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MCL Printer Monitor Component

The Printer Monitor Component is a .NET component which allows you to monitor and administer the print queue from VB.Net, C# or any of the .NET environments.

In addition it provides detailed information about jobs submitted to a print spooler, such as the user name, number of pages, orientation, file name and so on, and the ability to modify some of this information. Using this component it is possible to build powerful print job tracking and related applications in a very short timescale.

Key features

The control raises an event whenever a print job is added, removed or changed on the printer queue which is being monitored.

New in this release

• Added structured exception handling for printer exceptions
  • New class InsufficentPrinterAccessRightsException for attempt to access printer functionality beyond the rights of the logged in user
  • New class InsufficentPrintJobAccessRightsException for attempt to access print job functionality beyond the rights of the logged in user
• Collection class PrintJobs made to support the VB.Net For Each .. Next syntax
• PrintJob members made read/write:
  • Document - The document name reported to the spooler
  • Position - The job position in the print queue (only administrators can change this)
  • NotifyUserName - The user to send printer alerts to
  • Priority - The priority of this print job
• PrinterInformation members made read/write:
  • Comment - The text comment for the printer
  • Location - The location text for the printer
  • SeperatorFilename - The file used as a job seperator
  • Priority - The default priority assigned to jobs queued on this printer

Events

JobAdded

A job has been added to the printer queue being monitored. The details of the job are held in e which is of type PrintJobEventArgs.

  Private Sub PrinterMonitorComponent1_JobAdded(ByVal sender As Object, _
          ByVal e As EventArgs) Handles PrinterMonitorComponent1.JobAdded
    
    '\\ Example: Who sent the job that is being added to the print queue?
    Debug.WriteLn(CType(e, PrintEventArgs).PrintJob.Username
    
  End Sub

JobWritten

A job has been written to the printer attached to the printer queue being monitored. The details of the job are held in e which is of type PrintJobEventArgs.

  Private Sub PrinterMonitorComponent1_JobWritten(ByVal sender As Object , _
          ByVal e As EventArgs) Handles PrinterMonitorComponent1.JobAdded
    
  End Sub

JobDeleted

A job has been removed from the printer queue being monitored. The details of the job are held in e which is of type PrintJobEventArgs.

  Private Sub PrinterMonitorComponent1_JobDeleted(ByVal sender As Object , _
          ByVal e As EventArgs) Handles PrinterMonitorComponent1.JobAdded

  End Sub

Classes

PrinterMonitorComponent

The drop-in component that monitors a given printer's job queue and raises the events accordingly.

PrintEventArgs

Represents the event arguments for the PrinterMonitorComponent job added, written and deleted events.

PrintJob

Represents an individual job on the printer spool queue.

Using the component in your applications

Adding the component to your application

System Requirements

• The printer monitor component requires Windows NT, 2000, XP or 2003 - this type of spooler monitoring is not supported on Windows 98 or Me
• Requires the Microsoft .NET framework 1.0
• Pausing, resuming, deleting and altering the details of a print job can only be done by logged in users that have administrator access