# GrapeCity.Documents.Excel.PivotFieldDateGroupOptions.GroupBy

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<h1 id="GrapeCity_Documents_Excel_PivotFieldDateGroupOptions_GroupBy_" data-uid="GrapeCity.Documents.Excel.PivotFieldDateGroupOptions.GroupBy*">GroupBy Property
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<h4 id="GrapeCity_Documents_Excel_PivotFieldDateGroupOptions_GroupBy" data-uid="GrapeCity.Documents.Excel.PivotFieldDateGroupOptions.GroupBy">GroupBy</h4>
<div class="markdown level1 summary"><p>Gets or sets the date and time units used to create the grouped PivotField.</p>
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When multiple units are used, grouping is applied in the standard order
from seconds through years.
At least one unit is required when grouping is applied.
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public PivotFieldDateGroupBy GroupBy { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property GroupBy As PivotFieldDateGroupBy</code></pre>
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<h5 id="GrapeCity_Documents_Excel_PivotFieldDateGroupOptions_GroupBy_examples">Examples</h5>
<pre><code class="lang-csharp">PivotFieldDateGroupOptions options = new PivotFieldDateGroupOptions();
options.GroupBy = PivotFieldDateGroupBy.Months | PivotFieldDateGroupBy.Years;
PivotFieldDateGroupBy groupBy = options.GroupBy;</code></pre>

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