# C1.WPF.Input.C1ComboBox.OnItemsSourceChangedProtected

## Content

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<h1 id="C1_WPF_Input_C1ComboBox_OnItemsSourceChangedProtected_" data-uid="C1.WPF.Input.C1ComboBox.OnItemsSourceChangedProtected*">OnItemsSourceChangedProtected Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_WPF_Input_C1ComboBox_OnItemsSourceChangedProtected_" data-uid="C1.WPF.Input.C1ComboBox.OnItemsSourceChangedProtected*"></a>
<h4 id="C1_WPF_Input_C1ComboBox_OnItemsSourceChangedProtected_System_Collections_IEnumerable_System_Collections_IEnumerable_" data-uid="C1.WPF.Input.C1ComboBox.OnItemsSourceChangedProtected(System.Collections.IEnumerable,System.Collections.IEnumerable)">OnItemsSourceChangedProtected(IEnumerable, IEnumerable)</h4>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">protected override void OnItemsSourceChangedProtected(IEnumerable oldValue, IEnumerable newValue)</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overrides Sub OnItemsSourceChangedProtected(oldValue As IEnumerable, newValue As IEnumerable)</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ienumerable">IEnumerable</a></td>
      <td><span class="parametername">oldValue</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ienumerable">IEnumerable</a></td>
      <td><span class="parametername">newValue</span></td>
      <td></td>
    </tr>
  </tbody>
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