项目结构调整

Others/Live-Charts-master/Examples/UWP/CartesianChart/Linq/City.cs

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+using System;
+
+namespace UWP.CartesianChart.Linq
+{
+    public class City
+    {
+        public Guid Id { get; set; }
+        public string Name { get; set; }
+        public double Population { get; set; }
+        public double Area { get; set; }
+        public string Country { get; set; }
+    }
+}

Others/Live-Charts-master/Examples/UWP/CartesianChart/Linq/DataBase.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Threading.Tasks;
+using Windows.Storage;
+
+namespace UWP.CartesianChart.Linq
+{
+    public static class DataBase
+    {
+        public static City[] Cities { get; private set; }
+
+        public static async Task Initialize()
+        {
+            var file = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///cities.csv"));
+            var stream = await file.OpenStreamForReadAsync();
+            var reader = new StreamReader(stream);
+
+            var read = new List<City>();
+
+            while (!reader.EndOfStream)
+            {
+                var line = reader.ReadLine();
+                if (line != null)
+                {
+                    var values = line.Split(',');
+
+                    read.Add(new City
+                    {
+                        Name = values[0],
+                        Population = double.Parse(values[1], CultureInfo.InvariantCulture),
+                        Area = double.Parse(values[2], CultureInfo.InvariantCulture),
+                        Country = values[3]
+                    });
+                }
+            }
+
+            Cities = read.ToArray();
+        }
+    }
+}

Others/Live-Charts-master/Examples/UWP/CartesianChart/Linq/LinqExample.xaml

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+<Page
+    x:Class="UWP.CartesianChart.Linq.LinqExample"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:UWP.CartesianChart.Linq"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:lvc="using:LiveCharts.Uwp"
+    mc:Ignorable="d">
+
+    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+        </Grid.RowDefinitions>
+        <StackPanel Grid.Row="0" Orientation="Horizontal">
+            <TextBlock VerticalAlignment="Center" Margin="10 0">Search</TextBlock>
+            <TextBox Name="Query" VerticalContentAlignment="Center" Width="100" Height="30" 
+                     TextChanged="TextBoxBase_OnTextChanged"></TextBox>
+        </StackPanel>
+        <lvc:CartesianChart Grid.Row="1" >
+            <lvc:CartesianChart.Series>
+                <lvc:ColumnSeries Title="2016 Population by City" 
+                                  Values="{Binding Results}"
+                                  Configuration="{Binding Mapper}"/>
+            </lvc:CartesianChart.Series>
+            <lvc:CartesianChart.AxisX>
+                <lvc:Axis LabelsRotation="-20" Labels="{Binding Labels}" DisableAnimations="True">
+                    <lvc:Axis.Separator>
+                        <lvc:Separator Step="1"></lvc:Separator>
+                    </lvc:Axis.Separator>
+                </lvc:Axis>
+            </lvc:CartesianChart.AxisX>
+            <lvc:CartesianChart.AxisY>
+                <lvc:Axis LabelFormatter="{Binding MillionFormatter}"></lvc:Axis>
+            </lvc:CartesianChart.AxisY>
+        </lvc:CartesianChart>
+    </Grid>
+</Page>

Others/Live-Charts-master/Examples/UWP/CartesianChart/Linq/LinqExample.xaml.cs

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+using LiveCharts;
+using LiveCharts.Configurations;
+using System;
+using System.Collections.ObjectModel;
+using System.Linq;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using LiveCharts.Helpers;
+
+// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238
+
+namespace UWP.CartesianChart.Linq
+{
+    /// <summary>
+    /// An empty page that can be used on its own or navigated to within a Frame.
+    /// </summary>
+    public sealed partial class LinqExample : Page
+    {
+        public LinqExample()
+        {
+            InitializeComponent();
+
+            //lets configure the chart to plot cities
+            Mapper = Mappers.Xy<City>()
+                .X((city, index) => index)
+                .Y(city => city.Population);
+
+            MillionFormatter = value => (value / 1000000).ToString("N") + "M";
+
+            this.Loading += LinqExample_Loading;
+
+            DataContext = this;
+        }
+
+        private async void LinqExample_Loading(FrameworkElement sender, Object args)
+        {
+            await DataBase.Initialize();
+
+            //lets take the first 15 records by default;
+            var records = DataBase.Cities.OrderByDescending(x => x.Population).Take(15).ToArray();
+
+            Results = records.AsChartValues();
+            Labels = new ObservableCollection<string>(records.Select(x => x.Name));
+        }
+
+        public ChartValues<City> Results { get; set; }
+        public ObservableCollection<string> Labels { get; set; }
+        public Func<double, string> MillionFormatter { get; set; }
+
+        public object Mapper { get; set; }
+
+        private void TextBoxBase_OnTextChanged(object sender, TextChangedEventArgs e)
+        {
+            var q = (Query.Text ?? string.Empty).ToUpper();
+
+            var records = DataBase.Cities
+                .Where(x => x.Name.ToUpper().Contains(q) || x.Country.ToUpper().Contains(q))
+                .OrderByDescending(x => x.Population)
+                .Take(15)
+                .ToArray();
+
+            Results.Clear();
+            Results.AddRange(records);
+
+            Labels.Clear();
+            foreach (var record in records) Labels.Add(record.Name);
+
+        }
+    }
+}