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    <p>I can't find <code>StackedColumnSeries</code> in WPF so I will use Silverlight. As I see you create <code>SeriesDefinition</code> in code, in that case there is no point in binding, here is correct code:</p> <p>Xaml without chart series:</p> <pre><code>&lt;charting:Chart x:Name="MyChart" Padding="10,10,10,10" /&gt; </code></pre> <p>Code behind:</p> <pre><code>public class SimpleDataValue { public string IndependentValue { get; set; } public int DependentValue { get; set; } } public partial class MainPage : UserControl { private int[] myCollection = new int[10]; private List&lt;DefinitionSeries&gt; Series = new List&lt;DefinitionSeries&gt;(); public MainPage() { InitializeComponent(); this.drawChart(); this.Series.ForEach(this.MyChart.Series.Add); } private void drawChart() { this.Series.Clear(); this.Series = new List&lt;DefinitionSeries&gt;(); var dataValues = new List&lt;List&lt;SimpleDataValue&gt;&gt;(); int wartoscNiezalezna = 1; for (int i = 0; i &lt; 2; i++) { dataValues.Add(new List&lt;SimpleDataValue&gt;()); } foreach (var item in myCollection) { dataValues[0].Add(new SimpleDataValue { IndependentValue = "Czujnik " + wartoscNiezalezna, DependentValue = 100 }); //czerwone dataValues[1].Add(new SimpleDataValue { IndependentValue = "" + wartoscNiezalezna, DependentValue = 200 }); wartoscNiezalezna++; } var stackedSeries = Activator.CreateInstance(typeof(StackedColumnSeries)) as DefinitionSeries; int itemnr = 0; foreach (var item in dataValues) { var definicja = new SeriesDefinition(); if (itemnr == 0) definicja.Title = "Stan 1"; else definicja.Title = "Stan 2"; definicja.DependentValuePath = "DependentValue"; definicja.IndependentValuePath = "IndependentValue"; ToolTipService.SetToolTip(definicja, "asdas"); definicja.ItemsSource = item; stackedSeries.SeriesDefinitions.Add(definicja); itemnr++; } Series.Add(stackedSeries); } } </code></pre> <p>What about me, I would solve your problem in this way, because <code>ViewModel</code> mustn't contains anything form the View:</p> <p>Xaml</p> <pre><code>&lt;charting:Chart x:Name="MyChart" Padding="10,10,10,10"&gt; &lt;charting:Chart.Series&gt; &lt;charting:StackedColumnSeries&gt; &lt;charting:SeriesDefinition Title="Stan 1" ItemsSource="{Binding FirstCollection}" DependentValuePath="DependentValue" IndependentValuePath="IndependentValue" /&gt; &lt;charting:SeriesDefinition Title="Stan 2" ItemsSource="{Binding SecondCollection}" DependentValuePath="DependentValue" IndependentValuePath="IndependentValue" /&gt; &lt;/charting:StackedColumnSeries&gt; &lt;/charting:Chart.Series&gt; &lt;/charting:Chart&gt; </code></pre> <p>Code-behind</p> <pre><code>public class ChartModel { public List&lt;SimpleDataValue&gt; FirstCollection { get; set; } public List&lt;SimpleDataValue&gt; SecondCollection { get; set; } } public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); this.MyChart.DataContext = new ChartModel { FirstCollection = Enumerable.Range(1, 10).Select(i =&gt; new SimpleDataValue { IndependentValue = "Czujnik " + i, DependentValue = 100 }).ToList(), SecondCollection = Enumerable.Range(1, 10).Select(i =&gt; new SimpleDataValue { IndependentValue = "" + i, DependentValue = 200 }).ToList() }; } } </code></pre>
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    1. COThank you very, very much, it is good working now. THANKS !!:)
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    2. CO@jars Ok, and accept answer, it will give you a better reputation in future when you will ask other possible questions.
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