# C1.Win.FlexGrid.C1FlexGridBase.GetUnboundValue

## Content

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<h1 id="C1_Win_FlexGrid_C1FlexGridBase_GetUnboundValue" data-uid="C1.Win.FlexGrid.C1FlexGridBase.GetUnboundValue" class="text-break">GetUnboundValue Event
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<div class="markdown level0 summary"><p>Fires when the grid needs to retrieve data for an unbound cell.</p>
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<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.FlexGrid.html">C1.Win.FlexGrid</a></h6>
<h6><strong>Assembly</strong>: C1.Win.FlexGrid.10.dll</h6>
<h5 id="C1_Win_FlexGrid_C1FlexGridBase_GetUnboundValue_syntax">Syntax</h5>
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  <pre><code class="lang-csharp hljs">public event UnboundValueEventHandler GetUnboundValue</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Event GetUnboundValue As UnboundValueEventHandler</code></pre>
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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.Win.FlexGrid.UnboundValueEventHandler.html">UnboundValueEventHandler</a></td>
      <td>Fires when the grid needs to retrieve data for an unbound cell.</td>
    </tr>
  </tbody>
</table>
<h5 id="C1_Win_FlexGrid_C1FlexGridBase_GetUnboundValue_remarks"><strong>Remarks</strong></h5>
<div class="markdown level0 remarks"><p>This event fires in bound mode when the grid contains unbound columns. 
Unbound columns are columns that have the <b>Name</b> property set to values
that do not map to columns in the data source. The information in unbound columns
must be provided by the application, by setting the <b>Value</b> property of the
<a class="xref" href="C1.Win.FlexGrid.UnboundValueEventHandler.html">UnboundValueEventHandler</a> parameter.</p>
<p>The <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.data.datatable">DataTable</a> class supports calculated columns that in many 
situations can be used instead of unbound columns.</p>
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