# C1.Blazor.Input.C1Popup.C1PopupReference.OnIsOpenChangedAsync

## Content

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<h1 id="C1_Blazor_Input_C1Popup_C1PopupReference_OnIsOpenChangedAsync_" data-uid="C1.Blazor.Input.C1Popup.C1PopupReference.OnIsOpenChangedAsync*">OnIsOpenChangedAsync Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Blazor_Input_C1Popup_C1PopupReference_OnIsOpenChangedAsync_" data-uid="C1.Blazor.Input.C1Popup.C1PopupReference.OnIsOpenChangedAsync*"></a>
<h4 id="C1_Blazor_Input_C1Popup_C1PopupReference_OnIsOpenChangedAsync_System_Boolean_" data-uid="C1.Blazor.Input.C1Popup.C1PopupReference.OnIsOpenChangedAsync(System.Boolean)">OnIsOpenChangedAsync(bool)</h4>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">[JSInvokable]
public Task OnIsOpenChangedAsync(bool isPopupOpen)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">&lt;JSInvokable&gt;
Public Function OnIsOpenChangedAsync(isPopupOpen As Boolean) As Task</code></pre>
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<h5 class="parameters">Parameters</h5>
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  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></td>
      <td><span class="parametername">isPopupOpen</span></td>
      <td></td>
    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.threading.tasks.task">Task</a></td>
      <td></td>
    </tr>
  </tbody>
</table>
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