ProgressBar for multiple WebBrowser instances

开发者_StackOverflow社区How can I aggregate the CurrentProgress properties of multiple (dynamic amount) of WebBrowsers together so that a ProgressBar will look accurate?

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if (currentProgressBar != null)
        {
            (currentProgressBar as ToolStripProgressBar).Maximum = (currentProgressBar as ToolStripProgressBar).Maximum;
            (currentProgressBar as ToolStripProgressBar).Value = preValue + ((100 * (Int32)e.CurrentProgress) / (Int32)e.MaximumProgress);
            if (e.CurrentProgress >= e.MaximumProgress)
            {
                preValue = (currentProgressBar as ToolStripProgressBar).Value;
            }
        }

This was how i was able to get the progress bar to display correctly for multiple web browser controls.