# C1.DataCollection.FilterExpression.QueryFromExpression

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<h1 id="C1_DataCollection_FilterExpression_QueryFromExpression_" data-uid="C1.DataCollection.FilterExpression.QueryFromExpression*">QueryFromExpression Method
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<a id="C1_DataCollection_FilterExpression_QueryFromExpression_" data-uid="C1.DataCollection.FilterExpression.QueryFromExpression*"></a>
<h4 id="C1_DataCollection_FilterExpression_QueryFromExpression_C1_DataCollection_FilterExpression_System_Collections_Generic_IEnumerable_System_String__" data-uid="C1.DataCollection.FilterExpression.QueryFromExpression(C1.DataCollection.FilterExpression,System.Collections.Generic.IEnumerable{System.String})">QueryFromExpression(FilterExpression, IEnumerable&lt;string&gt;)</h4>
<div class="markdown level1 summary"><p>Gets the query back from the expression. If the query can not be determined it returns an empty string.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public static string QueryFromExpression(FilterExpression expression, IEnumerable&lt;string&gt; fields)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Shared Function QueryFromExpression(expression As FilterExpression, fields As IEnumerable(Of String)) As String</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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    <tr>
      <td><a class="xref" href="C1.DataCollection.FilterExpression.html">FilterExpression</a></td>
      <td><span class="parametername">expression</span></td>
      <td><p>The expression to get the query from.</p>
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    </tr>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1">IEnumerable</a>&lt;<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a>&gt;</td>
      <td><span class="parametername">fields</span></td>
      <td><p>The fields applied to the query.</p>
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    </tr>
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<h5 class="returns">Returns</h5>
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  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td></td>
    </tr>
  </tbody>
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<h5 id="C1_DataCollection_FilterExpression_QueryFromExpression_C1_DataCollection_FilterExpression_System_Collections_Generic_IEnumerable_System_String___remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>This method performs the opposite of <a class="xref" href="C1.DataCollection.FilterExpression.FromString.html#C1_DataCollection_FilterExpression_FromString_System_String_System_Collections_Generic_IEnumerable_System_String__System_Boolean_System_Boolean_System_Boolean_">FromString(string, IEnumerable&lt;string&gt;, bool, bool, bool)</a> method.</p>
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