# C1.LiveLinq.IndexedQueryExtensions.OrderByDescending

## Content

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<h1 id="C1_LiveLinq_IndexedQueryExtensions_OrderByDescending_" data-uid="C1.LiveLinq.IndexedQueryExtensions.OrderByDescending*">OrderByDescending Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_LiveLinq_IndexedQueryExtensions_OrderByDescending_" data-uid="C1.LiveLinq.IndexedQueryExtensions.OrderByDescending*"></a>
<h4 id="C1_LiveLinq_IndexedQueryExtensions_OrderByDescending__2_C1_LiveLinq_Indexing_IIndexedSource___0__System_Linq_Expressions_Expression_System_Func___0___1___" data-uid="C1.LiveLinq.IndexedQueryExtensions.OrderByDescending``2(C1.LiveLinq.Indexing.IIndexedSource{``0},System.Linq.Expressions.Expression{System.Func{``0,``1}})">OrderByDescending&lt;T, TKey&gt;(IIndexedSource&lt;T&gt;, Expression&lt;Func&lt;T, TKey&gt;&gt;)</h4>
<div class="markdown level1 summary"><p>Sorts the elements of a collection in descending order.</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 Ordering&lt;T&gt; OrderByDescending&lt;T, TKey&gt;(this IIndexedSource&lt;T&gt; source, Expression&lt;Func&lt;T, TKey&gt;&gt; keySelector)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Shared Function OrderByDescending(Of T, TKey)(source As IIndexedSource(Of T), keySelector As Expression(Of Func(Of T, TKey))) As Ordering(Of T)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="C1.LiveLinq.Indexing.IIndexedSource-1.html">IIndexedSource</a>&lt;T&gt;</td>
      <td><span class="parametername">source</span></td>
      <td><p>A collection of values to order.</p>
</td>
    </tr>
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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 an element.</p>
</td>
    </tr>
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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>An <a class="xref" href="C1.LiveLinq.Indexing.IIndexedSource-1.html">IIndexedSource&lt;T&gt;</a> whose elements are sorted in descending order according to a key.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="typeParameters">Type Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Name</th>
      <th>Description</th>
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      <td><span class="parametername">T</span></td>
      <td><p>The type of the elements of <i>source</i>.</p>
</td>
    </tr>
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      <td><span class="parametername">TKey</span></td>
      <td><p>The type of the key returned by <i>keySelector</i>.</p>
</td>
    </tr>
  </tbody>
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