我长期潜伏,这是我的第一个问题。我只有很少的C#经验,所以请放轻松!
我正在尝试在Oxyplot中配置TrackerFormatString,以便为特定的值显示特定的字符串。我的代码如下所示:
private void addSeriesToGraph(KeyValuePair<Tuple<string, List<KeyValuePair<long, string>>>, ConcurrentStack<DataPoint>> series)
{
Graph.Series.Add(
new LineSeries()
{
TrackerFormatString = "{0}\n{1}: {2:hh\\:mm\\:ss\\.fff}\nY: {4}"
+ ((series.Key.Item2.Count > 0)? " (" + series.Key.Item2.First(x => x.Key.ToString() == "{4}").Value + ")" : ""),
Title = series.Key.Item1,
ItemsSource = series.Value,
}
);
}
我的问题是我的条件语句中的“ {4}”不像第一个那样解释:它应包含当前DataPoint的Y值,但应解释为文字“ {4}”。
有人知道如何实现我想要做的事吗?
如果您知道更简单的方法,我也会考虑的! ;-)
最诚挚的问候,
解决该问题的一种方法是,通过扩展IDataPointProvider来定义自己的自定义DataPoint,并使用其他字段包括自定义描述。例如
public class CustomDataPoint : IDataPointProvider
{
public double X { get; set; }
public double Y { get; set; }
public string Description { get; set; }
public DataPoint GetDataPoint() => new DataPoint(X, Y);
public CustomDataPoint(double x, double y)
{
X = x;
Y = y;
}
}
现在,您可以将addSeriesToGraph
方法修改为
private void addSeriesToGraph(KeyValuePair<Tuple<string, List<KeyValuePair<long, string>>>, ConcurrentStack<CustomDataPoint>> series)
{
foreach (var dataPoint in series.Value)
{
dataPoint.Description = series.Key.Item2.Any() ? series.Key.Item2.First(x => x.Key == dataPoint.Y).Value:string.Empty;
}
Graph.Series.Add(
new OxyPlot.Series.LineSeries()
{
TrackerFormatString = "{0}\n{1}: {2:hh\\:mm\\:ss\\.fff}\nY: {4} {Description}",
Title = series.Key.Item1,
ItemsSource = series.Value,
}
);
}