# C1.CalcEngine.ExpressionEngine.Expression.-ctor

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="C1_CalcEngine_ExpressionEngine_Expression__ctor_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor*">Expression Constructor
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_CalcEngine_ExpressionEngine_Expression__ctor_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor*"></a>
<h4 id="C1_CalcEngine_ExpressionEngine_Expression__ctor_C1_CalcEngine_ExpressionEngine_IExpressionEngine_C1_CalcEngine_ExpressionEngine_Token_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor(C1.CalcEngine.ExpressionEngine.IExpressionEngine,C1.CalcEngine.ExpressionEngine.Token)">Expression(IExpressionEngine, Token)</h4>
<div class="markdown level1 summary"><p>Initializes a new instance of the <a class="xref" href="C1.CalcEngine.ExpressionEngine.Expression.html">Expression</a> class.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public Expression(IExpressionEngine engine, Token token)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub New(engine As IExpressionEngine, token As Token)</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>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.CalcEngine.ExpressionEngine.IExpressionEngine.html">IExpressionEngine</a></td>
      <td><span class="parametername">engine</span></td>
      <td><p>the engine that initializes this expression.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="C1.CalcEngine.ExpressionEngine.Token.html">Token</a></td>
      <td><span class="parametername">token</span></td>
      <td><p>the expression tree node.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="C1_CalcEngine_ExpressionEngine_Expression__ctor_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor*"></a>
<h4 id="C1_CalcEngine_ExpressionEngine_Expression__ctor_C1_CalcEngine_ExpressionEngine_IExpressionEngine_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor(C1.CalcEngine.ExpressionEngine.IExpressionEngine)">Expression(IExpressionEngine)</h4>
<div class="markdown level1 summary"><p>Initializes a new instance of the <a class="xref" href="C1.CalcEngine.ExpressionEngine.Expression.html">Expression</a> class.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public Expression(IExpressionEngine engine)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub New(engine As IExpressionEngine)</code></pre>
</div>
<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>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.CalcEngine.ExpressionEngine.IExpressionEngine.html">IExpressionEngine</a></td>
      <td><span class="parametername">engine</span></td>
      <td><p>the engine that initializes this expression.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="C1_CalcEngine_ExpressionEngine_Expression__ctor_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor*"></a>
<h4 id="C1_CalcEngine_ExpressionEngine_Expression__ctor_C1_CalcEngine_ExpressionEngine_IExpressionEngine_System_Object_" data-uid="C1.CalcEngine.ExpressionEngine.Expression.#ctor(C1.CalcEngine.ExpressionEngine.IExpressionEngine,System.Object)">Expression(IExpressionEngine, object)</h4>
<div class="markdown level1 summary"><p>Initializes a new instance of the <a class="xref" href="C1.CalcEngine.ExpressionEngine.Expression.html">Expression</a> class.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public Expression(IExpressionEngine engine, object value)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub New(engine As IExpressionEngine, value As Object)</code></pre>
</div>
<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>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.CalcEngine.ExpressionEngine.IExpressionEngine.html">IExpressionEngine</a></td>
      <td><span class="parametername">engine</span></td>
      <td><p>the engine that initializes this expression.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><span class="parametername">value</span></td>
      <td><p>the vale of expression tree node</p>
</td>
    </tr>
  </tbody>
</table>
</div>