# C1.WPF.Excel.XLDataValidationRangeCollection.ToughRecalc

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<h1 id="C1_WPF_Excel_XLDataValidationRangeCollection_ToughRecalc_" data-uid="C1.WPF.Excel.XLDataValidationRangeCollection.ToughRecalc*">ToughRecalc Property
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<h4 id="C1_WPF_Excel_XLDataValidationRangeCollection_ToughRecalc" data-uid="C1.WPF.Excel.XLDataValidationRangeCollection.ToughRecalc">ToughRecalc</h4>
<div class="markdown level1 summary"><p>Determines whether the appearance of the cell reauires significant procrssing.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public bool ToughRecalc { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property ToughRecalc As Boolean</code></pre>
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