# C1.Win.Accordion.C1Accordion.CollapseAll

## Content

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<h1 id="C1_Win_Accordion_C1Accordion_CollapseAll_" data-uid="C1.Win.Accordion.C1Accordion.CollapseAll*">CollapseAll Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_Accordion_C1Accordion_CollapseAll_" data-uid="C1.Win.Accordion.C1Accordion.CollapseAll*"></a>
<h4 id="C1_Win_Accordion_C1Accordion_CollapseAll_System_Int32_" data-uid="C1.Win.Accordion.C1Accordion.CollapseAll(System.Int32)">CollapseAll(int)</h4>
<div class="markdown level1 summary"><p>Collapses all Accordion pages (instead one if collapsing all pages is not allowed).</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public void CollapseAll(int stayExpanded = 0)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Sub CollapseAll(Optional stayExpanded As Integer = 0)</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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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td><span class="parametername">stayExpanded</span></td>
      <td><p>An index <a class="xref" href="C1.Win.Accordion.C1Accordion.Pages.html#C1_Win_Accordion_C1Accordion_Pages">Pages</a> item to stay expanded when <a class="xref" href="C1.Win.Accordion.C1Accordion.AllowCollapseAll.html#C1_Win_Accordion_C1Accordion_AllowCollapseAll">AllowCollapseAll</a> is false. Default is 0.</p>
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