[Not a question] background worker not working properly

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actually i have 120 records in database when i run my application some time it will hang my application so i need to run that method at background of my application.

please please help me....

Posted 27-Nov-13 20:18pm

hareshdgr8

Updated 27-Nov-13 20:33pm

Sergey Alexandrovich Kryukov

v2

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Sergey Alexandrovich Kryukov 28-Nov-13 2:32am

Help with what? You say nothing except some false statement. If you don't understand how to use some class properly, it does not mean it does not work. Look: no information, no help.
—SA

hareshdgr8 28-Nov-13 2:36am

i will sent you code please check it

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
BGW.WorkerReportsProgress = True
BGW.WorkerSupportsCancellation = True
BGW.RunWorkerAsync()
End Sub

Private Sub BGW_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BGW.DoWork
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = False
getDatafromLoad()

System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = True

End Sub

Private Sub BGW_RunWorkerCompleted(ByVal sender As System.Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BGW.RunWorkerCompleted
If e.Cancelled = True Then
'lblPercent.Text = "Operation Cancelled"
MsgBox("Operation Canceled")
'WorkEventRunning = False
ElseIf e.Error IsNot Nothing Then
'lblPercent.Text = "Failed" 'e.Error.Message.ToString
Else
MsgBox("Done")

End If
End Sub

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-11-27T21:24:00

You cannot call any instance methods or properties of currently executing UI from any thread other then UI thread. If you need to update UI from such non-UI thread, you need to use UI thread invocation mechanism. Please see my past answers:
Control.Invoke() vs. Control.BeginInvoke()[^],
Problem with Treeview Scanner And MD5[^].

And I would advise to never disable the check for illegal cross-thread calls. This is unsafe practice. You don't have any serious reason to use it.

—SA

F. Xaver · Answer 2 · 2013-11-27T20:35:00

Solution 1

http://www.dreamincode.net/forums/topic/88605-the-background-worker/[^]

BackgroundWorker Class Sample for Beginners[^]

maybee check thoose links..
but next time you could google them yourself ^^

Posted 27-Nov-13 20:35pm

F. Xaver