# C1.Win.Accordion.C1Accordion.AllowCollapseAll

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<h1 id="C1_Win_Accordion_C1Accordion_AllowCollapseAll_" data-uid="C1.Win.Accordion.C1Accordion.AllowCollapseAll*">AllowCollapseAll Property
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<a id="C1_Win_Accordion_C1Accordion_AllowCollapseAll_" data-uid="C1.Win.Accordion.C1Accordion.AllowCollapseAll*"></a>
<h4 id="C1_Win_Accordion_C1Accordion_AllowCollapseAll" data-uid="C1.Win.Accordion.C1Accordion.AllowCollapseAll">AllowCollapseAll</h4>
<div class="markdown level1 summary"><p>Gets or sets a value that determines whether users should be allowed to collapse all the items.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public bool AllowCollapseAll { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property AllowCollapseAll As Boolean</code></pre>
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<h5 id="C1_Win_Accordion_C1Accordion_AllowCollapseAll_remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>The default value is false, which ensures at least one page is always expanded.</p>
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