# C1.Util.DX.DXUtil.SelectMany

## Content

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<h1 id="C1_Util_DX_DXUtil_SelectMany_" data-uid="C1.Util.DX.DXUtil.SelectMany*">SelectMany Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Util_DX_DXUtil_SelectMany_" data-uid="C1.Util.DX.DXUtil.SelectMany*"></a>
<h4 id="C1_Util_DX_DXUtil_SelectMany__2_System_Collections_Generic_IEnumerable___0__System_Func___0_System_Collections_Generic_IEnumerable___1___" data-uid="C1.Util.DX.DXUtil.SelectMany``2(System.Collections.Generic.IEnumerable{``0},System.Func{``0,System.Collections.Generic.IEnumerable{``1}})">SelectMany&lt;TSource, TResult&gt;(IEnumerable&lt;TSource&gt;, Func&lt;TSource, IEnumerable&lt;TResult&gt;&gt;)</h4>
<div class="markdown level1 summary"><p>Select elements from an enumeration.</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 static IEnumerable&lt;TResult&gt; SelectMany&lt;TSource, TResult&gt;(IEnumerable&lt;TSource&gt; source, Func&lt;TSource, IEnumerable&lt;TResult&gt;&gt; selector)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Shared Function SelectMany(Of TSource, TResult)(source As IEnumerable(Of TSource), selector As Func(Of TSource, IEnumerable(Of TResult))) As IEnumerable(Of TResult)</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>
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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1">IEnumerable</a>&lt;TSource&gt;</td>
      <td><span class="parametername">source</span></td>
      <td><p>The source.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.func-2">Func</a>&lt;TSource, <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1">IEnumerable</a>&lt;TResult&gt;&gt;</td>
      <td><span class="parametername">selector</span></td>
      <td><p>The selector.</p>
</td>
    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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  </thead>
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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1">IEnumerable</a>&lt;TResult&gt;</td>
      <td><p>A enumeration of selected values</p>
</td>
    </tr>
  </tbody>
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<h5 class="typeParameters">Type Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><span class="parametername">TSource</span></td>
      <td><p>The type of the T source.</p>
</td>
    </tr>
    <tr>
      <td><span class="parametername">TResult</span></td>
      <td><p>The type of the T result.</p>
</td>
    </tr>
  </tbody>
</table>
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