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How Do I extend the Displayable Area for YAxis Data?

"My data touches the upper boundary of the plot area but that makes the data harder to see. How do I extend the viewable area along the YAxis?"

Assign the YAxis AxisMode property.  By default the ChartYAxisMode property value is Normal and the YAxis data fills the available space.

myChart.PlotArea.YAxis.AxisMode = ChartYAxisMode.Normal;

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If you set the ChartYAxisMode to Extended, additional area is placed above the highest data point to make the chart easier to read.

myChart.PlotArea.YAxis.AxisMode = ChartYAxisMode.Extended;

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