# C1.Win.Ribbon.RibbonItemCollectionBase

## Content

<div class="doc-site-dotnet-api-container">



  <h1 id="C1_Win_Ribbon_RibbonItemCollectionBase" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase" class="text-break">RibbonItemCollectionBase Class
</h1>
  <div class="markdown level0 summary"><p>Serves as a base class for RibbonItem collections such as
<a class="xref" href="C1.Win.Ribbon.RibbonItemCollection.html">RibbonItemCollection</a> and
<a class="xref" href="C1.Win.Ribbon.RibbonGalleryItemCollection.html">RibbonGalleryItemCollection</a></p>
</div>
  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
    <div class="level1"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.collectionbase">CollectionBase</a></div>
    <div class="level2"><span class="xref">RibbonItemCollectionBase</span></div>
      <div class="level3"><a class="xref" href="C1.Win.Ribbon.QatCustomButtonCollection.html">QatCustomButtonCollection</a></div>
      <div class="level3"><a class="xref" href="C1.Win.Ribbon.RibbonGalleryItemCollection.html">RibbonGalleryItemCollection</a></div>
      <div class="level3"><a class="xref" href="C1.Win.Ribbon.RibbonItemCollection.html">RibbonItemCollection</a></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ilist">IList</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.icollection">ICollection</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ienumerable">IEnumerable</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.Ribbon.html">C1.Win.Ribbon</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.Ribbon.10.dll</h6>
  <h5 id="C1_Win_Ribbon_RibbonItemCollectionBase_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public abstract class RibbonItemCollectionBase : CollectionBase, IList, ICollection, IEnumerable</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public MustInherit Class RibbonItemCollectionBase
    Inherits CollectionBase
    Implements IList, ICollection, IEnumerable</code></pre>
  </div>
  <h3 id="methods">Methods
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_Add_C1_Win_Ribbon_RibbonItem_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.Add(C1.Win.Ribbon.RibbonItem)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.Add.html#C1_Win_Ribbon_RibbonItemCollectionBase_Add_C1_Win_Ribbon_RibbonItem_">Add(RibbonItem)</a>
        </td>
        <td class="markdown level1 summary"><p>Adds the specified <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a> to the collection.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_BeginUpdate" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.BeginUpdate">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.BeginUpdate.html#C1_Win_Ribbon_RibbonItemCollectionBase_BeginUpdate">BeginUpdate()</a>
        </td>
        <td class="markdown level1 summary"><p>Maintains performance while items are being added or removed from the collection.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_ClearAndDisposeItems" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.ClearAndDisposeItems">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.ClearAndDisposeItems.html#C1_Win_Ribbon_RibbonItemCollectionBase_ClearAndDisposeItems">ClearAndDisposeItems()</a>
        </td>
        <td class="markdown level1 summary"><p>Removes all items from the collection, then disposes the items.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_ClearAndDisposeItemsDirect" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.ClearAndDisposeItemsDirect">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.ClearAndDisposeItemsDirect.html#C1_Win_Ribbon_RibbonItemCollectionBase_ClearAndDisposeItemsDirect">ClearAndDisposeItemsDirect()</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_Contains_C1_Win_Ribbon_RibbonItem_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.Contains(C1.Win.Ribbon.RibbonItem)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.Contains.html#C1_Win_Ribbon_RibbonItemCollectionBase_Contains_C1_Win_Ribbon_RibbonItem_">Contains(RibbonItem)</a>
        </td>
        <td class="markdown level1 summary"><p>Determines whether this collection contains the specified <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a>.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_Contains_System_String_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.Contains(System.String)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.Contains.html#C1_Win_Ribbon_RibbonItemCollectionBase_Contains_System_String_">Contains(string)</a>
        </td>
        <td class="markdown level1 summary"><p>Determines whether the collection contains a <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a> with the given name.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_EndUpdate" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.EndUpdate">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.EndUpdate.html#C1_Win_Ribbon_RibbonItemCollectionBase_EndUpdate">EndUpdate()</a>
        </td>
        <td class="markdown level1 summary"><p>Resumes processing after it has been suspended by a call to <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.BeginUpdate.html#C1_Win_Ribbon_RibbonItemCollectionBase_BeginUpdate">BeginUpdate()</a>.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_IndexOf_C1_Win_Ribbon_RibbonItem_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.IndexOf(C1.Win.Ribbon.RibbonItem)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.IndexOf.html#C1_Win_Ribbon_RibbonItemCollectionBase_IndexOf_C1_Win_Ribbon_RibbonItem_">IndexOf(RibbonItem)</a>
        </td>
        <td class="markdown level1 summary"><p>Determines the index of a specific <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a> in the collection.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_IndexOfRef_C1_Win_Ribbon_RibbonItem_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.IndexOfRef(C1.Win.Ribbon.RibbonItem)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.IndexOfRef.html#C1_Win_Ribbon_RibbonItemCollectionBase_IndexOfRef_C1_Win_Ribbon_RibbonItem_">IndexOfRef(RibbonItem)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_Insert_System_Int32_C1_Win_Ribbon_RibbonItem_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.Insert(System.Int32,C1.Win.Ribbon.RibbonItem)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.Insert.html#C1_Win_Ribbon_RibbonItemCollectionBase_Insert_System_Int32_C1_Win_Ribbon_RibbonItem_">Insert(int, RibbonItem)</a>
        </td>
        <td class="markdown level1 summary"><p>Inserts the specified <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a> into this collection at the given index.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_OnClear" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.OnClear">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.OnClear.html#C1_Win_Ribbon_RibbonItemCollectionBase_OnClear">OnClear()</a>
        </td>
        <td class="markdown level1 summary"><p>Performs additional custom processes when clearing the contents of
the <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.html">RibbonItemCollectionBase</a> instance.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_OnClearComplete" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.OnClearComplete">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.OnClearComplete.html#C1_Win_Ribbon_RibbonItemCollectionBase_OnClearComplete">OnClearComplete()</a>
        </td>
        <td class="markdown level1 summary"><p>Performs additional custom processes after clearing the contents of
the <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.html">RibbonItemCollectionBase</a> instance.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_OnInsertComplete_System_Int32_System_Object_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.OnInsertComplete(System.Int32,System.Object)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.OnInsertComplete.html#C1_Win_Ribbon_RibbonItemCollectionBase_OnInsertComplete_System_Int32_System_Object_">OnInsertComplete(int, object)</a>
        </td>
        <td class="markdown level1 summary"><p>Performs additional custom processes after inserting a <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a>
into the <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.html">RibbonItemCollectionBase</a> instance.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_OnRemoveComplete_System_Int32_System_Object_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.OnRemoveComplete(System.Int32,System.Object)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.OnRemoveComplete.html#C1_Win_Ribbon_RibbonItemCollectionBase_OnRemoveComplete_System_Int32_System_Object_">OnRemoveComplete(int, object)</a>
        </td>
        <td class="markdown level1 summary"><p>Performs additional custom processes after removing a <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a>
from the <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.html">RibbonItemCollectionBase</a> instance.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_OnSetComplete_System_Int32_System_Object_System_Object_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.OnSetComplete(System.Int32,System.Object,System.Object)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.OnSetComplete.html#C1_Win_Ribbon_RibbonItemCollectionBase_OnSetComplete_System_Int32_System_Object_System_Object_">OnSetComplete(int, object, object)</a>
        </td>
        <td class="markdown level1 summary"><p>Performs additional custom processes after setting a <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a>
in the <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.html">RibbonItemCollectionBase</a> instance.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_OnValidate_System_Object_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.OnValidate(System.Object)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.OnValidate.html#C1_Win_Ribbon_RibbonItemCollectionBase_OnValidate_System_Object_">OnValidate(object)</a>
        </td>
        <td class="markdown level1 summary"><p>Checks whather the type of the value argument is allowable for this item collection.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonItemCollectionBase_Remove_C1_Win_Ribbon_RibbonItem_" data-uid="C1.Win.Ribbon.RibbonItemCollectionBase.Remove(C1.Win.Ribbon.RibbonItem)">
          <a class="xref" href="C1.Win.Ribbon.RibbonItemCollectionBase.Remove.html#C1_Win_Ribbon_RibbonItemCollectionBase_Remove_C1_Win_Ribbon_RibbonItem_">Remove(RibbonItem)</a>
        </td>
        <td class="markdown level1 summary"><p>Removes the first occurrence of the specified <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a> from the collection.</p>
</td>
      </tr>
    </tbody>
  </table>

</div>
