# GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.op_LogicalNot

## Content

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<h1 id="GrapeCity_Enterprise_Data_Expressions_Evaluation_Variant_op_LogicalNot_" data-uid="GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.op_LogicalNot*">operator ! Operator
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<a id="GrapeCity_Enterprise_Data_Expressions_Evaluation_Variant_op_LogicalNot_" data-uid="GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.op_LogicalNot*"></a>
<h4 id="GrapeCity_Enterprise_Data_Expressions_Evaluation_Variant_op_LogicalNot_GrapeCity_Enterprise_Data_Expressions_Evaluation_Variant_" data-uid="GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.op_LogicalNot(GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant)">operator !(Variant)</h4>
<div class="markdown level1 summary"><p>Performs a logical negation on a <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.html">Variant</a> value if it is of boolean type, or a bitwise negation if it is of a numeric type.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public static Variant operator !(Variant v)</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.html">Variant</a></td>
      <td><span class="parametername">v</span></td>
      <td><p>Variant to be inverted.</p>
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<h5 class="returns">Returns</h5>
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      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.html">Variant</a></td>
      <td><p><code>Variant.True</code> if the given variant is False, False otherwise for boolean variant type .
Bitwise 'not' for numeric variants (int, long, ulong, float, double, decimal) and for string which can be parsed as numeric.
Returns 'Error' if the given variant is of a non-numeric, non-boolean type that does not support negation, such as TimeSpan, Date, or Object.</p>
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