# C1.Win.List.DropDownList

## Content

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



  <h1 id="C1_Win_List_DropDownList" data-uid="C1.Win.List.DropDownList" class="text-break">DropDownList Class
</h1>
  <div class="markdown level0 summary"></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="https://learn.microsoft.com/dotnet/api/system.windows.forms.control">Control</a></div>
    <div class="level4"><a class="xref" href="C1.Win.List.ListBase.Frame.html">Frame</a></div>
    <div class="level5"><a class="xref" href="C1.Win.List.ListBase.C1ListBase.html">C1ListBase</a></div>
    <div class="level6"><a class="xref" href="C1.Win.List.C1List.html">C1List</a></div>
    <div class="level7"><span class="xref">DropDownList</span></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.idroptarget">IDropTarget</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.isynchronizeinvoke">ISynchronizeInvoke</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.iwin32window">IWin32Window</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.ibindablecomponent">IBindableComponent</a></div>
    <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><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.componentmodel.isupportinitialize">ISupportInitialize</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.List.html">C1.Win.List</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.List.4.8.dll</h6>
  <h5 id="C1_Win_List_DropDownList_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class DropDownList : C1List, IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, ISupportInitialize</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Class DropDownList
    Inherits C1List
    Implements IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, ISupportInitialize</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_List_DropDownList__ctor_C1_Win_List_C1Combo_" data-uid="C1.Win.List.DropDownList.#ctor(C1.Win.List.C1Combo)">
          <a class="xref" href="C1.Win.List.DropDownList.-ctor.html#C1_Win_List_DropDownList__ctor_C1_Win_List_C1Combo_">DropDownList(C1Combo)</a>
        </td>
        <td class="markdown level1 summary"><p>Initialize a new instance of DroDownList class.</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_List_DropDownList_EndInit" data-uid="C1.Win.List.DropDownList.EndInit">
          <a class="xref" href="C1.Win.List.DropDownList.EndInit.html#C1_Win_List_DropDownList_EndInit">EndInit()</a>
        </td>
        <td class="markdown level1 summary"><p>Signals the object that initialization is complete.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_List_DropDownList_GetService_System_Type_" data-uid="C1.Win.List.DropDownList.GetService(System.Type)">
          <a class="xref" href="C1.Win.List.DropDownList.GetService.html#C1_Win_List_DropDownList_GetService_System_Type_">GetService(Type)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_List_DropDownList_OnChange_System_EventArgs_" data-uid="C1.Win.List.DropDownList.OnChange(System.EventArgs)">
          <a class="xref" href="C1.Win.List.DropDownList.OnChange.html#C1_Win_List_DropDownList_OnChange_System_EventArgs_">OnChange(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"><p>Raised when the grids cell content has been modified.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_List_DropDownList_OnListCountChanged" data-uid="C1.Win.List.DropDownList.OnListCountChanged">
          <a class="xref" href="C1.Win.List.DropDownList.OnListCountChanged.html#C1_Win_List_DropDownList_OnListCountChanged">OnListCountChanged()</a>
        </td>
        <td class="markdown level1 summary"><p>Calls when binding list changed.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_List_DropDownList_OnMouseDown_System_Windows_Forms_MouseEventArgs_" data-uid="C1.Win.List.DropDownList.OnMouseDown(System.Windows.Forms.MouseEventArgs)">
          <a class="xref" href="C1.Win.List.DropDownList.OnMouseDown.html#C1_Win_List_DropDownList_OnMouseDown_System_Windows_Forms_MouseEventArgs_">OnMouseDown(MouseEventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_List_DropDownList_OnMouseMove_System_Windows_Forms_MouseEventArgs_" data-uid="C1.Win.List.DropDownList.OnMouseMove(System.Windows.Forms.MouseEventArgs)">
          <a class="xref" href="C1.Win.List.DropDownList.OnMouseMove.html#C1_Win_List_DropDownList_OnMouseMove_System_Windows_Forms_MouseEventArgs_">OnMouseMove(MouseEventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_List_DropDownList_OnSelectionChanged_System_EventArgs_" data-uid="C1.Win.List.DropDownList.OnSelectionChanged(System.EventArgs)">
          <a class="xref" href="C1.Win.List.DropDownList.OnSelectionChanged.html#C1_Win_List_DropDownList_OnSelectionChanged_System_EventArgs_">OnSelectionChanged(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"><p>Raised when a selection has changed.</p>
</td>
      </tr>
    </tbody>
  </table>

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