# C1.Framework.Drawing.Gdi.Region.Union

## Content

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



<h1 id="C1_Framework_Drawing_Gdi_Region_Union_" data-uid="C1.Framework.Drawing.Gdi.Region.Union*">Union Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Framework_Drawing_Gdi_Region_Union_" data-uid="C1.Framework.Drawing.Gdi.Region.Union*"></a>
<h4 id="C1_Framework_Drawing_Gdi_Region_Union_System_Drawing_Rectangle_" data-uid="C1.Framework.Drawing.Gdi.Region.Union(System.Drawing.Rectangle)">Union(Rectangle)</h4>
<div class="markdown level1 summary"><p>Updates this <a class="xref" href="C1.Framework.Drawing.Gdi.Region.html">Region</a> object to the union of itself and the
specified <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.drawing.rectangle">Rectangle</a> structure.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void Union(Rectangle rectangle)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub Union(rectangle 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">rectangle</span></td>
      <td><p>The <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.drawing.rectangle">Rectangle</a> structure to unite with this <a class="xref" href="C1.Framework.Drawing.Gdi.Region.html">Region</a>
object.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="C1_Framework_Drawing_Gdi_Region_Union_" data-uid="C1.Framework.Drawing.Gdi.Region.Union*"></a>
<h4 id="C1_Framework_Drawing_Gdi_Region_Union_C1_Framework_Drawing_Gdi_Region_" data-uid="C1.Framework.Drawing.Gdi.Region.Union(C1.Framework.Drawing.Gdi.Region)">Union(Region)</h4>
<div class="markdown level1 summary"><p>Updates this <a class="xref" href="C1.Framework.Drawing.Gdi.Region.html">Region</a> object to the union of itself and the specified <b>Region</b> object.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void Union(Region region)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub Union(region As Region)</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.Framework.Drawing.Gdi.Region.html">Region</a></td>
      <td><span class="parametername">region</span></td>
      <td><p>The <a class="xref" href="C1.Framework.Drawing.Gdi.Region.html">Region</a> object to unite with this <b>Region</b> object.</p>
</td>
    </tr>
  </tbody>
</table>
</div>