# C1.Win.TreeView.C1TreeView.ExpandButtonBehavior

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<h1 id="C1_Win_TreeView_C1TreeView_ExpandButtonBehavior_" data-uid="C1.Win.TreeView.C1TreeView.ExpandButtonBehavior*">ExpandButtonBehavior Property
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<a id="C1_Win_TreeView_C1TreeView_ExpandButtonBehavior_" data-uid="C1.Win.TreeView.C1TreeView.ExpandButtonBehavior*"></a>
<h4 id="C1_Win_TreeView_C1TreeView_ExpandButtonBehavior" data-uid="C1.Win.TreeView.C1TreeView.ExpandButtonBehavior">ExpandButtonBehavior</h4>
<div class="markdown level1 summary"><p>Gets or sets a value that specifies the behavior of the <a class="xref" href="C1.Win.TreeView.C1TreeView.html">C1TreeView</a> when the expand button is clicked.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public ExpandButtonBehavior ExpandButtonBehavior { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property ExpandButtonBehavior As ExpandButtonBehavior</code></pre>
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<h5 id="C1_Win_TreeView_C1TreeView_ExpandButtonBehavior_remarks">Remarks</h5>
<div class="markdown level1 remarks"><ul><li><span class="term">MouseUp</span>The C1TreeView collapses and expands a node on the MouseUp event.</li><li><span class="term">MouseDown</span>The C1TreeView collapses and expands a node on the MouseDown event.</li></ul> 
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If you want to use MS TreeView like behavior, then set the value to MouseDown.
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