# C1.LiveLinq.Ordering-1.ThenByDescending

## Content

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<h1 id="C1_LiveLinq_Ordering_1_ThenByDescending_" data-uid="C1.LiveLinq.Ordering`1.ThenByDescending*">ThenByDescending Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_LiveLinq_Ordering_1_ThenByDescending_" data-uid="C1.LiveLinq.Ordering`1.ThenByDescending*"></a>
<h4 id="C1_LiveLinq_Ordering_1_ThenByDescending__1_System_Linq_Expressions_Expression_System_Func__0___0___" data-uid="C1.LiveLinq.Ordering`1.ThenByDescending``1(System.Linq.Expressions.Expression{System.Func{`0,``0}})">ThenByDescending&lt;TKey&gt;(Expression&lt;Func&lt;T, TKey&gt;&gt;)</h4>
<div class="markdown level1 summary"><p>Performs a subsequent ordering of the elements in a collection in descending order according to a key.</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 Ordering&lt;T&gt; ThenByDescending&lt;TKey&gt;(Expression&lt;Func&lt;T, TKey&gt;&gt; keySelector)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Function ThenByDescending(Of TKey)(keySelector As Expression(Of Func(Of T, TKey))) As Ordering(Of T)</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.linq.expressions.expression-1">Expression</a>&lt;<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.func-2">Func</a>&lt;T, TKey&gt;&gt;</td>
      <td><span class="parametername">keySelector</span></td>
      <td><p>A function to extract a key from each element.</p>
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<h5 class="returns">Returns</h5>
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      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="C1.LiveLinq.Ordering-1.html">Ordering</a>&lt;T&gt;</td>
      <td><p>A collection whose elements are sorted in descending order according to a key.</p>
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<h5 class="typeParameters">Type Parameters</h5>
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      <th>Name</th>
      <th>Description</th>
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      <td><span class="parametername">TKey</span></td>
      <td><p>The type of the key returned by <i>keySelector</i>.</p>
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