# GrapeCity.Documents.Excel.CalcReference.IsExternalReference

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<h1 id="GrapeCity_Documents_Excel_CalcReference_IsExternalReference_" data-uid="GrapeCity.Documents.Excel.CalcReference.IsExternalReference*">IsExternalReference Property
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<a id="GrapeCity_Documents_Excel_CalcReference_IsExternalReference_" data-uid="GrapeCity.Documents.Excel.CalcReference.IsExternalReference*"></a>
<h4 id="GrapeCity_Documents_Excel_CalcReference_IsExternalReference" data-uid="GrapeCity.Documents.Excel.CalcReference.IsExternalReference">IsExternalReference</h4>
<div class="markdown level1 summary"><p>If the reference is in other workbook.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public bool IsExternalReference { get; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public ReadOnly Property IsExternalReference As Boolean</code></pre>
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