# C1.DataCollection.FilterUnaryExpression

## Content

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  <h1 id="C1_DataCollection_FilterUnaryExpression" data-uid="C1.DataCollection.FilterUnaryExpression" class="text-break">FilterUnaryExpression Class
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  <div class="markdown level0 summary"><p>Describes a concrete filter expression.</p>
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  <div class="markdown level0 conceptual"></div>
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    <h5>Inheritance</h5>
    <div class="level0"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
    <div class="level1"><a class="xref" href="C1.DataCollection.FilterExpression.html">FilterExpression</a></div>
    <div class="level2"><a class="xref" href="C1.DataCollection.FilterOperationExpression.html">FilterOperationExpression</a></div>
    <div class="level3"><span class="xref">FilterUnaryExpression</span></div>
      <div class="level4"><a class="xref" href="C1.DataCollection.FilterUnaryExpression-1.html">FilterUnaryExpression</a>&lt;T&gt;</div>
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  <h6><strong>Namespace</strong>: <a class="xref" href="C1.DataCollection.html">C1.DataCollection</a></h6>
  <h6><strong>Assembly</strong>: C1.DataCollection.dll</h6>
  <h5 id="C1_DataCollection_FilterUnaryExpression_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">[Obsolete(&quot;Use FilterOperationExpression class instead.&quot;, true)]
public class FilterUnaryExpression : FilterOperationExpression</code></pre>
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    <pre><code class="lang-vbnet hljs">&lt;Obsolete(&quot;Use FilterOperationExpression class instead.&quot;, True)&gt;
Public Class FilterUnaryExpression
    Inherits FilterOperationExpression</code></pre>
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  <h3 id="constructors">Constructors
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    <thead>
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        <th>Name</th>
        <th>Description</th>
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        <td id="C1_DataCollection_FilterUnaryExpression__ctor_System_String_C1_DataCollection_FilterOperation_System_Object_" data-uid="C1.DataCollection.FilterUnaryExpression.#ctor(System.String,C1.DataCollection.FilterOperation,System.Object)">
          <a class="xref" href="C1.DataCollection.FilterUnaryExpression.-ctor.html#C1_DataCollection_FilterUnaryExpression__ctor_System_String_C1_DataCollection_FilterOperation_System_Object_">FilterUnaryExpression(string, FilterOperation, object)</a>
        </td>
        <td class="markdown level1 summary"><p>Initializes a new instance of the <a class="xref" href="C1.DataCollection.FilterUnaryExpression-1.html">FilterUnaryExpression&lt;T&gt;</a> class.</p>
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  <h3 id="extensionmethods">Extension Methods</h3>
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      <a class="xref" href="C1.DataCollection.ScopedFilterExpressionEx.GetExpresssionInScope.html#C1_DataCollection_ScopedFilterExpressionEx_GetExpresssionInScope_C1_DataCollection_FilterExpression_System_String_">ScopedFilterExpressionEx.GetExpresssionInScope(FilterExpression?, string)</a>
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      <a class="xref" href="C1.DataCollection.ScopedFilterExpressionEx.IsExpresssionInScope.html#C1_DataCollection_ScopedFilterExpressionEx_IsExpresssionInScope_C1_DataCollection_FilterExpression_System_String_">ScopedFilterExpressionEx.IsExpresssionInScope(FilterExpression, string)</a>
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      <a class="xref" href="C1.DataCollection.ScopedFilterExpressionEx.RemoveExpressionInScope.html#C1_DataCollection_ScopedFilterExpressionEx_RemoveExpressionInScope_C1_DataCollection_FilterExpression_System_String_">ScopedFilterExpressionEx.RemoveExpressionInScope(FilterExpression?, string)</a>
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      <a class="xref" href="C1.DataCollection.ScopedFilterExpressionEx.ReplaceExpressionInScope.html#C1_DataCollection_ScopedFilterExpressionEx_ReplaceExpressionInScope_C1_DataCollection_FilterExpression_System_String_C1_DataCollection_FilterExpression_">ScopedFilterExpressionEx.ReplaceExpressionInScope(FilterExpression?, string, FilterExpression?)</a>
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