# C1.WPF.FlexGrid.C1FlexComboBox.OnLostFocus

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="C1_WPF_FlexGrid_C1FlexComboBox_OnLostFocus_" data-uid="C1.WPF.FlexGrid.C1FlexComboBox.OnLostFocus*">OnLostFocus Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_WPF_FlexGrid_C1FlexComboBox_OnLostFocus_" data-uid="C1.WPF.FlexGrid.C1FlexComboBox.OnLostFocus*"></a>
<h4 id="C1_WPF_FlexGrid_C1FlexComboBox_OnLostFocus_System_Windows_RoutedEventArgs_" data-uid="C1.WPF.FlexGrid.C1FlexComboBox.OnLostFocus(System.Windows.RoutedEventArgs)">OnLostFocus(RoutedEventArgs)</h4>
<div class="markdown level1 summary"><p>Overridden to close the drop-down when losing focus.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">protected override void OnLostFocus(RoutedEventArgs e)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Protected Overrides Sub OnLostFocus(e As RoutedEventArgs)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <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.windows.routedeventargs">RoutedEventArgs</a></td>
      <td><span class="parametername">e</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.controls.primitives.textboxbase.onlostfocus">TextBoxBase.OnLostFocus(RoutedEventArgs)</a></div>
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