# C1.Data.DataSource.ClientCollectionView.CurrentChanging

## Content

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<h1 id="C1_Data_DataSource_ClientCollectionView_CurrentChanging" data-uid="C1.Data.DataSource.ClientCollectionView.CurrentChanging" class="text-break">CurrentChanging Event
</h1>
<div class="markdown level0 summary"><p>When implementing this interface, raise this event before changing the current item. Event handler can cancel this event.</p>
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<div class="markdown level0 conceptual"></div>
<div class="implements">
  <h5>Implements</h5>
  <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.icollectionview.currentchanging">CurrentChanging</a></div>
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<h6><strong>Namespace</strong>: <a class="xref" href="C1.Data.DataSource.html">C1.Data.DataSource</a></h6>
<h6><strong>Assembly</strong>: C1.Data.Entity.4.8.dll</h6>
<h5 id="C1_Data_DataSource_ClientCollectionView_CurrentChanging_syntax">Syntax</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public event CurrentChangingEventHandler CurrentChanging</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Event CurrentChanging As CurrentChangingEventHandler</code></pre>
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<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.currentchangingeventhandler">CurrentChangingEventHandler</a></td>
      <td>When implementing this interface, raise this event before changing the current item. Event handler can cancel this event.</td>
    </tr>
  </tbody>
</table>
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