# C1.WPF.C1Chart.Extended.ParametricFunctionSeries.XFunction

## Content

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<h1 id="C1_WPF_C1Chart_Extended_ParametricFunctionSeries_XFunction_" data-uid="C1.WPF.C1Chart.Extended.ParametricFunctionSeries.XFunction*">XFunction Property
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<a id="C1_WPF_C1Chart_Extended_ParametricFunctionSeries_XFunction_" data-uid="C1.WPF.C1Chart.Extended.ParametricFunctionSeries.XFunction*"></a>
<h4 id="C1_WPF_C1Chart_Extended_ParametricFunctionSeries_XFunction" data-uid="C1.WPF.C1Chart.Extended.ParametricFunctionSeries.XFunction">XFunction</h4>
<div class="markdown level1 summary"><p>Gets or sets the function calculating x-value of data point.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public Func&lt;double, double&gt; XFunction { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property XFunction As Func(Of Double, Double)</code></pre>
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