How do i dynamically call a function with delegates by passing a string to a background thread in vb2005.net?

Question

How do i dynamically call a function with delegates by passing a string to a background thread in vb2005.net?

currently my code is this

Public Sub invertImageBK(ByVal image As Bitmap)
    Dim snxl As System.ComponentModel.BackgroundWorker = createBW()
    snxl.RunWorkerAsync(New ImageProperties(image.Clone, "invertImage", Nothing))
End Sub
Public Sub grayscaleImageBK(ByVal image As Bitmap)
    Dim snxl As System.ComponentModel.BackgroundWorker = createBW()
    snxl.RunWorkerAsync(New ImageProperties(image.Clone, "grayscaleImage", Nothing))
End Sub
Public Sub colorizeImageBK(ByVal image As Bitmap, ByVal colorize As Color)
    Dim snxl As System.ComponentModel.BackgroundWorker = createBW()
    snxl.RunWorkerAsync(New ImageProperties(image.Clone, "colorizeImage", colorize))
End Sub

Private Sub ConvertImage(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs)
    If e.Argument.extra IsNot Nothing Then
        Dim snxl As New twoarg()
    Else

    End If

End Sub

Private Delegate Function onearg(ByVal image As Bitmap) As Bitmap
Private Delegate Function twoarg(ByVal image As Bitmap, ByVal altcolor As Color) As Bitmap

Private Function createBW() As System.ComponentModel.BackgroundWorker Dim cbs As New System.ComponentModel.BackgroundWorker AddHandler cbs.DoWork, AddressOf ConvertImage Return cbs End Function

Public Structure ImageProperties Dim img As Bitmap Dim filt As String

Public Sub New(ByVal image As Bitmap, ByVal filter As String, ByVal extra As Object)
    img = image.Clone
    filt = filter
End Sub

End Structure

and ultimatly in the end it will raise an event to give me my result.

Answer 1

Here's what I do:

Private Function oneargImplementation(ByVal image As Bitmap) As Bitmap

End Function

Public Sub Test()

Private ArgOne as onearg = _
 new onearg(AddressOf oneargImplementation)

Dispatcher.Invoke(ArgOne, Windows.Threading.DispatcherPriority.Loaded, New Object() {sender, e}) End Sub