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(VBScript) Async Progress Info Log

Demonstrates checking for progress info updates when running a task asynchronously.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

'  All Chilkat classes can be unlocked at once at the beginning of a program
'  by calling UnlockBundle.  It requires a Bundle unlock code.
set chilkatGlob = CreateObject("Chilkat_9_5_0.Global")
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
If (success <> 1) Then
    outFile.WriteLine(chilkatGlob.LastErrorText)
    WScript.Quit
End If

'  The mailman object is used for sending and receiving email.
set mailman = CreateObject("Chilkat_9_5_0.MailMan")

'  Set the SMTP server and any required settings.
mailman.SmtpHost = "smtp.mymailserver.com"
mailman.SmtpUsername = "myLogin"
mailman.SmtpPassword = "myPassword"
mailman.StartTLS = 1

'  Create a new email object
set email = CreateObject("Chilkat_9_5_0.Email")

email.Subject = "This is a test"
email.Body = "This is a test"
email.From = "Chilkat Support <support@chilkatsoft.com>"
success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com")

'  Call the async version of the SendEmail method to return a task object.
'  The task object is loaded, but is in the Inert state -- meaning it is
'  not yet scheduled to run on Chilkat's background thread pool.
' task is a Chilkat_9_5_0.Task
Set task = mailman.SendEmailAsync(email)
If (task Is Nothing ) Then
    outFile.WriteLine(mailman.LastErrorText)
    WScript.Quit
End If

'  Before starting the task, tell it to keep an in-memory log of what would've been
'  ProgressInfo event callbacks.
task.KeepProgressLog = 1

'  Schedule the task for running on the thread pool.  This changes the task's state
'  from Inert to Live.
success = task.Run()
If (success <> 1) Then
    outFile.WriteLine(task.LastErrorText)

    WScript.Quit
End If

'  The application is now free to do anything else
'  while the email is being sent.

'  For this example, we'll simply sleep and periodically
'  check to see if the SendEmail if finished.  While checking
'  however, we'll report on the progress.
curPctDone = 0

Do While task.Finished <> 1

    If (task.PercentDone <> curPctDone) Then
        curPctDone = task.PercentDone
        outFile.WriteLine(curPctDone & " percent done")
    End If

    '  Check the progress info log.
    '  Emit any log entries..
    Do While (task.ProgressLogSize > 0)
        '  Get the 1st entry, emit it, and then remove it..
        name = task.ProgressInfoName(0)
        value = task.ProgressInfoValue(0)
        outFile.WriteLine(name & ": " & value)
        task.RemoveProgressInfo 0
    Loop

    '  Sleep 100 ms.
    task.SleepMs 100

Loop

'  Just in case there are any remaining entries...
Do While (task.ProgressLogSize > 0)
    '  Get the 1st entry, emit it, and then remove it..
    name = task.ProgressInfoName(0)
    value = task.ProgressInfoValue(0)
    outFile.WriteLine(name & ": " & value)
    task.RemoveProgressInfo 0
Loop

'  A finished task could be one that was canceled, aborted, or truly finished.

'  If the task was "canceled", it was canceled prior to actually starting.  This could
'  happen if the task was canceled while waiting in a thread pool queue to be scheduled by Chilkat's
'  background thread pool scheduler.

'  If the task was "aborted", it indicates that it was canceled while running in a background thread.
'  The ResultErrorText will likely indicate that the task was aborted.

'  If the task "completed", then it ran to completion, but the actual success/failure of the method
'  is determined by the result obtained via a GetResult* method.  (A "completed" task will
'  have a StatusInt equal to 7.   If the task finished, but was not completed, then it must've
'  been aborted or canceled:
If (task.StatusInt <> 7) Then
    outFile.WriteLine("Task did not complete.")
    outFile.WriteLine("task status: " & task.Status)

    WScript.Quit
End If

'  The SendEmail method returns a boolean.  Therefore, after the task is finished,
'  we can get the boolean result by calling GetResultBool.  This is the return value had
'  we called SendEmail synchronously.
success = task.GetResultBool()
If (success <> 1) Then
    '  The task's ResultErrorText contains what would have been in the LastErrorText property had
    '  the SendEmail method been called synchronously.
    outFile.WriteLine(task.ResultErrorText)
Else
    outFile.WriteLine("Email sent asynchronously.")
End If

success = mailman.CloseSmtpConnection()
If (success <> 1) Then
    outFile.WriteLine("Connection to SMTP server not closed cleanly.")

End If


outFile.Close

 

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