C# 图表Wpf工具包处理程序图形标签

我英语写得不好

我正在使用wpf工具包和linearserie trend

我每天通过linq从数据库中提取几分钟 100 1200 ... 1300

并在x轴的图形上显示它们

我想将此值转换为小时 小时：分钟=1200*60+“：”1200%60

向他们展示x轴

有大量数据时的问题和图形 很难看到，所以我应该使用

xAxis.Interval=sliderIntervalloX.Value

它适用于LineSeries（但对于DateTimeSerie来说太慢）

然后我会截取x上的文字，并写出标签的值

用我上面写的公式

<charting:Chart Name="GraficoTemperatura"
        HorizontalAlignment="Left" Title="Grafico temperatura"
        VerticalAlignment="Top" Background="#FF4CAE78" Height="231.25" Width="576.25">

<chartingToolkit:Chart.Axes>


<chartingToolkit:LinearAxis 
                    x:Name="xAxis"
                    Orientation="X" 
                    ShowGridLines="True"  
                    Location="Bottom" 
                    Title="Minuto della lettura"

                    >
</chartingToolkit:LinearAxis>  

 <charting:LineSeries                
DependentValuePath="Value" 
IndependentValuePath="Key"
ItemsSource="{Binding}" Title="Temperatura (°C)" AnimationSequence="FirstToLast" >

  <!-- style della linea -->
  <chartingToolkit:LineSeries.DataPointStyle>
      <Style TargetType="{x:Type chartingToolkit:LineDataPoint}">
          <Setter Property="Background" Value="Red"/>
          <Setter Property="Visibility" Value="Collapsed"/>
          <Setter Property="Template" Value="{x:Null}"/>
      </Style>
  </chartingToolkit:LineSeries.DataPointStyle>

</charting:LineSeries>


</charting:Chart>

解决方案

xaml资源

<local:RatingToStringConverter x:Key="RatingToStringConverter"/>

<Style x:Key="XAxisLabelStyle" TargetType="chartingToolkit:AxisLabel">
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="chartingToolkit:AxisLabel">
                <!-- <TextBlock Text="{Binding Label, Converter=}"/> -->
                <TextBlock Text="{Binding Converter={StaticResource RatingToStringConverter}}"/>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

---

我的英语写得不好

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            <chartingToolkit:LinearAxis  
                                        x:Name="xAxis"
                                        Orientation="X" 
                                        ShowGridLines="True"  
                                        Location="Bottom" 
                                        Title="Orario della lettura"  
                                        AxisLabelStyle="{StaticResource XAxisLabelStyle}"
                                        >

public class RatingToStringConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            // Validate parameters
            /*if (!(value is double))
            {
                throw new NotSupportedException("Unsupported value type in RatingToStringConverter.");
            }
            */
            // Convert number to string
            //int  idoubleValue = Math.Ceiling ((double)value);
            int  doubleValue = System.Convert.ToInt32(value);
            //int  doubleValue = (int)value;
            string a = (doubleValue / 60).ToString();
            string b = (doubleValue % 60).ToString();

            return a + ":" + b;

        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }