Backgroundwoker Report Progress?

Mar 9, 2012

i have problem with the reportprogress / progress changed.i use the backgroundworker in a form class named frame menu. the do work sub of the backgroundworker calls a sub X in a public module.

from the backgroundworker do work sub i am able to use the backgroundworker.reportprogress / backgroundworker progress change method and this is displayed on my form.

when i am using the backgroundworker.reportprogress / backgroundworker progress change method from the sub X it does not display on my form.

when i debug the code it calls the backgroundworker.reportprogress / backgroundworker progress change method correctly in the sub X but just does not display it on the form.

[Code]...

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VS 2008 Implement A BGW And Want To Report Progress To A Progress Bar For TextFieldParser Program?

Feb 14, 2012

I am trying to implement a BGW and want to report progress to a progress bar for my TextFieldParser program, sometimes if your opening very large files it takes a while and I would like the user to be able to see the progress and have some interaction so they know the program is still running I am a little hung up on what to in the reportprogress

I have:

worker.ReportProgress(0, myReader.ReadFields())

and its not doing anything, I didnt expect it too since ReadFields is an array

parser
Private Sub BackgroundWorker1_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
Dim worker As System.ComponentModel.BackgroundWorker = DirectCast(sender, System.ComponentModel.BackgroundWorker)

[code]....

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I need to report progress changed. Consider the following code:

Public Class Calculator
Public Event CalculationProgress (ByVal sender As Object, ByVal e As MyCalculationProgressEventArgs)
Public Function Calculate(..)..
' Perform calculation here ...

[code]....

How and where should I subscribe to CalculationProgress event to call

calculationWorker.ReportProgress(MyCalculationProgressEventArgs.Percent)

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I have some issues with background worker progress reporting functionality. I'm implementing a progress indicator and even if I marked the backgroundworker as report progress (true), it won't report progress until it finish the job.

The code is like this:

Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
action_1()

[code]....

The result is as expected (label1 with 100 value) but only when worker finished all the steps. If I'm triggering a messagebox in ProgressChange I see two message windows at the end of DoWork handle.

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Private
Sub CmdOK_Click(ByVal
sender As System.Object,

[code]....

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logRTB.AppendText(message & vbCrLf)
End Sub

When I call this from Main.vb I use:
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When I call it OtherFile.vb:
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Public Sub OnCopyingFile(ByVal sender As Object, ByVal e As CopyingFileEventArgs)
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[code]....

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[Code]...

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[code]...

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[code]...

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