# C1.DataCollection.C1DataCollectionList-1.Add

## Content

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



<h1 id="C1_DataCollection_C1DataCollectionList_1_Add_" data-uid="C1.DataCollection.C1DataCollectionList`1.Add*">Add Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_DataCollection_C1DataCollectionList_1_Add_" data-uid="C1.DataCollection.C1DataCollectionList`1.Add*"></a>
<h4 id="C1_DataCollection_C1DataCollectionList_1_Add__0_" data-uid="C1.DataCollection.C1DataCollectionList`1.Add(`0)">Add(T)</h4>
<div class="markdown level1 summary"><p>Adds an item to the <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1">ICollection&lt;T&gt;</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 Add(T item)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub Add(item As T)</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><span class="xref">T</span></td>
      <td><span class="parametername">item</span></td>
      <td><p>The object to add to the <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1">ICollection&lt;T&gt;</a>.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="implements">Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.icollection-1.add">ICollection&lt;T&gt;.Add(T)</a></div>
</div>