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Editorial Team
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Asked: 2026-06-12T18:59:38+00:00

I’ve created a chart in windows forms where the X axis has DateTime values

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I’ve created a chart in windows forms where the X axis has DateTime values (hh:mm:ss). I’d like to add a fixed line to the chart on a certain value – for example, have a line on the grid for X = 07:00:00. Is this possible? Can I put in multiple such lines?

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  1. Editorial Team

    Thanks to Dominique, I poked around for some StripLine examples and eventually this is the code I used:

    StripLine stripLine = new StripLine();
// highlight a strip of 8 hours in the X axis
stripLine.StripWidth = 8;
stripLine.StripWidthType = DateTimeIntervalType.Hours;
stripLine.BackColor = System.Drawing.Color.PapayaWhip;
stripLine.BorderColor = System.Drawing.Color.LightSeaGreen;
stripLine.BorderWidth = 2;
// start the highlighting 7 hours in (from 07:00 to 15:00)
stripLine.IntervalOffset = 7;
stripLine.IntervalOffsetType = DateTimeIntervalType.Hours;
// repeat this strip every 1 day
stripLine.Interval = 1;
stripLine.IntervalType = DateTimeIntervalType.Days;
this.TopOfBookChart.ChartAreas[0].AxisX.StripLines.Add(stripLine);

    With it I produced the following graph.

    You can find another (simpler) example here: Win Form Charting Question

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