# GrapeCity.Win.Spread.InputMan.CellType.GcNumberEditingControl.OnPopUpOpening

## Content

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<h1 id="GrapeCity_Win_Spread_InputMan_CellType_GcNumberEditingControl_OnPopUpOpening_" data-uid="GrapeCity.Win.Spread.InputMan.CellType.GcNumberEditingControl.OnPopUpOpening*">OnPopUpOpening Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="GrapeCity_Win_Spread_InputMan_CellType_GcNumberEditingControl_OnPopUpOpening_" data-uid="GrapeCity.Win.Spread.InputMan.CellType.GcNumberEditingControl.OnPopUpOpening*"></a>
<h4 id="GrapeCity_Win_Spread_InputMan_CellType_GcNumberEditingControl_OnPopUpOpening_GrapeCity_Win_Spread_InputMan_CellType_PopUpOpeningEventArgs_" data-uid="GrapeCity.Win.Spread.InputMan.CellType.GcNumberEditingControl.OnPopUpOpening(GrapeCity.Win.Spread.InputMan.CellType.PopUpOpeningEventArgs)">OnPopUpOpening(PopUpOpeningEventArgs)</h4>
<div class="markdown level1 summary"><p>Raises the <span class="xref">GrapeCity.Win.Spread.InputMan.CellType.GcNumber.PopUpOpening</span> event.</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 OnPopUpOpening(PopUpOpeningEventArgs e)</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overrides Sub OnPopUpOpening(e As PopUpOpeningEventArgs)</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>
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    <tr>
      <td><a class="xref" href="GrapeCity.Win.Spread.InputMan.CellType.PopUpOpeningEventArgs.html">PopUpOpeningEventArgs</a></td>
      <td><span class="parametername">e</span></td>
      <td><p>A <a class="xref" href="GrapeCity.Win.Spread.InputMan.CellType.PopUpOpeningEventArgs.html">PopUpOpeningEventArgs</a> instance that contains the event data.</p>
</td>
    </tr>
  </tbody>
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<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="GrapeCity.Win.Spread.InputMan.CellType.PopUpOpeningEventArgs.html">GcNumber.OnPopUpOpening(PopUpOpeningEventArgs)</a></div>
<h5 id="GrapeCity_Win_Spread_InputMan_CellType_GcNumberEditingControl_OnPopUpOpening_GrapeCity_Win_Spread_InputMan_CellType_PopUpOpeningEventArgs__remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>Raising an event invokes the event handler through a delegate.</p>
<p></p>
  The <b>OnPopUpOpening</b> method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
<p></p><b>Notes to Inheritors:</b><p></p>
  When overriding <b>OnPopUpOpening</b> in a derived class, be sure to call the base class's <b>OnPopUpOpening</b> method so that registered delegates receive the event.
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