# C1.WPF.Extended.PropertyGrid.CollectionEditor.OnOpenButtonClick

## Content

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<h1 id="C1_WPF_Extended_PropertyGrid_CollectionEditor_OnOpenButtonClick_" data-uid="C1.WPF.Extended.PropertyGrid.CollectionEditor.OnOpenButtonClick*">OnOpenButtonClick Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_WPF_Extended_PropertyGrid_CollectionEditor_OnOpenButtonClick_" data-uid="C1.WPF.Extended.PropertyGrid.CollectionEditor.OnOpenButtonClick*"></a>
<h4 id="C1_WPF_Extended_PropertyGrid_CollectionEditor_OnOpenButtonClick_System_Object_System_Windows_RoutedEventArgs_" data-uid="C1.WPF.Extended.PropertyGrid.CollectionEditor.OnOpenButtonClick(System.Object,System.Windows.RoutedEventArgs)">OnOpenButtonClick(object, RoutedEventArgs)</h4>
<div class="markdown level1 summary"><p>Called when open button is clicked.</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 void OnOpenButtonClick(object sender, RoutedEventArgs e)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Protected Overrides Sub OnOpenButtonClick(sender As Object, 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.object">object</a></td>
      <td><span class="parametername">sender</span></td>
      <td><p>The sender.</p>
</td>
    </tr>
    <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><p>The <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.routedeventargs">RoutedEventArgs</a> instance containing the event data.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="C1.WPF.Extended.PropertyGrid.AdvancedEditor.OnOpenButtonClick.html#C1_WPF_Extended_PropertyGrid_AdvancedEditor_OnOpenButtonClick_System_Object_System_Windows_RoutedEventArgs_">AdvancedEditor.OnOpenButtonClick(object, RoutedEventArgs)</a></div>
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