ewinform中OxyPlot的X轴文本45°显示

可以通过设置Axis.TitleOrientation和Axis.LabelAngle属性来实现。

示例代码：

var xaxis = new CategoryAxis
{
    Position = AxisPosition.Bottom,
    ItemsSource = new List<string> { "A", "B", "C", "D", "E", "F", "G" },
    Title = "X Axis Title",
    TitleOrientation = 45, // 设置标题倾斜角度
    LabelAngle = 45 // 设置标签倾斜角度
};

var yaxis = new LinearAxis
{
    Position = AxisPosition.Left,
    Title = "Y Axis Title"
};

var plotModel = new PlotModel
{
    Title = "Example Plot",
    Axes = { xaxis, yaxis }
};

var series = new LineSeries
{
    MarkerType = MarkerType.Circle,
    MarkerSize = 4,
    MarkerStroke = OxyColors.White,
    MarkerFill = OxyColors.Green,
    Color = OxyColors.SkyBlue,
    ItemsSource = new List<DataPoint>
    {
        new DataPoint(0, 0),
        new DataPoint(1, 5),
        new DataPoint(2, 7),
        new DataPoint(3, 2),
        new DataPoint(4, 4),
        new DataPoint(5, 6),
        new DataPoint(6, 9)
    }
};

plotModel.Series.Add(series);

var plotView = new PlotView
{
    Model = plotModel
};

this.Content = plotView;

结果：