# C1.Win.C1ChartBase.baseChart.Invalidate

## Content

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<h1 id="C1_Win_C1ChartBase_baseChart_Invalidate_" data-uid="C1.Win.C1ChartBase.baseChart.Invalidate*">Invalidate Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_C1ChartBase_baseChart_Invalidate_" data-uid="C1.Win.C1ChartBase.baseChart.Invalidate*"></a>
<h4 id="C1_Win_C1ChartBase_baseChart_Invalidate" data-uid="C1.Win.C1ChartBase.baseChart.Invalidate">Invalidate()</h4>
<div class="markdown level1 summary"><p>Invalidates the entire surface of the control and causes the control to be redrawn.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void Invalidate()</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub Invalidate()</code></pre>
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<h5 class="implements">Implements</h5>
    <div><a class="xref" href="C1.Win.C1ChartBase.iChartRect.Invalidate.html#C1_Win_C1ChartBase_iChartRect_Invalidate">iChartRect.Invalidate()</a></div>


<a id="C1_Win_C1ChartBase_baseChart_Invalidate_" data-uid="C1.Win.C1ChartBase.baseChart.Invalidate*"></a>
<h4 id="C1_Win_C1ChartBase_baseChart_Invalidate_System_Drawing_Rectangle_" data-uid="C1.Win.C1ChartBase.baseChart.Invalidate(System.Drawing.Rectangle)">Invalidate(Rectangle)</h4>
<div class="markdown level1 summary"><p>Invalidates the specified region of the control (adds it to the control's update
region, which is the area that will be repainted at the next paint operation),
and causes a paint message to be sent to the control.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void Invalidate(Rectangle r)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub Invalidate(r As Rectangle)</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="https://learn.microsoft.com/dotnet/api/system.drawing.rectangle">Rectangle</a></td>
      <td><span class="parametername">r</span></td>
      <td><p>A rectangle that represents the region to invalidate.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="implements">Implements</h5>
    <div><a class="xref" href="C1.Win.C1ChartBase.iChartRect.Invalidate.html#C1_Win_C1ChartBase_iChartRect_Invalidate_System_Drawing_Rectangle_">iChartRect.Invalidate(Rectangle)</a></div>
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