# C1.Web.Mvc.Fluent.MultiSelectBuilder-1.CustomFilter

## Content

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<h1 id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_CustomFilter_" data-uid="C1.Web.Mvc.Fluent.MultiSelectBuilder`1.CustomFilter*">CustomFilter Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_CustomFilter_" data-uid="C1.Web.Mvc.Fluent.MultiSelectBuilder`1.CustomFilter*"></a>
<h4 id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_CustomFilter_System_String_" data-uid="C1.Web.Mvc.Fluent.MultiSelectBuilder`1.CustomFilter(System.String)">CustomFilter(string)</h4>
<div class="markdown level1 summary"><p>Configurates <a class="xref" href="C1.Web.Mvc.MultiSelect-1.CustomFilter.html#C1_Web_Mvc_MultiSelect_1_CustomFilter">CustomFilter</a>.
Sets the name of a client-side function used to filter the items instead of the built-in matching logic.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public virtual MultiSelectBuilder&lt;T&gt; CustomFilter(string value)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Overridable Function CustomFilter(value As String) As MultiSelectBuilder(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.string">string</a></td>
      <td><span class="parametername">value</span></td>
      <td><p>The value.</p>
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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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      <td><a class="xref" href="C1.Web.Mvc.Fluent.MultiSelectBuilder-1.html">MultiSelectBuilder</a>&lt;T&gt;</td>
      <td><p>Current builder.</p>
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    </tr>
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<h5 id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_CustomFilter_System_String__remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>The function takes three parameters: the data item to test, the current filter text, and the display text after DisplayMemberPath processing. It returns true to include the item and false to exclude it. Requires <a class="xref" href="C1.Web.Mvc.Fluent.MultiSelectBuilder-1.ShowFilterInput.html#C1_Web_Mvc_Fluent_MultiSelectBuilder_1_ShowFilterInput_System_Boolean_">ShowFilterInput(bool)</a> to be true. The default value is null.</p>
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