# GrapeCity.Wpf.SpreadSheet.CellType.Editors.GcDateTime.BlackoutDates

## Content

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<h1 id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_GcDateTime_BlackoutDates_" data-uid="GrapeCity.Wpf.SpreadSheet.CellType.Editors.GcDateTime.BlackoutDates*">BlackoutDates Property
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_GcDateTime_BlackoutDates_" data-uid="GrapeCity.Wpf.SpreadSheet.CellType.Editors.GcDateTime.BlackoutDates*"></a>
<h4 id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_GcDateTime_BlackoutDates" data-uid="GrapeCity.Wpf.SpreadSheet.CellType.Editors.GcDateTime.BlackoutDates">BlackoutDates</h4>
<div class="markdown level1 summary"><p>Gets a collection of dates that are marked as not selectable in the drop down calendar.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public BlackoutDatesCollection BlackoutDates { get; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public ReadOnly Property BlackoutDates As BlackoutDatesCollection</code></pre>
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<h5 class="propertyValue">Property Value</h5>
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      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="GrapeCity.Wpf.SpreadSheet.CellType.Editors.BlackoutDatesCollection.html">BlackoutDatesCollection</a></td>
      <td><p>A collection of dates that cannot be selected. The default value is an empty collection.</p>
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<h5 id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_GcDateTime_BlackoutDates_remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>
      Dates in this collection will appear gray and crossed out in the drop down calendar.
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<p>
      To make all past dates not selectable, you can use the GrapeCity.Windows.InputMan.BlackoutDatesCollection.AddDatesInPast method provided by the collection returned by this property.
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