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

## Content

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<h1 id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_ShowSelectAllCheckbox_" data-uid="C1.Web.Mvc.Fluent.MultiSelectBuilder`1.ShowSelectAllCheckbox*">ShowSelectAllCheckbox Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_ShowSelectAllCheckbox_" data-uid="C1.Web.Mvc.Fluent.MultiSelectBuilder`1.ShowSelectAllCheckbox*"></a>
<h4 id="C1_Web_Mvc_Fluent_MultiSelectBuilder_1_ShowSelectAllCheckbox_System_Boolean_" data-uid="C1.Web.Mvc.Fluent.MultiSelectBuilder`1.ShowSelectAllCheckbox(System.Boolean)">ShowSelectAllCheckbox(bool)</h4>
<div class="markdown level1 summary"><p>Configurates <a class="xref" href="C1.Web.Mvc.MultiSelect-1.ShowSelectAllCheckbox.html#C1_Web_Mvc_MultiSelect_1_ShowSelectAllCheckbox">ShowSelectAllCheckbox</a>.
Sets whether the control should display a &quot;Select All&quot; checkbox above the items to select or de-select all items.</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 MultiSelectBuilder&lt;T&gt; ShowSelectAllCheckbox(bool value)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Function ShowSelectAllCheckbox(value As Boolean) As MultiSelectBuilder(Of T)</code></pre>
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<h5 class="parameters">Parameters</h5>
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  <thead>
    <tr>
      <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.boolean">bool</a></td>
      <td><span class="parametername">value</span></td>
      <td><p>The value.</p>
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    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.Web.Mvc.Fluent.MultiSelectBuilder-1.html">MultiSelectBuilder</a>&lt;T&gt;</td>
      <td><p>Current builder.</p>
</td>
    </tr>
  </tbody>
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