# C1.WPF.C1ComboBox.IsOpenKey

## Content

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<h1 id="C1_WPF_C1ComboBox_IsOpenKey_" data-uid="C1.WPF.C1ComboBox.IsOpenKey*">IsOpenKey Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_WPF_C1ComboBox_IsOpenKey_" data-uid="C1.WPF.C1ComboBox.IsOpenKey*"></a>
<h4 id="C1_WPF_C1ComboBox_IsOpenKey_System_Windows_Input_Key_" data-uid="C1.WPF.C1ComboBox.IsOpenKey(System.Windows.Input.Key)">IsOpenKey(Key)</h4>
<div class="markdown level1 summary"><p>Return true if that key should open the combo box.
Override to handle you own keyboard selection strategy.</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 virtual bool IsOpenKey(Key key)</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overridable Function IsOpenKey(key As Key) As Boolean</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.input.key">Key</a></td>
      <td><span class="parametername">key</span></td>
      <td><p>The key that was pressed.</p>
</td>
    </tr>
  </tbody>
</table>
<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.boolean">bool</a></td>
      <td><p>True if the key pressed should open the combo box.</p>
</td>
    </tr>
  </tbody>
</table>
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