我需要获取图表中AxisY和AxisY2的位置。我想利用此信息做很多事情。但是，作为一个简单的示例，我只想在两个y轴之间绘制一条水平线，但不想让它延伸到它们之外。
使用AxisX.Minimum和Maximum可以工作，只要所有值都显示在图表上即可。但是，如果图表有滚动条，则线条会延伸到axisY的左侧或axisY2的右侧，具体取决于图表的滚动位置。因此，我需要的是所显示的AxisY和AxisY2的位置。

public Form1() 
{
    InitializeComponent();

    // Add an event handler
    this.chart1.Paint += new PaintEventHandler(this.DrawLine);

    // Add some values
    for (int value = 0; value <= 10; value++)
        chart1.Series[0].Points.AddXY(value, value);

    // DrawLine no longer works when a scroll bar is added,
    //chart1.ChartAreas[0].AxisX.ScaleView.Zoom(0, 5);
}

// Draw a line from axisY to axisY2
private void DrawLine(object sender, PaintEventArgs e) 
{
    // Get the left and right edges of the values
    // This only works if all of the values appear on the chart at the same time, ie. there is no scroll bar
    // How can I find the locations of axisY and axisY2 as drawn on the chart?
    int axisYLocation = (int)chart1.ChartAreas[0].AxisX.ValueToPixelPosition(chart1.ChartAreas[0].AxisX.Minimum);
    int axisY2Location = (int)chart1.ChartAreas[0].AxisX.ValueToPixelPosition(chart1.ChartAreas[0].AxisX.Maximum);

    e.Graphics.DrawLine(new Pen(Color.Red, 5), new Point(axisYLocation, 50), new Point(axisY2Location, 50)); 
}