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Reporting on sepeate thread (system.threading.thread)
posted

Has anyone else had issues when printing a xamDataGrid and trying to show progress bar whilst exporting / printing / previewing on separate thread? Im getting the thread exception error (Exception has been thrown by the target of an invocation.) (The calling thread cannot access this object because a different thread owns it.)

Thanks

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  • 525
    Suggested Answer
    posted

    You need to get yourself back into the UI thread before showing the window... here is some code to do that:

     

    private delegate void DelegateLaunch();

    private void LaunchWindowInUIThread()
    {
        if (_myWindow != null && _myWindow.Dispatcher.Thread != Thread.CurrentThread)
        {
            _myWindow.Dispatcher.BeginInvoke(new DelegateLaunch(LaunchWindow));
        }
        else
        {
            LaunchWindow();
        } 
    }

    private void LaunchWindow()
    {
        _myWindow.ShowDialog();
    }

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