# C1.Win.TreeView.C1CheckListSelectedItemCollection.AddRange

## Content

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<h1 id="C1_Win_TreeView_C1CheckListSelectedItemCollection_AddRange_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.AddRange*">AddRange Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_TreeView_C1CheckListSelectedItemCollection_AddRange_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.AddRange*"></a>
<h4 id="C1_Win_TreeView_C1CheckListSelectedItemCollection_AddRange_System_Collections_Generic_IEnumerable_C1_Win_TreeView_C1CheckListItem__" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.AddRange(System.Collections.Generic.IEnumerable{C1.Win.TreeView.C1CheckListItem})">AddRange(IEnumerable&lt;C1CheckListItem&gt;)</h4>
<div class="markdown level1 summary"><p>Adds the items of the specified collection to the end of the <a class="xref" href="C1.Win.TreeView.C1CheckListSelectedItemCollection.html">C1CheckListSelectedItemCollection</a>.</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 AddRange(IEnumerable&lt;C1CheckListItem&gt; collection)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub AddRange(collection As IEnumerable(Of C1CheckListItem))</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.collections.generic.ienumerable-1">IEnumerable</a>&lt;<a class="xref" href="C1.Win.TreeView.C1CheckListItem.html">C1CheckListItem</a>&gt;</td>
      <td><span class="parametername">collection</span></td>
      <td><p>The specified collection of items.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="C1_Win_TreeView_C1CheckListSelectedItemCollection_AddRange_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.AddRange*"></a>
<h4 id="C1_Win_TreeView_C1CheckListSelectedItemCollection_AddRange_System_Collections_IEnumerable_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.AddRange(System.Collections.IEnumerable)">AddRange(IEnumerable)</h4>
<div class="markdown level1 summary"><p>Adds the items of the specified collection to the end of the <a class="xref" href="C1.Win.TreeView.C1CheckListSelectedItemCollection.html">C1CheckListSelectedItemCollection</a>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void AddRange(IEnumerable collection)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub AddRange(collection As IEnumerable)</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="https://learn.microsoft.com/dotnet/api/system.collections.ienumerable">IEnumerable</a></td>
      <td><span class="parametername">collection</span></td>
      <td><p>The specified collection of items.</p>
</td>
    </tr>
  </tbody>
</table>
</div>