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POHow do I bind my LINQ query results (put into a dictionary) to a Chart in WPF?
 

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  1. POHow do I bind my LINQ query results (put into a dictionary) to a Chart in WPF?
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    <p>Ok so I am just practicing what is probably some very basic stuff with charts in wpf. I am fairly new to linq and wpf, so I apologize in advance if this is a silly question. I've got my LINQ to entity query returning all columns, I want to select two of the columns (Month (string), Points(int)) throw them into a dictionary, and then binding that to my chart..</p> <p>Here is my XAML::</p> <pre><code>&lt;Window x:Class="Chart.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:DV="clr-namespace:System.Windows.Controls.DataVisualization;assembly=System.Windows.Controls.DataVisualization.Toolkit" xmlns:DVC="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit" Title="MainWindow" Height="350" Width="525"&gt; &lt;Grid&gt; &lt;DVC:Chart Name="testchart" Title="Statistics" Width="500" Height="300" LegendTitle="Stats"&gt; &lt;DVC:Chart.Series&gt; &lt;DVC:BarSeries Title="Points" IndependentValueBinding="" DependentValueBinding=""&gt; &lt;/DVC:BarSeries&gt; &lt;/DVC:Chart.Series&gt; &lt;/DVC:Chart&gt; &lt;/Grid&gt; </code></pre> <p></p> <p>And here is the code behind:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; 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 System.Windows.Controls.DataVisualization.Charting; namespace Chart { public partial class MainWindow : Window { Dictionary&lt;string, int&gt; _data = new Dictionary&lt;string, int&gt;(); public MainWindow() { InitializeComponent(); using (CE ctx = new CE()) { var query = (from r in ctx.ChartOnes select r).ToDictionary(k =&gt; k.Month); } } } } </code></pre> <p>Thanks Dessus for your timely response! I will play around with your suggestions today. I did get some help from a co-worker yesterday and he was able to show me how to get it to work. Here is the edited code snippets:</p> <pre><code> &lt;DVC:Chart Name="testchart" Title="Statistics" Width="500" Height="300" LegendTitle="Stats"&gt; &lt;DVC:Chart.Series&gt; &lt;DVC:ColumnSeries Title="Points" IndependentValueBinding="{Binding Path=Key}" DependentValueBinding="{Binding Path=Value.Points}"&gt; &lt;/DVC:ColumnSeries&gt; &lt;/DVC:Chart.Series&gt; &lt;/DVC:Chart&gt; </code></pre> <p>and the code-behind:</p> <pre><code> private void LoadBarChartData() { CE ctx = new CE(); var query = (from r in ctx.ChartOnes select new { Points = r.Points, Month = r.Month }).ToDictionary(k =&gt; k.Month); ((ColumnSeries)testchart.Series[0]).ItemsSource = query; } </code></pre>
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