# GrapeCity.Win.Spread.InputMan.CellType.Fields.NumberDisplayFieldCollection.OnValidateNewItems

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="GrapeCity_Win_Spread_InputMan_CellType_Fields_NumberDisplayFieldCollection_OnValidateNewItems_" data-uid="GrapeCity.Win.Spread.InputMan.CellType.Fields.NumberDisplayFieldCollection.OnValidateNewItems*">OnValidateNewItems Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="GrapeCity_Win_Spread_InputMan_CellType_Fields_NumberDisplayFieldCollection_OnValidateNewItems_" data-uid="GrapeCity.Win.Spread.InputMan.CellType.Fields.NumberDisplayFieldCollection.OnValidateNewItems*"></a>
<h4 id="GrapeCity_Win_Spread_InputMan_CellType_Fields_NumberDisplayFieldCollection_OnValidateNewItems_System_Object_System_Object___" data-uid="GrapeCity.Win.Spread.InputMan.CellType.Fields.NumberDisplayFieldCollection.OnValidateNewItems(System.Object,System.Object[])">OnValidateNewItems(object, object[])</h4>
<div class="markdown level1 summary"><p>Performs additional custom processes to validating adding items.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">protected override void OnValidateNewItems(object oldItem, object[] newItems)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Protected Overrides Sub OnValidateNewItems(oldItem As Object, newItems As Object())</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><span class="parametername">oldItem</span></td>
      <td><p>An <b>object</b> indicates the old item when set item.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a>[]</td>
      <td><span class="parametername">newItems</span></td>
      <td><p>An <b>object</b> array indicates the new items.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="GrapeCity.Win.Spread.InputMan.CellType.Fields.DisplayFieldCollection-1.OnValidateNewItems.html#GrapeCity_Win_Spread_InputMan_CellType_Fields_DisplayFieldCollection_1_OnValidateNewItems_System_Object_System_Object___">DisplayFieldCollection&lt;NumberDisplayField&gt;.OnValidateNewItems(object, object[])</a></div>
</div>