# C1.WPF.TreeView.C1TreeViewItem.OnHeaderChanged

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<h1 id="C1_WPF_TreeView_C1TreeViewItem_OnHeaderChanged_" data-uid="C1.WPF.TreeView.C1TreeViewItem.OnHeaderChanged*">OnHeaderChanged Method
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<a id="C1_WPF_TreeView_C1TreeViewItem_OnHeaderChanged_" data-uid="C1.WPF.TreeView.C1TreeViewItem.OnHeaderChanged*"></a>
<h4 id="C1_WPF_TreeView_C1TreeViewItem_OnHeaderChanged" data-uid="C1.WPF.TreeView.C1TreeViewItem.OnHeaderChanged">OnHeaderChanged()</h4>
<div class="markdown level1 summary"><p>Called when the value of the <span class="xref">Header</span> property changes.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">protected override void OnHeaderChanged()</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overrides Sub OnHeaderChanged()</code></pre>
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