# C1.Xamarin.Forms.Chart.ChartSeries.OnItemsSourcePropertyChanged

## Content

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<h1 id="C1_Xamarin_Forms_Chart_ChartSeries_OnItemsSourcePropertyChanged_" data-uid="C1.Xamarin.Forms.Chart.ChartSeries.OnItemsSourcePropertyChanged*">OnItemsSourcePropertyChanged Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Xamarin_Forms_Chart_ChartSeries_OnItemsSourcePropertyChanged_" data-uid="C1.Xamarin.Forms.Chart.ChartSeries.OnItemsSourcePropertyChanged*"></a>
<h4 id="C1_Xamarin_Forms_Chart_ChartSeries_OnItemsSourcePropertyChanged_System_Object_System_Object_" data-uid="C1.Xamarin.Forms.Chart.ChartSeries.OnItemsSourcePropertyChanged(System.Object,System.Object)">OnItemsSourcePropertyChanged(object, object)</h4>
<div class="markdown level1 summary"><p>Called on ItemsSource changed.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">protected void OnItemsSourcePropertyChanged(object oldSource, object newSource)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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  </thead>
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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><span class="parametername">oldSource</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><span class="parametername">newSource</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
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