Question

我创建了一个柱形图，我根本没有在X轴上获得标签。

这是我的图表的截图。我在屏幕截图的底部添加了一行，以显示我的预期。

这是我的代码：

private void Form1_Load(object sender, EventArgs e)
{
    string series = "TestData";

    // Clear Series
    chart.Series.Clear();

    // Add new Sereis and set XValueType
    chart.Series.Add(series);
    chart.Series[series].XValueType = ChartValueType.DateTime;

    // Add data points to Series
    chart.Series[series].Points.AddXY(new DateTime(2008, 12, 31).ToOADate(), 49.91);
    chart.Series[series].Points.AddXY(new DateTime(2009, 12, 31).ToOADate(), 102.05);
    chart.Series[series].Points.AddXY(new DateTime(2010, 12, 31).ToOADate(), 15.84);
    chart.Series[series].Points.AddXY(new DateTime(2011, 12, 31).ToOADate(), 29.12);
    chart.Series[series].Points.AddXY(new DateTime(2012, 12, 31).ToOADate(), 3.3);
    chart.Series[series].Points.AddXY(new DateTime(2013, 12, 31).ToOADate(), 31.09);
    chart.Series[series].Points.AddXY(new DateTime(2014, 12, 31).ToOADate(), 5.44);

    // Set color and dash style of Major Grid
    chart.ChartAreas[0].AxisY.MajorGrid.LineColor       = Color.Gray;
    chart.ChartAreas[0].AxisY.MajorGrid.LineDashStyle   = ChartDashStyle.Dash;
    chart.ChartAreas[0].AxisX.MajorGrid.LineColor       = Color.Gray;
    chart.ChartAreas[0].AxisX.MajorGrid.LineDashStyle   = ChartDashStyle.Dash;

    // Set Interval for X-Axis
    chart.ChartAreas[0].AxisX.LabelStyle.Format         = "yyyy";
    chart.ChartAreas[0].AxisX.Interval                  = 1;
    chart.ChartAreas[0].AxisX.IntervalType              = DateTimeIntervalType.Years;
    chart.ChartAreas[0].AxisX.IntervalOffsetType        = DateTimeIntervalType.Years;
}

我已经尝试使用IntervalOffset，但它没有完成任务。

有人知道如何解决这个问题吗？

非常感谢康斯坦丁

Answer 1

首先，您必须将日期更改为一年中的第一天而不是最后一天，并且您必须将属性IsXValueIndexed设置为true，如：

    private void Form1_Load(object sender, EventArgs e)
    {
        string series = "TestData";

        // Clear Series
        chart.Series.Clear();

        // Add new Sereis and set XValueType
        chart.Series.Add(series);
        chart.Series[series].XValueType = ChartValueType.Date;
        chart.Series[series].IsXValueIndexed = true;

        // Add data points to Series
        chart.Series[series].Points.AddXY(new DateTime(2008, 1, 1).ToOADate(), 49.91);
        chart.Series[series].Points.AddXY(new DateTime(2009, 1, 1).ToOADate(), 102.05);
        chart.Series[series].Points.AddXY(new DateTime(2010, 1, 1).ToOADate(), 15.84);
        chart.Series[series].Points.AddXY(new DateTime(2011, 1, 1).ToOADate(), 29.12);
        chart.Series[series].Points.AddXY(new DateTime(2012, 1, 1).ToOADate(), 3.3);
        chart.Series[series].Points.AddXY(new DateTime(2013, 1, 1).ToOADate(), 31.09);
        chart.Series[series].Points.AddXY(new DateTime(2014, 1, 1).ToOADate(), 5.44);

        // Set color and dash style of Major Grid
        chart.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.Gray;
        chart.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = ChartDashStyle.Dash;
        chart.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.Gray;
        chart.ChartAreas[0].AxisX.MajorGrid.LineDashStyle = ChartDashStyle.Dash;

        // Set Interval for X-Axis
        chart.ChartAreas[0].AxisX.LabelStyle.Format = "yyyy";
        chart.ChartAreas[0].AxisX.Interval = 1;
        chart.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Years;
        chart.ChartAreas[0].AxisX.IntervalOffsetType = DateTimeIntervalType.Years;            

    }

AxisX上带有DateTime的柱形图显示错误的日期

1 个答案: