CODEWITHSUNDEEP
vb.net
Krešimir Čulina
Krešimir Čulina

Reputation: 93

Progressbar not being updated by backgroundworker

I'm trying to make the progress bar show the current progress but for some reason the progress bar is just shown there and nothing is happening. I'm using the following code

Private Sub BuildApp_ProgressChanged(sender As Object, e As ProgressChangedEventArgs) Handles BuildApp.ProgressChanged
        Me.ProgressBar1.Value = e.ProgressPercentage
End Sub

I checked if the background worker's property is set to report status and it is set to "Yes". Also, I checked the progress bar's style, it's set to Blocks. Any help?

Upvotes: 0

Views: 430

Answers (1)

Idle_Mind
Idle_Mind

Reputation: 39152

Here's a simple example...

Public Class Form1

    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        Button1.Enabled = False
        BuildApp.RunWorkerAsync()
    End Sub

    Private Sub BuildApp_DoWork(sender As System.Object, e As System.ComponentModel.DoWorkEventArgs) Handles BuildApp.DoWork
        Dim someTotal As Integer = 12
        For x As Integer = 1 To someTotal
            System.Threading.Thread.Sleep(1000) ' simulated work
            BuildApp.ReportProgress(x / someTotal * 100) ' pass the current percentage value
        Next
    End Sub

    Private Sub BuildApp_ProgressChanged(sender As Object, e As System.ComponentModel.ProgressChangedEventArgs) Handles BuildApp.ProgressChanged
        Me.ProgressBar1.Value = e.ProgressPercentage
    End Sub

    Private Sub BuildApp_RunWorkerCompleted(sender As Object, e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BuildApp.RunWorkerCompleted
        MessageBox.Show("Done!")
        Button1.Enabled = True
    End Sub

End Class

Upvotes: 4

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