UpBrushDX

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protected override void OnRender(ChartControl chartControl, ChartScale chartScale, ChartBars chartBars)  
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{  
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  for (int idx = chartBars.FromIndex; idx <= chartBars.ToIndex; idx++)  
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      {  
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          double     closeValue             = bars.GetClose(idx);  
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          double     openValue               = bars.GetOpen(idx);  
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          // Set the brush of the current candle to UpBrushDX or DownBrushDX, depending on the  
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          // bar direction  
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          Brush brush = closeValue >= openValue ? UpBrushDX : DownBrushDX;  
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      }  
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}