本文看了博客WPF编程，Live Charts使用说明（2）------使用_func<chartpoint, string> labelpoint-CSDN博客，这里作为笔记用。
1.前端代码
前端XAML文件代码如下：
<Window x:Class="livechart1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:livechart1"
xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="40"/>
<RowDefinition/>
</Grid.RowDefinitions>
<StackPanel Orientation="Horizontal" VerticalAlignment="Center" Margin="10 0 0 0">
<Button Width="80" Height="30" Margin="5 0 0 0" Content="折线图" Click="Button_Click"/>
<Button Width="80" Height="30" Margin="5 0 0 0" Content="直方图" Click="Button_Click_1"/>
<Button Width="80" Height="30" Margin="5 0 0 0" Content="饼状图" Click="Button_Click_2"/>
</StackPanel>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<lvc:CartesianChart Name="s1" LegendLocation="Top">
<lvc:CartesianChart.AxisY>
<lvc:Axis Name="s1y" Title="分数" MinValue="0"></lvc:Axis>
</lvc:CartesianChart.AxisY>
<lvc:CartesianChart.AxisX>
<lvc:Axis Name="s1x" Title="区域" ></lvc:Axis>
</lvc:CartesianChart.AxisX>
</lvc:CartesianChart>
<lvc:CartesianChart Name="s2" Grid.Column="1" LegendLocation="Top">
<lvc:CartesianChart.AxisX>
<lvc:Axis Name="s2y" Title="区域" ></lvc:Axis>
</lvc:CartesianChart.AxisX>
<lvc:CartesianChart.AxisY>
<lvc:Axis Name="s2x" Title="分数" MinValue="0"></lvc:Axis>
</lvc:CartesianChart.AxisY>
</lvc:CartesianChart>
<lvc:PieChart Name="s3" LegendLocation="Top" Grid.Column="2"/>
</Grid>
</Grid>
</Window>以上代码中，<Grid>上面的代码是自己生成的，里面有一行是我们加入的，这一行是：
xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"<Grid> ...</Grid>之间的所有代码复制到里面就行。
2.后端代码
在cs文件中的代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using LiveCharts;
using LiveCharts.Wpf;
using static System.Net.WebRequestMethods;
namespace livechart1
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
//1.折线图
private void Button_Click(object sender, RoutedEventArgs e)
{
SeriesCollection series = new SeriesCollection
{
new LineSeries
{
Title = "深圳",
Values = new ChartValues<double> {4,6,5,2,7}
},
new LineSeries
{
Title = "广州",
Values = new ChartValues<double> { 6, 7, 3, 4 ,6 }
}
};
//x轴
string[] Labels = new[] { "2011", "2012", "2013", "2014", "2015" };
s1.Series = series;
s1x.Labels = Labels;
s1y.Separator.Step = 1;
s1y.LabelFormatter = new Func<double, string>((value) =>
{
return value.ToString();
});
}
//2.柱状图
private void Button_Click_1(object sender, RoutedEventArgs e)
{
SeriesCollection SeriesCollection = new SeriesCollection
{
new ColumnSeries
{
Title = "深圳",
Values = new ChartValues<double> { 10, 50, 39, 50 }
},
new ColumnSeries
{
Title = "广州",
Values = new ChartValues<double> { 11, 56, 42 }
}
};
string[] Labels = new[] { "2011", "2012", "2013", "2014", "2015" };
s2.Series = SeriesCollection;
s2x.Labels = Labels;
s2y.Separator.Step = 1;
}
// 3.饼图
private void Button_Click_2(object sender, RoutedEventArgs e)
{
SeriesCollection SeriesCollection = new SeriesCollection();
SeriesCollection.Add(new PieSeries()
{
Title = "高一(1)班",
Values = new ChartValues<int>() { 30 },
DataLabels = true,
LabelPoint = new Func<ChartPoint, string>((chartPoint) =>
{
return string.Format("{0}{1} ({2:P})", chartPoint.SeriesView.Title, chartPoint.Y, chartPoint.Participation);
})
});
SeriesCollection.Add(new PieSeries()
{
Title = "高一(2)班",
Values = new ChartValues<int>() { 50 },
DataLabels = true,
LabelPoint = new Func<ChartPoint, string>((chartPoint) =>
{
return string.Format("{0}{1} ({2:P})", chartPoint.SeriesView.Title, chartPoint.Y, chartPoint.Participation);
})
});
SeriesCollection.Add(new PieSeries()
{
Title = "高一(3)班",
Values = new ChartValues<int>() { 20 },
DataLabels = true,
LabelPoint = new Func<ChartPoint, string>((chartPoint) =>
{
return string.Format("{0}{1} ({2:P})", chartPoint.SeriesView.Title, chartPoint.Y, chartPoint.Participation);
})
});
s3.Series = SeriesCollection;
}
}
}在以上代码中，头文件有LiveCharts，这个我们需要进入 工具--->NuNet 包管理器--->管理解决方案，进入后搜索LiveCharts，然后点击安装即可。
3.最终效果
最后运行代码，运行结果如下：
