# C1.CalcEngine.ISupportCustomFunctions

## Content

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  <h1 id="C1_CalcEngine_ISupportCustomFunctions" data-uid="C1.CalcEngine.ISupportCustomFunctions" class="text-break">ISupportCustomFunctions Interface
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  <div class="markdown level0 summary"><p>Defines methods for supporting custom functions.</p>
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  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.CalcEngine.html">C1.CalcEngine</a></h6>
  <h6><strong>Assembly</strong>: C1.CalcEngine.dll</h6>
  <h5 id="C1_CalcEngine_ISupportCustomFunctions_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public interface ISupportCustomFunctions</code></pre>
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  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Interface ISupportCustomFunctions</code></pre>
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  <h3 id="methods">Methods
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  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
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      <tr>
        <td id="C1_CalcEngine_ISupportCustomFunctions_AddFunction_System_Collections_Generic_List_C1_CalcEngine_ExpressionItem__System_Func_System_Collections_Generic_List_System_Object__System_Object__System_Int32_System_Int32_" data-uid="C1.CalcEngine.ISupportCustomFunctions.AddFunction(System.Collections.Generic.List{C1.CalcEngine.ExpressionItem},System.Func{System.Collections.Generic.List{System.Object},System.Object},System.Int32,System.Int32)">
          <a class="xref" href="C1.CalcEngine.ISupportCustomFunctions.AddFunction.html#C1_CalcEngine_ISupportCustomFunctions_AddFunction_System_Collections_Generic_List_C1_CalcEngine_ExpressionItem__System_Func_System_Collections_Generic_List_System_Object__System_Object__System_Int32_System_Int32_">AddFunction(List&lt;ExpressionItem&gt;, Func&lt;List&lt;object&gt;, object&gt;, int, int)</a>
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        <td class="markdown level1 summary"><p>Adds a custom function.</p>
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      </tr>
    </tbody>
  </table>

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