Winforms 图表:如何启用背景色规 [英] Winforms chart: how to enable background color gauge

问题描述

我正在寻找一种方法来在 Winform 图表控件库中启用自定义背景色标.下面是一个例子:

看到背景中的绿色、黄色和红色了吗?

现在，我需要一种通过控制起始/结束 Y 值、颜色本身以及不同颜色的数量来自定义背景色标的方法.

提前致谢！

解决方案

您可以通过添加

I'm looking for a way to enable custom background color gauge in the Winform chart control library. Here is an example:

See the green, yellow, and red color in the background?

Now, I need is a way to customize the background color gauge by controlling the starting/ending Y values, the color itself, as well as the number of different colors.

Thanks in advance!

解决方案

You can do that by adding StripLines to the y-Axis of the ChartArea.

Their positions and sizes are controlled by their StripWidth, Interval and IntervalOffset properties.

All values are set in data values, so in the example above the three lines, bottom to top have StripWidth of 30, 40 and 30; their IntervalOffsets are 0, 30 and 70 and all have an Interval of 0, which means they don't repeat.

Let's try it:

Axis ay = chart1.ChartAreas[0].AxisY;
ay.Minimum = 0;
ay.Maximum = 100;

StripLine sl0 = new StripLine();
sl0.BackColor = Color.FromArgb(64, Color.LightSeaGreen);
sl0.StripWidth = 30;
sl0.IntervalOffset = 0;

StripLine sl1 = new StripLine();
sl1.BackColor = Color.FromArgb(64, Color.LightGoldenrodYellow);
sl1.StripWidth = 40;
sl1.IntervalOffset = 30;

StripLine sl2 = new StripLine();
sl2.BackColor = Color.FromArgb(64, Color.LightSalmon);
sl2.StripWidth = 30;
sl2.IntervalOffset = 70;

chart1.ChartAreas[0].AxisY.StripLines.Add(sl0);
chart1.ChartAreas[0].AxisY.StripLines.Add(sl1);
chart1.ChartAreas[0].AxisY.StripLines.Add(sl2);

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