# C1.WPF.Binding.C1CalcEngine.Evaluate

## Content

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<h1 id="C1_WPF_Binding_C1CalcEngine_Evaluate_" data-uid="C1.WPF.Binding.C1CalcEngine.Evaluate*">Evaluate Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_WPF_Binding_C1CalcEngine_Evaluate_" data-uid="C1.WPF.Binding.C1CalcEngine.Evaluate*"></a>
<h4 id="C1_WPF_Binding_C1CalcEngine_Evaluate_System_String_" data-uid="C1.WPF.Binding.C1CalcEngine.Evaluate(System.String)">Evaluate(string)</h4>
<div class="markdown level1 summary"><p>Evaluates a string.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public object Evaluate(string expression)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Function Evaluate(expression As String) As Object</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">expression</span></td>
      <td><p>Expression to evaluate.</p>
</td>
    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><p>The value of the expression.</p>
</td>
    </tr>
  </tbody>
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<h5 id="C1_WPF_Binding_C1CalcEngine_Evaluate_System_String__remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>If you are going to evaluate the same expression several times,
it is more efficient to parse it only once using the <a class="xref" href="C1.WPF.Binding.C1CalcEngine.Parse.html#C1_WPF_Binding_C1CalcEngine_Parse_System_String_">Parse(string)</a>
method and then using the Expression.Evaluate method to evaluate
the parsed expression.</p>
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