# C1.Win.FlexGrid.C1FlexGridBase.BeforeGroupUpdate

## Content

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




<h1 id="C1_Win_FlexGrid_C1FlexGridBase_BeforeGroupUpdate" data-uid="C1.Win.FlexGrid.C1FlexGridBase.BeforeGroupUpdate" class="text-break">BeforeGroupUpdate Event
</h1>
<div class="markdown level0 summary"><p>Occurs before the grid is grouped based on the value of the <a class="xref" href="C1.Win.FlexGrid.C1FlexGridBase.GroupDescriptions.html#C1_Win_FlexGrid_C1FlexGridBase_GroupDescriptions">GroupDescriptions</a> property.</p>
</div>
<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.FlexGrid.html">C1.Win.FlexGrid</a></h6>
<h6><strong>Assembly</strong>: C1.Win.FlexGrid.10.dll</h6>
<h5 id="C1_Win_FlexGrid_C1FlexGridBase_BeforeGroupUpdate_syntax">Syntax</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public event CancelEventHandler BeforeGroupUpdate</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Event BeforeGroupUpdate As CancelEventHandler</code></pre>
</div>
<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.componentmodel.canceleventhandler">CancelEventHandler</a></td>
      <td>Occurs before the grid is grouped based on the value of the  property.</td>
    </tr>
  </tbody>
</table>
</div>