troubleshooting Question How to update UI from task

Avatar of rutledgj
rutledgj asked on
Visual Basic.NET
8 Comments2 Solutions1830 ViewsLast Modified:
Ok. So I'm trying to use the task stuff to do parallel programming. I can't figure out how to update a gui label from a task.  

I have Downloads class with method DownloadPatientData(V as Vendor)    Vendor is a class to hold data.

in main form I have:

 While VendorQueue.Count > 0
                Dim v As Vendor = Nothing
                If VendorQueue.TryDequeue(v) = True Then
                    threadCount += 1
                    Console.WriteLine("Processing Org " & v.Org)
                    v.DrFirstVersion = DrFirstVersion
                    Dim d As New Downloads
                    d.ThreadName = "t" & CStr(threadCount)
                    Dim t As Task = Task.Factory.StartNew(Sub() d.DownloadPatientData(v))        
                End If
            End While

So over in the DownloadPatientData method how can I write back to the gui label (lblStatus)?

In regular threading you could add a event handler.  What do you do here?
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