[RESOLVED] Threading & Accessing controls repeatidly.

[kayleigh]

Hi, Whats the best way to handle updating the UI lots of times from a worker thread. Depending on speed the UI may need updating 3/4 times in a second. Say if the overall task takes 1 minute to complete, we could have over 100 updates in that given time.

My problem is it feels like i am creating a worker thread just to constantly jump back to the UI thread.

do you think the SynchronizationContext class would be better suited then what i am doing below.

Public Class MainForm
 
    Private Event SomeThingChnaged As EventHandler(Of SomeThingChnagedEventArghs)
 
    Private Sub StartButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StartButton.Click
        Dim t As New System.Threading.Thread(AddressOf DoWork)
        t.Start()
    End Sub
 
    Private Sub DoWork()
        ' Do work
        RaiseEvent SomeThingChnaged(Me, New SomeThingChnagedEventArghs("Data"))
        'do work
        RaiseEvent SomeThingChnaged(Me, New SomeThingChnagedEventArghs("Data"))
        ' and so on
    End Sub
 
    Private Sub UpdateInterface(ByVal sender As Object, ByVal e As EventArgs) Handles Me.SomeThingChnaged
        If Me.StatusTextBox.InvokeRequired Then
            Me.StatusTextBox.Invoke(New Action(Of Object, EventArgs)(AddressOf UpdateInterface), sender, e)
        Else
            Dim value As String = DirectCast(sender, SomeThingChnagedEventArghs).Value
            Me.StatusTextBox.AppendText(value & vbNewLine)
        End If
    End Sub
 
End Class