# C1.Blazor.Input.C1AutoComplete-1.OnIsDropDownOpenChanged

## Content

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<h1 id="C1_Blazor_Input_C1AutoComplete_1_OnIsDropDownOpenChanged_" data-uid="C1.Blazor.Input.C1AutoComplete`1.OnIsDropDownOpenChanged*">OnIsDropDownOpenChanged Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_Blazor_Input_C1AutoComplete_1_OnIsDropDownOpenChanged_" data-uid="C1.Blazor.Input.C1AutoComplete`1.OnIsDropDownOpenChanged*"></a>
<h4 id="C1_Blazor_Input_C1AutoComplete_1_OnIsDropDownOpenChanged" data-uid="C1.Blazor.Input.C1AutoComplete`1.OnIsDropDownOpenChanged">OnIsDropDownOpenChanged()</h4>
<div class="markdown level1 summary"><p>Called when <a class="xref" href="C1.Blazor.Input.C1DropDown.IsDropDownOpen.html#C1_Blazor_Input_C1DropDown_IsDropDownOpen">IsDropDownOpen</a> changed.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">protected override Task OnIsDropDownOpenChanged()</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overrides Function OnIsDropDownOpenChanged() As Task</code></pre>
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<h5 class="returns">Returns</h5>
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      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.threading.tasks.task">Task</a></td>
      <td></td>
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<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="C1.Blazor.Input.C1ComboBox-1.OnIsDropDownOpenChanged.html#C1_Blazor_Input_C1ComboBox_1_OnIsDropDownOpenChanged">C1ComboBox&lt;T&gt;.OnIsDropDownOpenChanged()</a></div>
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