# C1.Win.Ribbon.RibbonDropDownBase

## Content

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



  <h1 id="C1_Win_Ribbon_RibbonDropDownBase" data-uid="C1.Win.Ribbon.RibbonDropDownBase" class="text-break">RibbonDropDownBase Class
</h1>
  <div class="markdown level0 summary"><p><a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.html">RibbonDropDownBase</a> is a <a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a>
that can contain other Ribbon items in the drop-down portion.
It serves as a base class for
<a class="xref" href="C1.Win.Ribbon.RibbonComboBox.html">RibbonComboBox</a>,
<a class="xref" href="C1.Win.Ribbon.RibbonApplicationMenu.html">RibbonApplicationMenu</a>,
<a class="xref" href="C1.Win.Ribbon.RibbonMenu.html">RibbonMenu</a>, and
<a class="xref" href="C1.Win.Ribbon.RibbonSplitButton.html">RibbonSplitButton</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.marshalbyrefobject">MarshalByRefObject</a></div>
    <div class="level2"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.component">Component</a></div>
    <div class="level3"><a class="xref" href="C1.Win.Ribbon.RibbonItem.html">RibbonItem</a></div>
    <div class="level4"><a class="xref" href="C1.Win.Ribbon.RibbonIconItem.html">RibbonIconItem</a></div>
    <div class="level5"><span class="xref">RibbonDropDownBase</span></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.C1BackstageView.html">C1BackstageView</a></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.RibbonApplicationMenu.html">RibbonApplicationMenu</a></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.RibbonComboBox.html">RibbonComboBox</a></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.RibbonDatePicker.html">RibbonDatePicker</a></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.RibbonGallery.html">RibbonGallery</a></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.RibbonMenu.html">RibbonMenu</a></div>
      <div class="level6"><a class="xref" href="C1.Win.Ribbon.RibbonSplitButton.html">RibbonSplitButton</a></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.icomponent">IComponent</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.idisposable">IDisposable</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_RibbonDropDownBase_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public abstract class RibbonDropDownBase : RibbonIconItem, IComponent, IDisposable</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public MustInherit Class RibbonDropDownBase
    Inherits RibbonIconItem
    Implements IComponent, IDisposable</code></pre>
  </div>
  <h3 id="constructors">Constructors
</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_RibbonDropDownBase__ctor" data-uid="C1.Win.Ribbon.RibbonDropDownBase.#ctor">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.-ctor.html#C1_Win_Ribbon_RibbonDropDownBase__ctor">RibbonDropDownBase()</a>
        </td>
        <td class="markdown level1 summary"><p>Creates a new instance of <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.html">RibbonDropDownBase</a>.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonDropDownBase__ctor_System_Drawing_Image_System_Drawing_Image_" data-uid="C1.Win.Ribbon.RibbonDropDownBase.#ctor(System.Drawing.Image,System.Drawing.Image)">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.-ctor.html#C1_Win_Ribbon_RibbonDropDownBase__ctor_System_Drawing_Image_System_Drawing_Image_">RibbonDropDownBase(Image, Image)</a>
        </td>
        <td class="markdown level1 summary"><p>Creates a new instance of <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.html">RibbonDropDownBase</a>.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="properties">Properties
</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_RibbonDropDownBase_DroppedDown" data-uid="C1.Win.Ribbon.RibbonDropDownBase.DroppedDown">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.DroppedDown.html#C1_Win_Ribbon_RibbonDropDownBase_DroppedDown">DroppedDown</a>
        </td>
        <td class="markdown level1 summary"><p>Gets or sets whether the drop-down portion of this element is visible.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonDropDownBase_Items" data-uid="C1.Win.Ribbon.RibbonDropDownBase.Items">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.Items.html#C1_Win_Ribbon_RibbonDropDownBase_Items">Items</a>
        </td>
        <td class="markdown level1 summary"><p>Gets the collection of items in the drop-down portion of this <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.html">RibbonDropDownBase</a>.</p>
</td>
      </tr>
    </tbody>
  </table>
  <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_RibbonDropDownBase_OnDropDown_System_EventArgs_" data-uid="C1.Win.Ribbon.RibbonDropDownBase.OnDropDown(System.EventArgs)">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.OnDropDown.html#C1_Win_Ribbon_RibbonDropDownBase_OnDropDown_System_EventArgs_">OnDropDown(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"><p>Raises the <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.DropDown.html">DropDown</a> event.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonDropDownBase_OnDropDownClosed_System_EventArgs_" data-uid="C1.Win.Ribbon.RibbonDropDownBase.OnDropDownClosed(System.EventArgs)">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.OnDropDownClosed.html#C1_Win_Ribbon_RibbonDropDownBase_OnDropDownClosed_System_EventArgs_">OnDropDownClosed(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"><p>Raises the <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.DropDownClosed.html">DropDownClosed</a> event.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonDropDownBase_ShouldSerializeItems" data-uid="C1.Win.Ribbon.RibbonDropDownBase.ShouldSerializeItems">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.ShouldSerializeItems.html#C1_Win_Ribbon_RibbonDropDownBase_ShouldSerializeItems">ShouldSerializeItems()</a>
        </td>
        <td class="markdown level1 summary"><p>This member is for internal use only.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="events">Events
</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_RibbonDropDownBase_DropDown" data-uid="C1.Win.Ribbon.RibbonDropDownBase.DropDown">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.DropDown.html">DropDown</a>
        </td>
        <td class="markdown level1 summary"><p>Occurs when the drop-down portion of this element is shown.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_Ribbon_RibbonDropDownBase_DropDownClosed" data-uid="C1.Win.Ribbon.RibbonDropDownBase.DropDownClosed">
          <a class="xref" href="C1.Win.Ribbon.RibbonDropDownBase.DropDownClosed.html">DropDownClosed</a>
        </td>
        <td class="markdown level1 summary"><p>Indicates that the drop-down portion of this element has closed.</p>
</td>
      </tr>
    </tbody>
  </table>

</div>