# C1.Web.Mvc.Sheet.FlexSheet.OnClientPrepareChangingColumn

## Content

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<h1 id="C1_Web_Mvc_Sheet_FlexSheet_OnClientPrepareChangingColumn_" data-uid="C1.Web.Mvc.Sheet.FlexSheet.OnClientPrepareChangingColumn*">OnClientPrepareChangingColumn Property
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<a id="C1_Web_Mvc_Sheet_FlexSheet_OnClientPrepareChangingColumn_" data-uid="C1.Web.Mvc.Sheet.FlexSheet.OnClientPrepareChangingColumn*"></a>
<h4 id="C1_Web_Mvc_Sheet_FlexSheet_OnClientPrepareChangingColumn" data-uid="C1.Web.Mvc.Sheet.FlexSheet.OnClientPrepareChangingColumn">OnClientPrepareChangingColumn</h4>
<div class="markdown level1 summary"><p>Occurs before inserting or deleting columns.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public string OnClientPrepareChangingColumn { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Property OnClientPrepareChangingColumn As String</code></pre>
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