# C1.Web.Mvc.Fluent.ColumnBaseBuilder-2.IsRequired

## Content

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<h1 id="C1_Web_Mvc_Fluent_ColumnBaseBuilder_2_IsRequired_" data-uid="C1.Web.Mvc.Fluent.ColumnBaseBuilder`2.IsRequired*">IsRequired Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_Web_Mvc_Fluent_ColumnBaseBuilder_2_IsRequired_" data-uid="C1.Web.Mvc.Fluent.ColumnBaseBuilder`2.IsRequired*"></a>
<h4 id="C1_Web_Mvc_Fluent_ColumnBaseBuilder_2_IsRequired_System_Nullable_System_Boolean__" data-uid="C1.Web.Mvc.Fluent.ColumnBaseBuilder`2.IsRequired(System.Nullable{System.Boolean})">IsRequired(bool?)</h4>
<div class="markdown level1 summary"><p>Configurates <a class="xref" href="C1.Web.Mvc.ColumnBase.IsRequired.html#C1_Web_Mvc_ColumnBase_IsRequired">IsRequired</a>.
Sets a value that determines whether values in the column are required.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public TBuilder IsRequired(bool? value)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Function IsRequired(value As Boolean?) As TBuilder</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="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>
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  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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    <tr>
      <td><span class="xref">TBuilder</span></td>
      <td><p>Current builder.</p>
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<h5 id="C1_Web_Mvc_Fluent_ColumnBaseBuilder_2_IsRequired_System_Nullable_System_Boolean___remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>By default, this property is set to null, which means values are required, but string columns may contain empty strings. When set to true, values are required and empty strings are not allowed. When set to false, null values and empty strings are allowed.</p>
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