VS2010 Chart控件，如何显示空白图表? [英] VS2010 Chart control, how to display a blank chart?

问题描述

我正在尝试在 Windows 窗体上使用图表控件并使其工作，绘制一些实时数据，但是在数据到达之前没有显示任何内容.我想显示一个 X Y 为 10 30 的空图，但如果值高于此值，图仍具有自动范围.

I'm trying to use the chart control on a windows form and have it working, plotting some real time data, however before the data arrives nothing is displayed. I would like to show an empty graph with an X Y of 10 30 but still have the graph auto range if values go above this.

我找不到可以显示空白"图形的属性，这可能吗?如果可以，怎么办?

I cannot find a property to show the "blank" graph it this possible and if so how?

谢谢

推荐答案

您可以通过使线条颜色透明来隐藏系列的所有数据.如果您还将其 LegendText 设置为"，则您只能看到轴刻度.您可以通过添加几个点并设置最小值和最大值来控制它们:

You can hide all data of a Series by making its line color Transparent. If you also set its LegendText to be " " all you can see are the Axis ticks. you can control them by adding a few Points and by setting the Minimum and Maximum values:

// short reference for our dummy:
Series S0 = chart1.Series[0];
// a simple type
S0.ChartType = SeriesChartType.Line;
// set 10 point with x-values going from 0-100 and y-values going from 1-10:
for (int i = 0; i < 100; i +=10)  S0.Points.AddXY(i , i / 10);
// or add only a few, e.g. the first and last points:
//S0.Points.AddXY(100, 10);
//S0.Points.AddXY(0, 10);
// hide the line:
S0.Color = Color.Transparent;
// hide the legend text (it will still take up a little space, though)
S0.LegendText = " ";
// limit the axis to the target values
chart1.ChartAreas[0].AxisX.Maximum = 100;
chart1.ChartAreas[0].AxisX.Minimum = 0;

结果看起来像一个空图表:

The result looks like an empty chart:

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