# C1.Win.TrueDBGrid.DropDownForm

## Content

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



  <h1 id="C1_Win_TrueDBGrid_DropDownForm" data-uid="C1.Win.TrueDBGrid.DropDownForm" class="text-break">DropDownForm Class
</h1>
  <div class="markdown level0 summary"><p>Represents a drop down form of C1TrueDBGrid drop down editors.</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="https://learn.microsoft.com/dotnet/api/system.windows.forms.control">Control</a></div>
    <div class="level4"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.scrollablecontrol">ScrollableControl</a></div>
    <div class="level5"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.containercontrol">ContainerControl</a></div>
    <div class="level6"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.form">Form</a></div>
    <div class="level7"><span class="xref">DropDownForm</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.windows.forms.icontainercontrol">IContainerControl</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.imessagefilter">IMessageFilter</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.TrueDBGrid.html">C1.Win.TrueDBGrid</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.TrueDBGrid.10.dll</h6>
  <h5 id="C1_Win_TrueDBGrid_DropDownForm_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class DropDownForm : Form, IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, IContainerControl, IMessageFilter</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Class DropDownForm
    Inherits Form
    Implements IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, IContainerControl, IMessageFilter</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_TrueDBGrid_DropDownForm__ctor_C1_Win_TrueDBGrid_BaseGrid_Frame_" data-uid="C1.Win.TrueDBGrid.DropDownForm.#ctor(C1.Win.TrueDBGrid.BaseGrid.Frame)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.-ctor.html#C1_Win_TrueDBGrid_DropDownForm__ctor_C1_Win_TrueDBGrid_BaseGrid_Frame_">DropDownForm(Frame)</a>
        </td>
        <td class="markdown level1 summary"></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_TrueDBGrid_DropDownForm_CreateParams" data-uid="C1.Win.TrueDBGrid.DropDownForm.CreateParams">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.CreateParams.html#C1_Win_TrueDBGrid_DropDownForm_CreateParams">CreateParams</a>
        </td>
        <td class="markdown level1 summary"></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_TrueDBGrid_DropDownForm_CloseDropDown" data-uid="C1.Win.TrueDBGrid.DropDownForm.CloseDropDown">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.CloseDropDown.html#C1_Win_TrueDBGrid_DropDownForm_CloseDropDown">CloseDropDown()</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_CloseDropDown_System_Boolean_" data-uid="C1.Win.TrueDBGrid.DropDownForm.CloseDropDown(System.Boolean)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.CloseDropDown.html#C1_Win_TrueDBGrid_DropDownForm_CloseDropDown_System_Boolean_">CloseDropDown(bool)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_CreateHandle" data-uid="C1.Win.TrueDBGrid.DropDownForm.CreateHandle">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.CreateHandle.html#C1_Win_TrueDBGrid_DropDownForm_CreateHandle">CreateHandle()</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_Dispose_System_Boolean_" data-uid="C1.Win.TrueDBGrid.DropDownForm.Dispose(System.Boolean)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.Dispose.html#C1_Win_TrueDBGrid_DropDownForm_Dispose_System_Boolean_">Dispose(bool)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_OnActivated_System_EventArgs_" data-uid="C1.Win.TrueDBGrid.DropDownForm.OnActivated(System.EventArgs)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.OnActivated.html#C1_Win_TrueDBGrid_DropDownForm_OnActivated_System_EventArgs_">OnActivated(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_OnDeactivate_System_EventArgs_" data-uid="C1.Win.TrueDBGrid.DropDownForm.OnDeactivate(System.EventArgs)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.OnDeactivate.html#C1_Win_TrueDBGrid_DropDownForm_OnDeactivate_System_EventArgs_">OnDeactivate(EventArgs)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_PreFilterMessage_System_Windows_Forms_Message__" data-uid="C1.Win.TrueDBGrid.DropDownForm.PreFilterMessage(System.Windows.Forms.Message@)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.PreFilterMessage.html#C1_Win_TrueDBGrid_DropDownForm_PreFilterMessage_System_Windows_Forms_Message__">PreFilterMessage(ref Message)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
      <tr>
        <td id="C1_Win_TrueDBGrid_DropDownForm_WndProc_System_Windows_Forms_Message__" data-uid="C1.Win.TrueDBGrid.DropDownForm.WndProc(System.Windows.Forms.Message@)">
          <a class="xref" href="C1.Win.TrueDBGrid.DropDownForm.WndProc.html#C1_Win_TrueDBGrid_DropDownForm_WndProc_System_Windows_Forms_Message__">WndProc(ref Message)</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
  </table>

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