# GrapeCity.ActiveReports.Design.Designer.ActiveTabChanged

## Content

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<h1 id="GrapeCity_ActiveReports_Design_Designer_ActiveTabChanged" data-uid="GrapeCity.ActiveReports.Design.Designer.ActiveTabChanged" class="text-break">ActiveTabChanged Event
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<div class="markdown level0 summary"><p>Occurs when the currently <a class="xref" href="GrapeCity.ActiveReports.Design.Designer.ActiveTab.html#GrapeCity_ActiveReports_Design_Designer_ActiveTab">ActiveTab</a> in the designer interface changes.</p>
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<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="GrapeCity.ActiveReports.Design.html">GrapeCity.ActiveReports.Design</a></h6>
<h6><strong>Assembly</strong>: MESCIUS.ActiveReports.Design.Win.dll</h6>
<h5 id="GrapeCity_ActiveReports_Design_Designer_ActiveTabChanged_syntax">Syntax</h5>
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  <pre><code class="lang-csharp hljs">[Browsable(false)]
public event EventHandler ActiveTabChanged</code></pre>
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<h5 class="returns">Returns</h5>
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  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.eventhandler">EventHandler</a></td>
      <td>Occurs when the currently  in the designer interface changes.</td>
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  </tbody>
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<h5 id="GrapeCity_ActiveReports_Design_Designer_ActiveTabChanged_remarks"><strong>Remarks</strong></h5>
<div class="markdown level0 remarks"><p>This event is triggered whenever the active tab within the designer's interface is switched, allowing for custom logic to be executed in response to this change. The <a class="xref" href="GrapeCity.ActiveReports.Design.Designer.ActiveTab.html#GrapeCity_ActiveReports_Design_Designer_ActiveTab">ActiveTab</a> property can be used within the event handler to determine the newly activated tab.</p>
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