# C1.Win.TreeView.C1CheckListSelectedItemCollection.IndexOf

## Content

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



<h1 id="C1_Win_TreeView_C1CheckListSelectedItemCollection_IndexOf_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.IndexOf*">IndexOf Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_TreeView_C1CheckListSelectedItemCollection_IndexOf_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.IndexOf*"></a>
<h4 id="C1_Win_TreeView_C1CheckListSelectedItemCollection_IndexOf_C1_Win_TreeView_C1CheckListItem_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.IndexOf(C1.Win.TreeView.C1CheckListItem)">IndexOf(C1CheckListItem)</h4>
<div class="markdown level1 summary"><p>Searches for the specified item and returns the zero-based index.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public int IndexOf(C1CheckListItem item)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function IndexOf(item As C1CheckListItem) As Integer</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.Win.TreeView.C1CheckListItem.html">C1CheckListItem</a></td>
      <td><span class="parametername">item</span></td>
      <td><p>The specified item.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td></td>
    </tr>
  </tbody>
</table>


<a id="C1_Win_TreeView_C1CheckListSelectedItemCollection_IndexOf_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.IndexOf*"></a>
<h4 id="C1_Win_TreeView_C1CheckListSelectedItemCollection_IndexOf_System_Object_" data-uid="C1.Win.TreeView.C1CheckListSelectedItemCollection.IndexOf(System.Object)">IndexOf(object)</h4>
<div class="markdown level1 summary"><p>Searches for the specified item and returns the zero-based index.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public int IndexOf(object value)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Function IndexOf(value As Object) As Integer</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.object">object</a></td>
      <td><span class="parametername">value</span></td>
      <td><p>The specified item.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="implements">Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ilist.indexof">IList.IndexOf(object)</a></div>
</div>