# C1.DataCollection.C1CacheDataCollection-1.ReplaceAsync

## Content

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<h1 id="C1_DataCollection_C1CacheDataCollection_1_ReplaceAsync_" data-uid="C1.DataCollection.C1CacheDataCollection`1.ReplaceAsync*">ReplaceAsync Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_DataCollection_C1CacheDataCollection_1_ReplaceAsync_" data-uid="C1.DataCollection.C1CacheDataCollection`1.ReplaceAsync*"></a>
<h4 id="C1_DataCollection_C1CacheDataCollection_1_ReplaceAsync_System_Int32__0_System_Threading_CancellationToken_" data-uid="C1.DataCollection.C1CacheDataCollection`1.ReplaceAsync(System.Int32,`0,System.Threading.CancellationToken)">ReplaceAsync(int, T, CancellationToken)</h4>
<div class="markdown level1 summary"><p>Replaces the item at the specified <code class="paramref">index</code> by the specified <code class="paramref">item</code>.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public override Task&lt;int&gt; ReplaceAsync(int index, T item, CancellationToken cancellationToken = default)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Overrides Function ReplaceAsync(index As Integer, item As T, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Integer)</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.int32">int</a></td>
      <td><span class="parametername">index</span></td>
      <td><p>The index.</p>
</td>
    </tr>
    <tr>
      <td><span class="xref">T</span></td>
      <td><span class="parametername">item</span></td>
      <td><p>The item.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.threading.cancellationtoken">CancellationToken</a></td>
      <td><span class="parametername">cancellationToken</span></td>
      <td><p>The cancellation token.</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.threading.tasks.task-1">Task</a>&lt;<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a>&gt;</td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="C1.DataCollection.C1WrapDataCollection-2.ReplaceAsync.html#C1_DataCollection_C1WrapDataCollection_2_ReplaceAsync_System_Int32__0_System_Threading_CancellationToken_">C1WrapDataCollection&lt;T, T&gt;.ReplaceAsync(int, T, CancellationToken)</a></div>
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