# C1.Win.Schedule.C1Schedule.BeforeAppointmentShow

## Content

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<h1 id="C1_Win_Schedule_C1Schedule_BeforeAppointmentShow" data-uid="C1.Win.Schedule.C1Schedule.BeforeAppointmentShow" class="text-break">BeforeAppointmentShow Event
</h1>
<div class="markdown level0 summary"><p>Occurs immediately before the Appointment dialog box is displayed.</p>
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<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.Schedule.html">C1.Win.Schedule</a></h6>
<h6><strong>Assembly</strong>: C1.Win.Schedule.10.dll</h6>
<h5 id="C1_Win_Schedule_C1Schedule_BeforeAppointmentShow_syntax">Syntax</h5>
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  <pre><code class="lang-csharp hljs">[C1Description(&quot;BeforeAppointmentShow&quot;, &quot;Fired before the Appointment dialog box is displayed.&quot;)]
[C1Category(&quot;UI&quot;)]
public event CancelAppointmentEventHandler BeforeAppointmentShow</code></pre>
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  <pre><code class="lang-vbnet hljs">&lt;C1Description(&quot;BeforeAppointmentShow&quot;, &quot;Fired before the Appointment dialog box is displayed.&quot;)&gt;
&lt;C1Category(&quot;UI&quot;)&gt;
Public Event BeforeAppointmentShow As CancelAppointmentEventHandler</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><span class="xref">CancelAppointmentEventHandler</span></td>
      <td>Occurs immediately before the Appointment dialog box is displayed.</td>
    </tr>
  </tbody>
</table>
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