ToolStripDropDown Class

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

ToolStripDropDown.cs

Represents a control that allows the user to select a single item from a list that's displayed when the user clicks a ToolStripDropDownButton.

public ref class ToolStripDropDown : System::Windows::Forms::ToolStrip

public class ToolStripDropDown : System.Windows.Forms.ToolStrip

type ToolStripDropDown = class
    inherit ToolStrip

Public Class ToolStripDropDown
Inherits ToolStrip

Inheritance

Object

MarshalByRefObject

Component

Control

ScrollableControl

ToolStrip

ToolStripDropDown

Derived

System.Windows.Forms.ToolStripDropDownMenu

System.Windows.Forms.ToolStripOverflow

Examples

The following code example uses the ToolStripDropDown and ToolStripDropDownButton classes to make a three-button color picker that changes the foreground color of the form.

// Declare the drop-down button and the items it will contain.
ToolStripDropDownButton^ dropDownButton1;
ToolStripDropDown^ dropDown;
ToolStripButton^ buttonRed;
ToolStripButton^ buttonBlue;
ToolStripButton^ buttonYellow;

void InitializeDropDownButton()
{
    dropDownButton1 = gcnew ToolStripDropDownButton;
    dropDown = gcnew ToolStripDropDown;
    dropDownButton1->Text = "A";

    // Set the drop-down on the DropDownButton.
    dropDownButton1->DropDown = dropDown;

    // Declare three buttons, set their forecolor and text, 
    // and add the buttons to the drop-down.
    buttonRed = gcnew ToolStripButton;
    buttonRed->ForeColor = Color::Red;
    buttonRed->Text = "A";
    buttonBlue = gcnew ToolStripButton;
    buttonBlue->ForeColor = Color::Blue;
    buttonBlue->Text = "A";
    buttonYellow = gcnew ToolStripButton;
    buttonYellow->ForeColor = Color::Yellow;
    buttonYellow->Text = "A";
    buttonBlue->Click += gcnew EventHandler(this, 
        &Form1::colorButtonsClick);
    buttonRed->Click += gcnew EventHandler(this, 
        &Form1::colorButtonsClick);
    buttonYellow->Click += gcnew EventHandler(this, 
        &Form1::colorButtonsClick);
    array<ToolStripItem^>^ ToolStrips = 
        {buttonRed,buttonBlue,buttonYellow};
    dropDown->Items->AddRange(ToolStrips);
    toolStrip1->Items->Add(dropDownButton1);
}


// Handle the buttons' click event by setting the forecolor 
// of the form to the forecolor of the button that is clicked.
void colorButtonsClick(Object^ sender, EventArgs^ e)
{
    ToolStripButton^ senderButton = (ToolStripButton^) sender;
    this->ForeColor = senderButton->ForeColor;
}


//  internal:

// Declare the drop-down button and the items it will contain.
internal ToolStripDropDownButton dropDownButton1;
internal ToolStripDropDown dropDown;
internal ToolStripButton buttonRed;
internal ToolStripButton buttonBlue;
internal ToolStripButton buttonYellow;

private void InitializeDropDownButton()
{
    dropDownButton1 = new ToolStripDropDownButton();
    dropDown = new ToolStripDropDown();
    dropDownButton1.Text = "A";

    // Set the drop-down on the ToolStripDropDownButton.
    dropDownButton1.DropDown = dropDown;

    // Set the drop-down direction.
    dropDownButton1.DropDownDirection = ToolStripDropDownDirection.Left;

    // Do not show a drop-down arrow.
    dropDownButton1.ShowDropDownArrow = false;

    // Declare three buttons, set their foreground color and text, 
    // and add the buttons to the drop-down.
    buttonRed = new ToolStripButton();
    buttonRed.ForeColor = Color.Red;
    buttonRed.Text = "A";

    buttonBlue = new ToolStripButton();
    buttonBlue.ForeColor = Color.Blue;
    buttonBlue.Text = "A";

    buttonYellow = new ToolStripButton();
    buttonYellow.ForeColor = Color.Yellow;
    buttonYellow.Text = "A";
    
    buttonBlue.Click += new EventHandler(colorButtonsClick);
    buttonRed.Click += new EventHandler(colorButtonsClick);
    buttonYellow.Click += new EventHandler(colorButtonsClick);

    dropDown.Items.AddRange(new ToolStripItem[] 
        { buttonRed, buttonBlue, buttonYellow });
    toolStrip1.Items.Add(dropDownButton1);
}

// Handle the buttons' click event by setting the foreground color of the
// form to the foreground color of the button that is clicked.
private void colorButtonsClick(object sender, EventArgs e)
{
    ToolStripButton senderButton = (ToolStripButton)sender;
    this.ForeColor = senderButton.ForeColor;
}

' Declare the drop-down button and the items it will contain.
Friend WithEvents dropDownButton1 As ToolStripDropDownButton
Friend WithEvents dropDown As ToolStripDropDown
Friend WithEvents buttonRed As ToolStripButton
Friend WithEvents buttonBlue As ToolStripButton
Friend WithEvents buttonYellow As ToolStripButton

Private Sub InitializeDropDownButton() 
    dropDownButton1 = New ToolStripDropDownButton()
    dropDown = New ToolStripDropDown()
    dropDownButton1.Text = "A"
    
    ' Set the drop-down on the ToolStripDropDownButton.
    dropDownButton1.DropDown = dropDown

    ' Set the drop-down direction.
    dropDownButton1.DropDownDirection = ToolStripDropDownDirection.Left

    ' Do not show a drop-down arrow.
    dropDownButton1.ShowDropDownArrow = False

    ' Declare three buttons, set their foreground color and text, 
    ' and add the buttons to the drop-down.
    buttonRed = New ToolStripButton()
    buttonRed.ForeColor = Color.Red
    buttonRed.Text = "A"
    
    buttonBlue = New ToolStripButton()
    buttonBlue.ForeColor = Color.Blue
    buttonBlue.Text = "A"
    
    buttonYellow = New ToolStripButton()
    buttonYellow.ForeColor = Color.Yellow
    buttonYellow.Text = "A"
    
    dropDown.Items.AddRange(New ToolStripItem() {buttonRed, buttonBlue, buttonYellow})
    toolStrip1.Items.Add(dropDownButton1)
End Sub

' Handle the buttons' click event by setting the foreground color of the
' form to the foreground color of the button that is clicked.
Public Sub colorButtonsClick(ByVal sender As [Object], ByVal e As EventArgs) _
    Handles buttonRed.Click, buttonBlue.Click, buttonYellow.Click
    Dim senderButton As ToolStripButton = CType(sender, ToolStripButton)
    Me.ForeColor = senderButton.ForeColor

End Sub

The following code example uses ToolStripControlHost to show a ToolStripDropDown as a TreeView.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form
{
    public Form1()
    {
        MyTreeViewCombo treeCombo = new MyTreeViewCombo();
        treeCombo.TreeView.Nodes.Add("one");
        treeCombo.TreeView.Nodes.Add("two");
        treeCombo.TreeView.Nodes.Add("three");
        this.Controls.Add(treeCombo);
    }
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }

    public class MyTreeViewCombo : ComboBox
    {   
        ToolStripControlHost treeViewHost;
        ToolStripDropDown dropDown;
        public MyTreeViewCombo()
        {
            TreeView treeView = new TreeView();
            treeView.BorderStyle = BorderStyle.None;
            treeViewHost = new ToolStripControlHost(treeView);
            dropDown = new ToolStripDropDown();
            dropDown.Items.Add(treeViewHost);
        }

        public TreeView TreeView
        {
            get { return treeViewHost.Control as TreeView; }
        }

        private void ShowDropDown()
        {
            if (dropDown != null)
            {
                treeViewHost.Width = DropDownWidth;
                treeViewHost.Height = DropDownHeight;
                dropDown.Show(this, 0, this.Height);
            }
        }

        private const int WM_USER = 0x0400,
                          WM_REFLECT = WM_USER + 0x1C00,
                          WM_COMMAND = 0x0111,
                          CBN_DROPDOWN = 7;

        public static int HIWORD(int n)
        {
            return (n >> 16) & 0xffff;
        }

        protected override void WndProc(ref Message m)
        {
            if (m.Msg == (WM_REFLECT + WM_COMMAND))
            {
                if (HIWORD((int)m.WParam) == CBN_DROPDOWN)
                {
                    ShowDropDown();
                    return;
                }
            }
            base.WndProc(ref m);
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (dropDown != null)
                {
                    dropDown.Dispose();
                    dropDown = null;
                }
            }
            base.Dispose(disposing);
        }
    }
}

Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms
Imports System.Security.Permissions

Public Class Form1
   Inherits Form
   
   Public Sub New()
      Dim treeCombo As New MyTreeViewCombo()
        treeCombo.MyTreeView.Nodes.Add("one")
        treeCombo.MyTreeView.Nodes.Add("two")
        treeCombo.MyTreeView.Nodes.Add("three")
      Me.Controls.Add(treeCombo)
   End Sub
   
   <STAThread()>  _
   Shared Sub Main()
      Application.EnableVisualStyles()
      Application.SetCompatibleTextRenderingDefault(False)
      Application.Run(New Form1())
   End Sub

    <SecurityPermissionAttribute( _
         SecurityAction.LinkDemand, Flags:=SecurityPermissionFlag.UnmanagedCode)> _
   Public Class MyTreeViewCombo
        Inherits ComboBox

        Private treeViewHost As ToolStripControlHost
        Private Shadows dropDown As ToolStripDropDown

        Public Sub New()

            Dim treeView As New TreeView()
            treeView.BorderStyle = BorderStyle.None
            treeViewHost = New ToolStripControlHost(treeView)
            dropDown = New ToolStripDropDown()
            dropDown.Items.Add(treeViewHost)
        End Sub

        Public ReadOnly Property MyTreeView() As TreeView
            Get
                Return treeViewHost.Control '
            End Get
        End Property

        Private Sub ShowDropDown()
            If Not (dropDown Is Nothing) Then
                treeViewHost.Width = DropDownWidth
                treeViewHost.Height = DropDownHeight
                dropDown.Show(Me, 0, Me.Height)
            End If
        End Sub

        Private Const WM_USER As Integer = &H400
        Private Const WM_REFLECT As Integer = WM_USER + &H1C00
        Private Const WM_COMMAND As Integer = &H111
        Private Const CBN_DROPDOWN As Integer = 7

        Public Shared Function HIWORD(ByVal n As Integer) As Integer
            Return (n >> 16) And &HFFFF
        End Function

        Protected Overrides Sub WndProc(ByRef m As Message)
            If m.Msg = WM_REFLECT + WM_COMMAND Then
                If HIWORD(CType(m.WParam, Integer)) = CBN_DROPDOWN Then
                    ShowDropDown()
                    Return
                End If
            End If
            MyBase.WndProc(m)
        End Sub

        Protected Overrides Sub Dispose(ByVal disposing As Boolean)
            If disposing Then
                If Not (dropDown Is Nothing) Then
                    dropDown.Dispose()
                    dropDown = Nothing
                End If
            End If
            MyBase.Dispose(disposing)
        End Sub
    End Class
End Class

Remarks

Use the ToolStripDropDown to display drop-down lists of options, such as a color picker.

ToolStripDropDownMenu and ToolStripDropDown replace and extend the Menu control, which was removed in .NET Core 3.1.

Constructors

ToolStripDropDown()

Initializes a new instance of the ToolStripDropDown class.

Fields

ScrollStateAutoScrolling	Determines the value of the AutoScroll property. (Inherited from ScrollableControl)
ScrollStateFullDrag	Determines whether the user has enabled full window drag. (Inherited from ScrollableControl)
ScrollStateHScrollVisible	Determines whether the value of the HScroll property is set to true. (Inherited from ScrollableControl)
ScrollStateUserHasScrolled	Determines whether the user had scrolled through the ScrollableControl control. (Inherited from ScrollableControl)
ScrollStateVScrollVisible	Determines whether the value of the VScroll property is set to true. (Inherited from ScrollableControl)

Properties

AccessibilityObject	Gets the AccessibleObject assigned to the control. (Inherited from Control)
AccessibleDefaultActionDescription	Gets or sets the default action description of the control for use by accessibility client applications. (Inherited from Control)
AccessibleDescription	Gets or sets the description of the control used by accessibility client applications. (Inherited from Control)
AccessibleName	Gets or sets the name of the control used by accessibility client applications. (Inherited from Control)
AccessibleRole	Gets or sets the accessible role of the control. (Inherited from Control)
AllowClickThrough	Gets or sets a value indicating whether the control to be interacted when window does not have focus. (Inherited from ToolStrip)
AllowDrop	Gets or sets a value indicating whether drag-and-drop and item reordering are handled through events that you implement. (Inherited from ToolStrip)
AllowItemReorder	This property is not relevant to this class.
AllowMerge	Gets or sets a value indicating whether multiple MenuStrip, ToolStripDropDownMenu, ToolStripMenuItem, and other types can be combined. (Inherited from ToolStrip)
AllowTransparency	Gets or sets a value indicating whether the Opacity of the form can be adjusted.
Anchor	This property is not relevant to this class.
AutoClose	Gets or sets a value indicating whether the ToolStripDropDown control should automatically close when it has lost activation.
AutoScroll	This property is not relevant for this class. (Inherited from ToolStrip)
AutoScrollMargin	This property is not relevant for this class. (Inherited from ToolStrip)
AutoScrollMinSize	This property is not relevant for this class. (Inherited from ToolStrip)
AutoScrollOffset	Gets or sets where this control is scrolled to in ScrollControlIntoView(Control). (Inherited from Control)
AutoScrollPosition	This property is not relevant for this class. (Inherited from ToolStrip)
AutoSize	Gets or sets a value indicating whether the ToolStripDropDown automatically adjusts its size when the form is resized.
BackColor	Gets or sets the background color for the ToolStrip. (Inherited from ToolStrip)
BackgroundImage	Gets or sets the background image displayed in the control. (Inherited from Control)
BackgroundImageLayout	Gets or sets the background image layout as defined in the ImageLayout enumeration. (Inherited from Control)
BindingContext	Gets or sets the binding context for the ToolStrip. (Inherited from ToolStrip)
Bottom	Gets the distance, in pixels, between the bottom edge of the control and the top edge of its container's client area. (Inherited from Control)
Bounds	Gets or sets the size and location of the control including its nonclient elements, in pixels, relative to the parent control. (Inherited from Control)
CanEnableIme	Gets a value indicating whether the ImeMode property can be set to an active value, to enable IME support. (Inherited from Control)
CanFocus	Gets a value indicating whether the control can receive focus. (Inherited from Control)
CanOverflow	Gets or sets a value indicating whether the items in a ToolStripDropDown can be sent to an overflow menu.
CanRaiseEvents	Determines if events can be raised on the control. (Inherited from Control)
CanSelect	Gets a value indicating whether the control can be selected. (Inherited from Control)
Capture	Gets or sets a value indicating whether the control has captured the mouse. (Inherited from Control)
CausesValidation	Gets or sets a value indicating whether the ToolStrip causes validation to be performed on any controls that require validation when it receives focus. (Inherited from ToolStrip)
ClientRectangle	Gets the rectangle that represents the client area of the control. (Inherited from Control)
ClientSize	Gets or sets the height and width of the client area of the control. (Inherited from Control)
CompanyName	Gets the name of the company or creator of the application containing the control. (Inherited from Control)
Container	Gets the IContainer that contains the Component. (Inherited from Component)
ContainsFocus	Gets a value indicating whether the control, or one of its child controls, currently has the input focus. (Inherited from Control)
ContextMenu	Gets or sets the shortcut menu associated with the control. (Inherited from Control)
ContextMenuStrip	This property is not relevant to this class.
Controls	This property is not relevant for this class. (Inherited from ToolStrip)
Created	Gets a value indicating whether the control has been created. (Inherited from Control)
CreateParams	Gets parameters of a new window.
Cursor	Gets or sets the cursor that is displayed when the mouse pointer is over the ToolStrip. (Inherited from ToolStrip)
DataBindings	Gets the data bindings for the control. (Inherited from Control)
DataContext	Gets or sets the data context for the purpose of data binding. This is an ambient property. (Inherited from Control)
DefaultCursor	Gets or sets the default cursor for the control. (Inherited from Control)
DefaultDock	Gets the docking location of the ToolStrip, indicating which borders are docked to the container.
DefaultDropDownDirection	Gets or sets the direction in which the ToolStripDropDown is displayed relative to the ToolStrip.
DefaultGripMargin	Gets the default spacing, in pixels, between the sizing grip and the edges of the ToolStrip. (Inherited from ToolStrip)
DefaultImeMode	Gets the default Input Method Editor (IME) mode supported by the control. (Inherited from Control)
DefaultMargin	Gets the spacing, in pixels, between the ToolStrip and the ToolStripContainer. (Inherited from ToolStrip)
DefaultMaximumSize	Gets the length and height, in pixels, that is specified as the default maximum size of a control. (Inherited from Control)
DefaultMinimumSize	Gets the length and height, in pixels, that is specified as the default minimum size of a control. (Inherited from Control)
DefaultPadding	Gets the internal spacing, in pixels, of the contents of a ToolStrip.
DefaultShowItemToolTips	Gets a value indicating whether ToolTips are shown for the ToolStripDropDown by default.
DefaultSize	Gets the default size of the ToolStrip. (Inherited from ToolStrip)
DesignMode	Gets a value that indicates whether the Component is currently in design mode. (Inherited from Component)
DeviceDpi	Gets the DPI value for the display device where the control is currently being displayed. (Inherited from Control)
DisplayedItems	Gets the subset of items that are currently displayed on the ToolStrip, including items that are automatically added into the ToolStrip. (Inherited from ToolStrip)
DisplayRectangle	Retrieves the current display rectangle. (Inherited from ToolStrip)
Disposing	Gets a value indicating whether the base Control class is in the process of disposing. (Inherited from Control)
Dock	This property is not relevant to this class.
DockPadding	Gets the dock padding settings for all edges of the control. (Inherited from ScrollableControl)
DoubleBuffered	Gets or sets a value indicating whether this control should redraw its surface using a secondary buffer to reduce or prevent flicker. (Inherited from Control)
DropShadowEnabled	Gets or sets a value indicating whether a three-dimensional shadow effect appears when the ToolStripDropDown is displayed.
Enabled	Gets or sets a value indicating whether the control can respond to user interaction. (Inherited from Control)
Events	Gets the list of event handlers that are attached to this Component. (Inherited from Component)
Focused	Gets a value indicating whether the control has input focus. (Inherited from Control)
Font	Gets or sets the font of the text displayed on the ToolStripDropDown.
FontHeight	Gets or sets the height of the font of the control. (Inherited from Control)
ForeColor	Gets or sets the foreground color of the ToolStrip. (Inherited from ToolStrip)
GripDisplayStyle	This property is not relevant to this class.
GripMargin	This property is not relevant to this class.
GripRectangle	This property is not relevant to this class.
GripStyle	This property is not relevant to this class.
Handle	Gets the window handle that the control is bound to. (Inherited from Control)
HasChildren	This property is not relevant for this class. (Inherited from ToolStrip)
Height	Gets or sets the height of the control. (Inherited from Control)
HorizontalScroll	This property is not relevant for this class. (Inherited from ToolStrip)
HScroll	Gets or sets a value indicating whether the horizontal scroll bar is visible. (Inherited from ScrollableControl)
ImageList	Gets or sets the image list that contains the image displayed on a ToolStrip item. (Inherited from ToolStrip)
ImageScalingSize	Gets or sets the size, in pixels, of an image used on a ToolStrip. (Inherited from ToolStrip)
ImeMode	Gets or sets the Input Method Editor (IME) mode of the control. (Inherited from Control)
ImeModeBase	Gets or sets the IME mode of a control. (Inherited from Control)
InvokeRequired	Gets a value indicating whether the caller must call an invoke method when making method calls to the control because the caller is on a different thread than the one the control was created on. (Inherited from Control)
IsAccessible	Gets or sets a value indicating whether the control is visible to accessibility applications. (Inherited from Control)
IsAncestorSiteInDesignMode	Indicates if one of the Ancestors of this control is sited and that site in DesignMode. This property is read-only. (Inherited from Control)
IsAutoGenerated	Gets a value indicating whether this ToolStripDropDown was automatically generated.
IsCurrentlyDragging	Gets a value indicating whether the user is currently moving the ToolStrip from one ToolStripContainer to another. (Inherited from ToolStrip)
IsDisposed	Gets a value indicating whether the control has been disposed of. (Inherited from Control)
IsDropDown	Gets a value indicating whether a ToolStrip is a ToolStripDropDown control. (Inherited from ToolStrip)
IsHandleCreated	Gets a value indicating whether the control has a handle associated with it. (Inherited from Control)
IsMirrored	Gets a value indicating whether the control is mirrored. (Inherited from Control)
Items	Gets all the items that belong to a ToolStrip. (Inherited from ToolStrip)
LayoutEngine	Passes a reference to the cached LayoutEngine returned by the layout engine interface. (Inherited from ToolStrip)
LayoutSettings	Gets or sets layout scheme characteristics. (Inherited from ToolStrip)
LayoutStyle	Gets or sets a value indicating how the ToolStrip lays out the items collection. (Inherited from ToolStrip)
Left	Gets or sets the distance, in pixels, between the left edge of the control and the left edge of its container's client area. (Inherited from Control)
Location	This property is not relevant to this class.
Margin	Gets or sets the space between controls. (Inherited from Control)
MaximumSize	Gets or sets the size that is the upper limit that GetPreferredSize(Size) can specify. (Inherited from Control)
MaxItemSize	Gets the maximum height and width, in pixels, of the ToolStripDropDown.
MinimumSize	Gets or sets the size that is the lower limit that GetPreferredSize(Size) can specify. (Inherited from Control)
Name	Gets or sets the name of the control. (Inherited from Control)
Opacity	Determines the opacity of the form.
Orientation	Gets the orientation of the ToolStripPanel. (Inherited from ToolStrip)
OverflowButton	This property is not relevant to this class.
OwnerItem	Gets or sets the ToolStripItem that is the owner of this ToolStripDropDown.
Padding	Gets or sets padding within the control. (Inherited from Control)
Parent	Gets or sets the parent container of the control. (Inherited from Control)
PreferredSize	Gets the size of a rectangular area into which the control can fit. (Inherited from Control)
ProductName	Gets the product name of the assembly containing the control. (Inherited from Control)
ProductVersion	Gets the version of the assembly containing the control. (Inherited from Control)
RecreatingHandle	Gets a value indicating whether the control is currently re-creating its handle. (Inherited from Control)
Region	Gets or sets the window region associated with the ToolStripDropDown.
Renderer	Gets or sets a ToolStripRenderer used to customize the look and feel of a ToolStrip. (Inherited from ToolStrip)
RenderMode	Gets or sets a value that indicates which visual styles will be applied to the ToolStrip. (Inherited from ToolStrip)
RenderRightToLeft	Obsolete. This property is now obsolete. (Inherited from Control)
ResizeRedraw	Gets or sets a value indicating whether the control redraws itself when resized. (Inherited from Control)
Right	Gets the distance, in pixels, between the right edge of the control and the left edge of its container's client area. (Inherited from Control)
RightToLeft	Gets or sets a value indicating whether control's elements are aligned to support locales using right-to-left fonts.
ScaleChildren	Gets a value that determines the scaling of child controls. (Inherited from Control)
ShowFocusCues	Gets a value indicating whether the control should display focus rectangles. (Inherited from Control)
ShowItemToolTips	Gets or sets a value indicating whether ToolTips are to be displayed on ToolStrip items. (Inherited from ToolStrip)
ShowKeyboardCues	Gets a value indicating whether the user interface is in the appropriate state to show or hide keyboard accelerators. (Inherited from Control)
Site	Gets or sets the site of the control. (Inherited from Control)
Size	Gets or sets the height and width of the control. (Inherited from Control)
Stretch	This property is not relevant to this class.
TabIndex	This property is not relevant to this class.
TabStop	Gets or sets a value indicating whether the user can give the focus to an item in the ToolStrip using the TAB key. (Inherited from ToolStrip)
Tag	Gets or sets the object that contains data about the control. (Inherited from Control)
Text	Gets or sets the text associated with this control. (Inherited from Control)
TextDirection	Specifies the direction in which to draw the text on the item.
Top	Gets or sets the distance, in pixels, between the top edge of the control and the top edge of its container's client area. (Inherited from Control)
TopLevel	Gets or sets a value indicating whether the ToolStripDropDown is a top-level control.
TopLevelControl	Gets the parent control that is not parented by another Windows Forms control. Typically, this is the outermost Form that the control is contained in. (Inherited from Control)
TopMost	Gets or sets a value indicating whether the form should be displayed as a topmost form.
UseWaitCursor	Gets or sets a value indicating whether to use the wait cursor for the current control and all child controls. (Inherited from Control)
VerticalScroll	This property is not relevant for this class. (Inherited from ToolStrip)
Visible	Gets or sets a value indicating whether the ToolStripDropDown is visible or hidden.
VScroll	Gets or sets a value indicating whether the vertical scroll bar is visible. (Inherited from ScrollableControl)
Width	Gets or sets the width of the control. (Inherited from Control)
WindowTarget	This property is not relevant for this class. (Inherited from Control)

Methods

AccessibilityNotifyClients(AccessibleEvents, Int32, Int32)	Notifies the accessibility client applications of the specified AccessibleEvents for the specified child control . (Inherited from Control)
AccessibilityNotifyClients(AccessibleEvents, Int32)	Notifies the accessibility client applications of the specified AccessibleEvents for the specified child control. (Inherited from Control)
AdjustFormScrollbars(Boolean)	Adjusts the scroll bars on the container based on the current control positions and the control currently selected. (Inherited from ScrollableControl)
BeginInvoke(Action)	Executes the specified delegate asynchronously on the thread that the control's underlying handle was created on. (Inherited from Control)
BeginInvoke(Delegate, Object[])	Executes the specified delegate asynchronously with the specified arguments, on the thread that the control's underlying handle was created on. (Inherited from Control)
BeginInvoke(Delegate)	Executes the specified delegate asynchronously on the thread that the control's underlying handle was created on. (Inherited from Control)
BringToFront()	Brings the control to the front of the z-order. (Inherited from Control)
Close()	Closes the ToolStripDropDown control.
Close(ToolStripDropDownCloseReason)	Closes the ToolStripDropDown control for the specified reason.
Contains(Control)	Retrieves a value indicating whether the specified control is a child of the control. (Inherited from Control)
CreateAccessibilityInstance()	Creates a new accessibility object for the ToolStripDropDown.
CreateControl()	Forces the creation of the visible control, including the creation of the handle and any visible child controls. (Inherited from Control)
CreateControlsInstance()	Creates a new instance of the control collection for the control. (Inherited from ToolStrip)
CreateDefaultItem(String, Image, EventHandler)	Creates a default ToolStripItem with the specified text, image, and event handler on a new ToolStrip instance. (Inherited from ToolStrip)
CreateGraphics()	Creates the Graphics for the control. (Inherited from Control)
CreateHandle()	Creates a handle for the control.
CreateLayoutSettings(ToolStripLayoutStyle)	Applies various layout options to the ToolStripDropDown.
CreateObjRef(Type)	Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject)
DefWndProc(Message)	Sends the specified message to the default window procedure. (Inherited from Control)
DestroyHandle()	Destroys the handle associated with the control. (Inherited from Control)
Dispose()	Releases all resources used by the Component. (Inherited from Component)
Dispose(Boolean)	Releases the unmanaged resources used by the ToolStripDropDown and optionally releases the managed resources.
DoDragDrop(Object, DragDropEffects, Bitmap, Point, Boolean)	Begins a drag operation. (Inherited from Control)
DoDragDrop(Object, DragDropEffects)	Begins a drag-and-drop operation. (Inherited from Control)
DrawToBitmap(Bitmap, Rectangle)	Supports rendering to the specified bitmap. (Inherited from Control)
EndInvoke(IAsyncResult)	Retrieves the return value of the asynchronous operation represented by the IAsyncResult passed. (Inherited from Control)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
FindForm()	Retrieves the form that the control is on. (Inherited from Control)
Focus()	Sets input focus to the control. (Inherited from Control)
GetAccessibilityObjectById(Int32)	Retrieves the specified AccessibleObject. (Inherited from Control)
GetAutoSizeMode()	Retrieves a value indicating how a control will behave when its AutoSize property is enabled. (Inherited from Control)
GetChildAtPoint(Point, GetChildAtPointSkip)	This method is not relevant for this class. (Inherited from ToolStrip)
GetChildAtPoint(Point)	This method is not relevant for this class. (Inherited from ToolStrip)
GetContainerControl()	Returns the next ContainerControl up the control's chain of parent controls. (Inherited from Control)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetItemAt(Int32, Int32)	Returns the item located at the specified x- and y-coordinates of the ToolStrip client area. (Inherited from ToolStrip)
GetItemAt(Point)	Returns the item located at the specified point in the client area of the ToolStrip. (Inherited from ToolStrip)
GetLifetimeService()	Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject)
GetNextControl(Control, Boolean)	Retrieves the next control forward or back in the tab order of child controls. (Inherited from Control)
GetNextItem(ToolStripItem, ArrowDirection)	Retrieves the next ToolStripItem from the specified reference point and moving in the specified direction. (Inherited from ToolStrip)
GetPreferredSize(Size)	Retrieves the size of a rectangular area into which a control can be fitted. (Inherited from Control)
GetScaledBounds(Rectangle, SizeF, BoundsSpecified)	Retrieves the bounds within which the control is scaled. (Inherited from Control)
GetScrollState(Int32)	Determines whether the specified flag has been set. (Inherited from ScrollableControl)
GetService(Type)	Returns an object that represents a service provided by the Component or by its Container. (Inherited from Component)
GetStyle(ControlStyles)	Retrieves the value of the specified control style bit for the control. (Inherited from Control)
GetTopLevel()	Determines if the control is a top-level control. (Inherited from Control)
GetType()	Gets the Type of the current instance. (Inherited from Object)
Hide()	Conceals the control from the user. (Inherited from Control)
InitializeLifetimeService()	Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject)
InitLayout()	Called after the control has been added to another container. (Inherited from Control)
Invalidate()	Invalidates the entire surface of the control and causes the control to be redrawn. (Inherited from Control)
Invalidate(Boolean)	Invalidates a specific region of the control and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control. (Inherited from Control)
Invalidate(Rectangle, Boolean)	Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control. (Inherited from Control)
Invalidate(Rectangle)	Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. (Inherited from Control)
Invalidate(Region, Boolean)	Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control. (Inherited from Control)
Invalidate(Region)	Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. (Inherited from Control)
Invoke(Action)	Executes the specified delegate on the thread that owns the control's underlying window handle. (Inherited from Control)
Invoke(Delegate, Object[])	Executes the specified delegate, on the thread that owns the control's underlying window handle, with the specified list of arguments. (Inherited from Control)
Invoke(Delegate)	Executes the specified delegate on the thread that owns the control's underlying window handle. (Inherited from Control)
Invoke<T>(Func<T>)	Executes the specified delegate on the thread that owns the control's underlying window handle. (Inherited from Control)
InvokeAsync(Action, CancellationToken)	Invokes the specified synchronous callback asynchronously on the thread that owns the control's handle. (Inherited from Control)
InvokeAsync(Func<CancellationToken,ValueTask>, CancellationToken)	Executes the specified asynchronous callback on the thread that owns the control's handle asynchronously. (Inherited from Control)
InvokeAsync<T>(Func<CancellationToken,ValueTask<T>>, CancellationToken)	Executes the specified asynchronous callback on the thread that owns the control's handle. (Inherited from Control)
InvokeAsync<T>(Func<T>, CancellationToken)	Invokes the specified synchronous callback asynchronously on the thread that owns the control's handle. (Inherited from Control)
InvokeGotFocus(Control, EventArgs)	Raises the GotFocus event for the specified control. (Inherited from Control)
InvokeLostFocus(Control, EventArgs)	Raises the LostFocus event for the specified control. (Inherited from Control)
InvokeOnClick(Control, EventArgs)	Raises the Click event for the specified control. (Inherited from Control)
InvokePaint(Control, PaintEventArgs)	Raises the Paint event for the specified control. (Inherited from Control)
InvokePaintBackground(Control, PaintEventArgs)	Raises the PaintBackground event for the specified control. (Inherited from Control)
IsInputChar(Char)	Determines whether a character is an input character that the item recognizes. (Inherited from ToolStrip)
IsInputKey(Keys)	Determines whether the specified key is a regular input key or a special key that requires preprocessing. (Inherited from ToolStrip)
LogicalToDeviceUnits(Int32)	Converts a Logical DPI value to its equivalent DeviceUnit DPI value. (Inherited from Control)
LogicalToDeviceUnits(Size)	Transforms a size from logical to device units by scaling it for the current DPI and rounding down to the nearest integer value for width and height. (Inherited from Control)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
MemberwiseClone(Boolean)	Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject)
NotifyInvalidate(Rectangle)	Raises the Invalidated event with a specified region of the control to invalidate. (Inherited from Control)
OnAutoSizeChanged(EventArgs)	Raises the AutoSizeChanged event. (Inherited from Control)
OnBackColorChanged(EventArgs)	Raises the BackColorChanged event. (Inherited from Control)
OnBackgroundImageChanged(EventArgs)	Raises the BackgroundImageChanged event. (Inherited from Control)
OnBackgroundImageLayoutChanged(EventArgs)	Raises the BackgroundImageLayoutChanged event. (Inherited from Control)
OnBeginDrag(EventArgs)	Raises the BeginDrag event. (Inherited from ToolStrip)
OnBindingContextChanged(EventArgs)	Raises the BindingContextChanged event. (Inherited from Control)
OnCausesValidationChanged(EventArgs)	Raises the CausesValidationChanged event. (Inherited from Control)
OnChangeUICues(UICuesEventArgs)	Raises the ChangeUICues event. (Inherited from Control)
OnClick(EventArgs)	Raises the Click event. (Inherited from Control)
OnClientSizeChanged(EventArgs)	Raises the ClientSizeChanged event. (Inherited from Control)
OnClosed(ToolStripDropDownClosedEventArgs)	Raises the Closed event.
OnClosing(ToolStripDropDownClosingEventArgs)	Raises the Closing event.
OnContextMenuChanged(EventArgs)	Raises the ContextMenuChanged event. (Inherited from Control)
OnContextMenuStripChanged(EventArgs)	Raises the ContextMenuStripChanged event. (Inherited from Control)
OnControlAdded(ControlEventArgs)	Raises the ControlAdded event. (Inherited from Control)
OnControlRemoved(ControlEventArgs)	Raises the ControlRemoved event. (Inherited from Control)
OnCreateControl()	Raises the CreateControl() method. (Inherited from Control)
OnCursorChanged(EventArgs)	Raises the CursorChanged event. (Inherited from Control)
OnDataContextChanged(EventArgs)	(Inherited from Control)
OnDockChanged(EventArgs)	Raises the DockChanged event. (Inherited from ToolStrip)
OnDoubleClick(EventArgs)	Raises the DoubleClick event. (Inherited from Control)
OnDpiChangedAfterParent(EventArgs)	Raises the DpiChangedAfterParent event. (Inherited from Control)
OnDpiChangedBeforeParent(EventArgs)	Raises the DpiChangedBeforeParent event. (Inherited from Control)
OnDragDrop(DragEventArgs)	Raises the DragDrop event. (Inherited from Control)
OnDragEnter(DragEventArgs)	Raises the DragEnter event. (Inherited from Control)
OnDragLeave(EventArgs)	Raises the DragLeave event. (Inherited from Control)
OnDragOver(DragEventArgs)	Raises the DragOver event. (Inherited from Control)
OnEnabledChanged(EventArgs)	Raises the Enabled event. (Inherited from ToolStrip)
OnEndDrag(EventArgs)	Raises the EndDrag event. (Inherited from ToolStrip)
OnEnter(EventArgs)	Raises the Enter event. (Inherited from Control)
OnFontChanged(EventArgs)	Raises the FontChanged event. (Inherited from ToolStrip)
OnForeColorChanged(EventArgs)	Raises the ForeColorChanged event. (Inherited from Control)
OnGiveFeedback(GiveFeedbackEventArgs)	Raises the GiveFeedback event. (Inherited from Control)
OnGotFocus(EventArgs)	Raises the GotFocus event. (Inherited from Control)
OnHandleCreated(EventArgs)	Raises the HandleCreated event.
OnHandleDestroyed(EventArgs)	Raises the HandleDestroyed event. (Inherited from ToolStrip)
OnHelpRequested(HelpEventArgs)	Raises the HelpRequested event. (Inherited from Control)
OnImeModeChanged(EventArgs)	Raises the ImeModeChanged event. (Inherited from Control)
OnInvalidated(InvalidateEventArgs)	Raises the Invalidated event. (Inherited from ToolStrip)
OnItemAdded(ToolStripItemEventArgs)	Raises the ItemAdded event. (Inherited from ToolStrip)
OnItemClicked(ToolStripItemClickedEventArgs)	Raises the ItemClicked event.
OnItemRemoved(ToolStripItemEventArgs)	Raises the ItemRemoved event. (Inherited from ToolStrip)
OnKeyDown(KeyEventArgs)	Raises the KeyDown event. (Inherited from Control)
OnKeyPress(KeyPressEventArgs)	Raises the KeyPress event. (Inherited from Control)
OnKeyUp(KeyEventArgs)	Raises the KeyUp event. (Inherited from Control)
OnLayout(LayoutEventArgs)	Raises the Layout event.
OnLayoutCompleted(EventArgs)	Raises the LayoutCompleted event. (Inherited from ToolStrip)
OnLayoutStyleChanged(EventArgs)	Raises the LayoutStyleChanged event. (Inherited from ToolStrip)
OnLeave(EventArgs)	Raises the Leave event. (Inherited from ToolStrip)
OnLocationChanged(EventArgs)	Raises the LocationChanged event. (Inherited from Control)
OnLostFocus(EventArgs)	Raises the LostFocus event. (Inherited from ToolStrip)
OnMarginChanged(EventArgs)	Raises the MarginChanged event. (Inherited from Control)
OnMouseCaptureChanged(EventArgs)	Raises the MouseCaptureChanged event. (Inherited from ToolStrip)
OnMouseClick(MouseEventArgs)	Raises the MouseClick event. (Inherited from Control)
OnMouseDoubleClick(MouseEventArgs)	Raises the MouseDoubleClick event. (Inherited from Control)
OnMouseDown(MouseEventArgs)	Raises the MouseDown event. (Inherited from ToolStrip)
OnMouseEnter(EventArgs)	Raises the MouseEnter event. (Inherited from Control)
OnMouseHover(EventArgs)	Raises the MouseHover event. (Inherited from Control)
OnMouseLeave(EventArgs)	Raises the MouseLeave event. (Inherited from ToolStrip)
OnMouseMove(MouseEventArgs)	Raises the MouseMove event. (Inherited from ToolStrip)
OnMouseUp(MouseEventArgs)	Raises the MouseUp event.
OnMouseWheel(MouseEventArgs)	Raises the MouseWheel event. (Inherited from ScrollableControl)
OnMove(EventArgs)	Raises the Move event. (Inherited from Control)
OnNotifyMessage(Message)	Notifies the control of Windows messages. (Inherited from Control)
OnOpened(EventArgs)	Raises the Opened event.
OnOpening(CancelEventArgs)	Raises the Opening event.
OnPaddingChanged(EventArgs)	Raises the PaddingChanged event. (Inherited from ScrollableControl)
OnPaint(PaintEventArgs)	Raises the Paint event. (Inherited from ToolStrip)
OnPaintBackground(PaintEventArgs)	Raises the Paint event for the ToolStrip background. (Inherited from ToolStrip)
OnPaintGrip(PaintEventArgs)	Raises the PaintGrip event. (Inherited from ToolStrip)
OnParentBackColorChanged(EventArgs)	Raises the BackColorChanged event when the BackColor property value of the control's container changes. (Inherited from Control)
OnParentBackgroundImageChanged(EventArgs)	Raises the BackgroundImageChanged event when the BackgroundImage property value of the control's container changes. (Inherited from Control)
OnParentBindingContextChanged(EventArgs)	Raises the BindingContextChanged event when the BindingContext property value of the control's container changes. (Inherited from Control)
OnParentChanged(EventArgs)	Raises the ParentChanged event.
OnParentCursorChanged(EventArgs)	Raises the CursorChanged event. (Inherited from Control)
OnParentDataContextChanged(EventArgs)	(Inherited from Control)
OnParentEnabledChanged(EventArgs)	Raises the EnabledChanged event when the Enabled property value of the control's container changes. (Inherited from Control)
OnParentFontChanged(EventArgs)	Raises the FontChanged event when the Font property value of the control's container changes. (Inherited from Control)
OnParentForeColorChanged(EventArgs)	Raises the ForeColorChanged event when the ForeColor property value of the control's container changes. (Inherited from Control)
OnParentRightToLeftChanged(EventArgs)	Raises the RightToLeftChanged event when the RightToLeft property value of the control's container changes. (Inherited from Control)
OnParentVisibleChanged(EventArgs)	Raises the VisibleChanged event when the Visible property value of the control's container changes. (Inherited from Control)
OnPreviewKeyDown(PreviewKeyDownEventArgs)	Raises the PreviewKeyDown event. (Inherited from Control)
OnPrint(PaintEventArgs)	Raises the Paint event. (Inherited from Control)
OnQueryContinueDrag(QueryContinueDragEventArgs)	Raises the QueryContinueDrag event. (Inherited from Control)
OnRegionChanged(EventArgs)	Raises the RegionChanged event. (Inherited from Control)
OnRendererChanged(EventArgs)	Raises the RendererChanged event. (Inherited from ToolStrip)
OnResize(EventArgs)	Raises the Resize event. (Inherited from Control)
OnRightToLeftChanged(EventArgs)	Raises the RightToLeftChanged event. (Inherited from ToolStrip)
OnScroll(ScrollEventArgs)	Raises the Scroll event. (Inherited from ToolStrip)
OnSizeChanged(EventArgs)	Raises the SizeChanged event. (Inherited from Control)
OnStyleChanged(EventArgs)	Raises the StyleChanged event. (Inherited from Control)
OnSystemColorsChanged(EventArgs)	Raises the SystemColorsChanged event. (Inherited from Control)
OnTabIndexChanged(EventArgs)	Raises the TabIndexChanged event. (Inherited from Control)
OnTabStopChanged(EventArgs)	Raises the TabStopChanged event. (Inherited from ToolStrip)
OnTextChanged(EventArgs)	Raises the TextChanged event. (Inherited from Control)
OnValidated(EventArgs)	Raises the Validated event. (Inherited from Control)
OnValidating(CancelEventArgs)	Raises the Validating event. (Inherited from Control)
OnVisibleChanged(EventArgs)	Raises the VisibleChanged event.
PerformLayout()	Forces the control to apply layout logic to all its child controls. (Inherited from Control)
PerformLayout(Control, String)	Forces the control to apply layout logic to all its child controls. (Inherited from Control)
PointToClient(Point)	Computes the location of the specified screen point into client coordinates. (Inherited from Control)
PointToScreen(Point)	Computes the location of the specified client point into screen coordinates. (Inherited from Control)
PreProcessControlMessage(Message)	Preprocesses keyboard or input messages within the message loop before they are dispatched. (Inherited from Control)
PreProcessMessage(Message)	Preprocesses keyboard or input messages within the message loop before they are dispatched. (Inherited from Control)
ProcessCmdKey(Message, Keys)	Processes a command key. (Inherited from ToolStrip)
ProcessDialogChar(Char)	Processes a dialog box character.
ProcessDialogKey(Keys)	Processes a dialog box key.
ProcessKeyEventArgs(Message)	Processes a key message and generates the appropriate control events. (Inherited from Control)
ProcessKeyMessage(Message)	Processes a keyboard message. (Inherited from Control)
ProcessKeyPreview(Message)	Previews a keyboard message. (Inherited from Control)
ProcessMnemonic(Char)	Processes a mnemonic character.
RaiseDragEvent(Object, DragEventArgs)	Raises the appropriate drag event. (Inherited from Control)
RaiseKeyEvent(Object, KeyEventArgs)	Raises the appropriate key event. (Inherited from Control)
RaiseMouseEvent(Object, MouseEventArgs)	Raises the appropriate mouse event. (Inherited from Control)
RaisePaintEvent(Object, PaintEventArgs)	Raises the appropriate paint event. (Inherited from Control)
RecreateHandle()	Forces the re-creation of the handle for the control. (Inherited from Control)
RectangleToClient(Rectangle)	Computes the size and location of the specified screen rectangle in client coordinates. (Inherited from Control)
RectangleToScreen(Rectangle)	Computes the size and location of the specified client rectangle in screen coordinates. (Inherited from Control)
Refresh()	Forces the control to invalidate its client area and immediately redraw itself and any child controls. (Inherited from Control)
RescaleConstantsForDpi(Int32, Int32)	When overridden in a derived class, handles the rescaling of any magic numbers that are used in control painting. (Inherited from ToolStrip)
ResetBackColor()	Resets the BackColor property to its default value. (Inherited from Control)
ResetBindings()	Causes a control bound to the BindingSource to reread all the items in the list and refresh their displayed values. (Inherited from Control)
ResetCursor()	Resets the Cursor property to its default value. (Inherited from Control)
ResetFont()	Resets the Font property to its default value. (Inherited from Control)
ResetForeColor()	Resets the ForeColor property to its default value. (Inherited from Control)
ResetImeMode()	Resets the ImeMode property to its default value. (Inherited from Control)
ResetMinimumSize()	This method is not relevant for this class. (Inherited from ToolStrip)
ResetMouseEventArgs()	Resets the control to handle the MouseLeave event. (Inherited from Control)
ResetRightToLeft()	Resets the RightToLeft property to its default value. (Inherited from Control)
ResetText()	Resets the Text property to its default value (Empty). (Inherited from Control)
RestoreFocus()	Controls the return location of the focus. (Inherited from ToolStrip)
ResumeLayout()	Resumes usual layout logic. (Inherited from Control)
ResumeLayout(Boolean)	Resumes usual layout logic, optionally forcing an immediate layout of pending layout requests. (Inherited from Control)
RtlTranslateAlignment(ContentAlignment)	Converts the specified ContentAlignment to the appropriate ContentAlignment to support right-to-left text. (Inherited from Control)
RtlTranslateAlignment(HorizontalAlignment)	Converts the specified HorizontalAlignment to the appropriate HorizontalAlignment to support right-to-left text. (Inherited from Control)
RtlTranslateAlignment(LeftRightAlignment)	Converts the specified LeftRightAlignment to the appropriate LeftRightAlignment to support right-to-left text. (Inherited from Control)
RtlTranslateContent(ContentAlignment)	Converts the specified ContentAlignment to the appropriate ContentAlignment to support right-to-left text. (Inherited from Control)
RtlTranslateHorizontal(HorizontalAlignment)	Converts the specified HorizontalAlignment to the appropriate HorizontalAlignment to support right-to-left text. (Inherited from Control)
RtlTranslateLeftRight(LeftRightAlignment)	Converts the specified LeftRightAlignment to the appropriate LeftRightAlignment to support right-to-left text. (Inherited from Control)
Scale(Single, Single)	Obsolete. Scales the entire control and any child controls. (Inherited from Control)
Scale(Single)	Obsolete. Scales the control and any child controls. (Inherited from Control)
Scale(SizeF)	Scales the control and all child controls by the specified scaling factor. (Inherited from Control)
ScaleBitmapLogicalToDevice(Bitmap)	Scales a logical bitmap value to it's equivalent device unit value when a DPI change occurs. (Inherited from Control)
ScaleControl(SizeF, BoundsSpecified)	Scales a control's location, size, padding and margin.
ScaleCore(Single, Single)	This method is not relevant to this class.
ScrollControlIntoView(Control)	Scrolls the specified child control into view on an auto-scroll enabled control. (Inherited from ScrollableControl)
ScrollToControl(Control)	Calculates the scroll offset to the specified child control. (Inherited from ScrollableControl)
Select()	Activates the control. (Inherited from Control)
Select(Boolean, Boolean)	Activates a child control. Optionally specifies the direction in the tab order to select the control from. (Inherited from ToolStrip)
SelectNextControl(Control, Boolean, Boolean, Boolean, Boolean)	Activates the next control. (Inherited from Control)
SendToBack()	Sends the control to the back of the z-order. (Inherited from Control)
SetAutoScrollMargin(Int32, Int32)	This method is not relevant for this class. (Inherited from ToolStrip)
SetAutoSizeMode(AutoSizeMode)	Sets a value indicating how a control will behave when its AutoSize property is enabled. (Inherited from Control)
SetBounds(Int32, Int32, Int32, Int32, BoundsSpecified)	Sets the specified bounds of the control to the specified location and size. (Inherited from Control)
SetBounds(Int32, Int32, Int32, Int32)	Sets the bounds of the control to the specified location and size. (Inherited from Control)
SetBoundsCore(Int32, Int32, Int32, Int32, BoundsSpecified)	Performs the work of setting the specified bounds of this control.
SetClientSizeCore(Int32, Int32)	Sets the size of the client area of the control. (Inherited from Control)
SetDisplayedItems()	Resets the collection of displayed and overflow items after a layout is done. (Inherited from ToolStrip)
SetDisplayRectLocation(Int32, Int32)	Positions the display window to the specified value. (Inherited from ScrollableControl)
SetItemLocation(ToolStripItem, Point)	Anchors a ToolStripItem to a particular place on a ToolStrip. (Inherited from ToolStrip)
SetScrollState(Int32, Boolean)	Sets the specified scroll state flag. (Inherited from ScrollableControl)
SetStyle(ControlStyles, Boolean)	Sets a specified ControlStyles flag to either true or false. (Inherited from Control)
SetTopLevel(Boolean)	Sets the control as the top-level control. (Inherited from Control)
SetVisibleCore(Boolean)	Adjusts the size of the owner ToolStrip to accommodate the ToolStripDropDown if the owner ToolStrip is currently displayed, or clears and resets active ToolStripDropDown child controls of the ToolStrip if the ToolStrip is not currently displayed.
Show()	Displays the ToolStripDropDown control in its default position.
Show(Control, Int32, Int32)	Positions the ToolStripDropDown relative to the specified control's horizontal and vertical screen coordinates.
Show(Control, Point, ToolStripDropDownDirection)	Positions the ToolStripDropDown relative to the specified control at the specified location and with the specified direction relative to the parent control.
Show(Control, Point)	Positions the ToolStripDropDown relative to the specified control location.
Show(Int32, Int32)	Positions the ToolStripDropDown relative to the specified screen coordinates.
Show(Point, ToolStripDropDownDirection)	Positions the ToolStripDropDown relative to the specified control location and with the specified direction relative to the parent control.
Show(Point)	Positions the ToolStripDropDown relative to the specified screen location.
SizeFromClientSize(Size)	Determines the size of the entire control from the height and width of its client area. (Inherited from Control)
SuspendLayout()	Temporarily suspends the layout logic for the control. (Inherited from Control)
ToString()	Returns a string that represents the ToolStrip control. (Inherited from ToolStrip)
Update()	Causes the control to redraw the invalidated regions within its client area. (Inherited from Control)
UpdateBounds()	Updates the bounds of the control with the current size and location. (Inherited from Control)
UpdateBounds(Int32, Int32, Int32, Int32, Int32, Int32)	Updates the bounds of the control with the specified size, location, and client size. (Inherited from Control)
UpdateBounds(Int32, Int32, Int32, Int32)	Updates the bounds of the control with the specified size and location. (Inherited from Control)
UpdateStyles()	Forces the assigned styles to be reapplied to the control. (Inherited from Control)
UpdateZOrder()	Updates the control in its parent's z-order. (Inherited from Control)
WndProc(Message)	Processes Windows messages.

Events

AutoSizeChanged	Occurs when the AutoSize property has changed. (Inherited from ToolStrip)
BackColorChanged	Occurs when the value of the BackColor property changes. (Inherited from Control)
BackgroundImageChanged	Occurs when the value of the BackgroundImage property changes.
BackgroundImageLayoutChanged	Occurs when the value of the BackgroundImage property changes.
BeginDrag	Occurs when the user begins to drag the ToolStrip control. (Inherited from ToolStrip)
BindingContextChanged	Occurs when the value of the BindingContext property changes.
CausesValidationChanged	Occurs when the CausesValidation property changes. (Inherited from ToolStrip)
ChangeUICues	Occurs when the focus or keyboard user interface (UI) cues change.
Click	Occurs when the control is clicked. (Inherited from Control)
ClientSizeChanged	Occurs when the value of the ClientSize property changes. (Inherited from Control)
Closed	Occurs when the ToolStripDropDown is closed.
Closing	Occurs when the ToolStripDropDown control is about to close.
ContextMenuChanged	Occurs when the value of the ContextMenu property changes. (Inherited from Control)
ContextMenuStripChanged	This event is not relevant to this class.
ControlAdded	This event is not relevant for this class. (Inherited from ToolStrip)
ControlRemoved	This event is not relevant for this class. (Inherited from ToolStrip)
CursorChanged	Occurs when the value of the Cursor property changes. (Inherited from ToolStrip)
DataContextChanged	Occurs when the value of the DataContext property changes. (Inherited from Control)
Disposed	Occurs when the component is disposed by a call to the Dispose() method. (Inherited from Component)
DockChanged	This event is not relevant to this class.
DoubleClick	Occurs when the control is double-clicked. (Inherited from Control)
DpiChangedAfterParent	Occurs when the DPI setting for a control is changed programmatically after the DPI of its parent control or form has changed. (Inherited from Control)
DpiChangedBeforeParent	Occurs when the DPI setting for a control is changed programmatically before a DPI change event for its parent control or form has occurred. (Inherited from Control)
DragDrop	Occurs when a drag-and-drop operation is completed. (Inherited from Control)
DragEnter	Occurs when an object is dragged into the control's bounds. (Inherited from Control)
DragLeave	Occurs when an object is dragged out of the control's bounds. (Inherited from Control)
DragOver	Occurs when an object is dragged over the control's bounds. (Inherited from Control)
EnabledChanged	Occurs when the Enabled property value has changed. (Inherited from Control)
EndDrag	Occurs when the user stops dragging the ToolStrip control. (Inherited from ToolStrip)
Enter	Occurs when the focus enters the ToolStripDropDown.
FontChanged	Occurs when the value of the Font property changes.
ForeColorChanged	Occurs when the value of the ForeColor property changes.
GiveFeedback	This event is not relevant for this class.
GotFocus	Occurs when the control receives focus. (Inherited from Control)
HandleCreated	Occurs when a handle is created for the control. (Inherited from Control)
HandleDestroyed	Occurs when the control's handle is in the process of being destroyed. (Inherited from Control)
HelpRequested	Occurs when the user requests help for a control.
ImeModeChanged	Occurs when the ImeModeChanged property has changed.
Invalidated	Occurs when a control's display requires redrawing. (Inherited from Control)
ItemAdded	Occurs when a new ToolStripItem is added to the ToolStripItemCollection. (Inherited from ToolStrip)
ItemClicked	Occurs when the ToolStripItem is clicked. (Inherited from ToolStrip)
ItemRemoved	Occurs when a ToolStripItem is removed from the ToolStripItemCollection. (Inherited from ToolStrip)
KeyDown	Occurs when a key is pressed and held down while the ToolStripDropDown has focus.
KeyPress	Occurs when a key is pressed while the ToolStripDropDown has focus.
KeyUp	Occurs when a key is released while the control has focus.
Layout	Occurs when a control should reposition its child controls. (Inherited from Control)
LayoutCompleted	Occurs when the layout of the ToolStrip is complete. (Inherited from ToolStrip)
LayoutStyleChanged	Occurs when the value of the LayoutStyle property changes. (Inherited from ToolStrip)
Leave	Occurs when the input focus leaves the control.
LocationChanged	Occurs when the Location property value has changed. (Inherited from Control)
LostFocus	Occurs when the control loses focus. (Inherited from Control)
MarginChanged	Occurs when the control's margin changes. (Inherited from Control)
MouseCaptureChanged	Occurs when the control loses mouse capture. (Inherited from Control)
MouseClick	Occurs when the control is clicked by the mouse. (Inherited from Control)
MouseDoubleClick	Occurs when the control is double clicked by the mouse. (Inherited from Control)
MouseDown	Occurs when the mouse pointer is over the control and a mouse button is pressed. (Inherited from Control)
MouseEnter	Occurs when the mouse pointer enters the control. (Inherited from Control)
MouseHover	Occurs when the mouse pointer rests on the control. (Inherited from Control)
MouseLeave	Occurs when the mouse pointer leaves the control. (Inherited from Control)
MouseMove	Occurs when the mouse pointer is moved over the control. (Inherited from Control)
MouseUp	Occurs when the mouse pointer is over the control and a mouse button is released. (Inherited from Control)
MouseWheel	Occurs when the mouse wheel moves while the control has focus. (Inherited from Control)
Move	Occurs when the control is moved. (Inherited from Control)
Opened	Occurs when the ToolStripDropDown is opened.
Opening	Occurs when the ToolStripDropDown control is opening.
PaddingChanged	Occurs when the control's padding changes. (Inherited from Control)
Paint	Occurs when the control is redrawn. (Inherited from Control)
PaintGrip	Occurs when the ToolStrip move handle is painted. (Inherited from ToolStrip)
ParentChanged	Occurs when the Parent property value changes. (Inherited from Control)
PreviewKeyDown	Occurs before the KeyDown event when a key is pressed while focus is on this control. (Inherited from Control)
QueryAccessibilityHelp	Occurs when AccessibleObject is providing help to accessibility applications. (Inherited from Control)
QueryContinueDrag	Occurs during a drag-and-drop operation and enables the drag source to determine whether the drag-and-drop operation should be canceled. (Inherited from Control)
RegionChanged	Occurs when the value of the Region property changes.
RendererChanged	Occurs when the value of the Renderer property changes. (Inherited from ToolStrip)
Resize	Occurs when the control is resized. (Inherited from Control)
RightToLeftChanged	Occurs when the RightToLeft property value changes. (Inherited from Control)
Scroll	This event is not relevant for this class.
SizeChanged	Occurs when the Size property value changes. (Inherited from Control)
StyleChanged	Occurs when the ToolStripLayoutStyle style changes.
SystemColorsChanged	Occurs when the system colors change. (Inherited from Control)
TabIndexChanged	This event is not relevant to this class.
TabStopChanged	This event is not relevant for this class.
TextChanged	This event is not relevant for this class.
Validated	This event is not relevant for this class.
Validating	This event is not relevant for this class.
VisibleChanged	Occurs when the Visible property value changes. (Inherited from Control)

Explicit Interface Implementations

IDropTarget.OnDragDrop(DragEventArgs)	Raises the DragDrop event. (Inherited from Control)
IDropTarget.OnDragEnter(DragEventArgs)	Raises the DragEnter event. (Inherited from Control)
IDropTarget.OnDragLeave(EventArgs)	Raises the DragLeave event. (Inherited from Control)
IDropTarget.OnDragOver(DragEventArgs)	Raises the DragOver event. (Inherited from Control)

See also

• ToolStripDropDownButton
• ToolStripDropDownItem
• ToolStrip Control (Windows Forms)