data Objects CDONTS
• ActiveX Data Objects ADODB
• Others Ad Rotator, Content Linking, Content
  Rotator, Counters, File Access, Page Counter,
  Permission Checker

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Collaboration Data Objects (CDO)

• CDO adds messaging functions to applications.
  CDONTS is a COM library for NT designed to send
  mail through SMTP
• To create the CDONTS object
• Dim objCDOMail 'The CDO object
• Set objCDOMail Server.CreateObject("CDONTS.NewMa
  il")
• This has
• Attributes From, To, Subject, Body, Cc, Bcc,
  AttachFile, ...
• Method Send
• Procedure
• assign values to the attributes
• apply Send

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Sending a simple message

• Dim objCDOMail
• Set objCDOMail
• Server.CreateObject("CDONTS.NewMail")
• objCDOMail.To ashilepsly_at_wells.edu
• objCDOMail.From cshilepsly_at_wells.edu
• objCDOMail.Subject Dinner
• objCDOMail.Body Lets go out
• objCDOMail.Send
• Example http//www.asp101.com/samples/email_cdo.a
  sp

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File Access

• Access to a file system via the FileSystemObject
• Server.CreateObject(Scripting.FileSystemObject)
  
• File system has folders, drives, files
• Methods CreateFolder, CreateTextFile,
  DriveExists, DeleteFile, GetFile, OpenTextFile,
  ...
• Text file methods Read, ReadLine, Write,
• Examples
• http//www.asp101.com/samples/counter.asp
• http//www.asp101.com/samples/modified.asp
• http//www.asp101.com/samples/textfile.asp