C1DropDownControl Class

[ToolboxBitmap(typeof(C1DropDownControl), "C1DropDownControl.png")]
public class C1DropDownControl : C1TextBox, IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, ISupportInitialize, ICustomTypeDescriptor, IEmbeddedEditor

<ToolboxBitmap(GetType(C1DropDownControl), "C1DropDownControl.png")>
Public Class C1DropDownControl
    Inherits C1TextBox
    Implements IDropTarget, ISynchronizeInvoke, IWin32Window, IBindableComponent, IComponent, IDisposable, ISupportInitialize, ICustomTypeDescriptor, IEmbeddedEditor

Constructors

Name	Description
C1DropDownControl()	Initializes a new instance of the C1DropDownControl class.

Properties

Name	Description
AutoOpen	Gets or sets a value indicating whether to open the combo box when the control receives the focus.
ButtonCursor	The cursor that is displayed when the mouse is over a button.
ButtonImages	Gets or sets the images for buttons
ButtonWidth	Specifies the button width instead of using the default width.
ContentHeight
Cursor	Gets or sets the cursor that is displayed when the mouse pointer is over the control.
CustomAreaPlace	This property is for internal use only.
CustomAreaWidth	This property is for internal use only.
DefaultDropDownForm	This method is for internal use only.
DefaultDropDownFormClassName	Specifies form class that is used by default as the dropdown for the control.
DefaultSize	This method is for internal use only.
DefaultThemeRootPath	Default path
DropDownForm	Returns dropdown form instance associated with the control.
DropDownFormAlign	Alignment of the dropdown form relative to the control.
DropDownFormClassName	Specifies the class name of a Form serving as the dropdown window.
DropDownFormCreationTime	Determines the time when drop down form is created.
DropDownStyle	Gets or sets the style of the combo box.
DroppedDown	Run-time read-only property indicating if the dropdown is currently open.
GapHeight	Distance in pixels between the control edge and the dropdown.
Image	Gets or sets the button image.
ImageIndex	Gets or sets the index of the button image in the ImageList.
ImageKey	Gets or sets the key of the button image in the ImageList.
ImageList	Gets or sets the ImageList to get the images to display in the drop down items.
ImagePadding	Gets or sets the image padding.
ImagePlace	Has valid value only if ShowValueImage returns true.
ImageTransparentColor	Gets or sets the color to treat as transparent in a image.
InterceptArrowKeys	Determines if the up/down buttons intercept and handle Up and Down arrow keys.
MinSizeInternal	This method is for internal use only.
MouseClickPassThrough	Gets or sets whether the mouse click event is consumed or passed through after closing the dropdown.
ReadOnly
ShowCustomButton	Determines if the modal button is visible.
ShowDropDownButton	Determines if the dropdown button is visible.
ShowImage	Determines if image should be shown.
ShowModalButton	Determines if the modal button is visible.
ShowUpDownButtons	Determines if the up/down buttons are visible.
UpDownButtonAlignment	Gets or sets the alignment of the spin button.
VisibleButtons	Gets or sets a value specifying which buttons are visible. The default is (UpDown Or DropDown).

Methods

Name	Description
CalcSizeInternal()	This method is for internal use only.
CloseDropDown()	Closes the dropdown.
CloseDropDown(bool)	Closes the dropdown.
CreateAccessibilityInstance()
Dispose(bool)	Releases the resources used by the C1DropDownControl.
DrawCustomArea(Graphics)	This method is for internal use only.
DrawImage(Graphics, Rectangle)	Draws image in the control.
DrawImage(Graphics, IntPtr, Rectangle)	Draws image in the control.
GetImageSize()	Returns image size.
OnBeforeDropDownOpen(CancelEventArgs)
OnButtonCursorChanged(EventArgs)	This method is for internal use only.
OnClick(EventArgs)
OnCreateDropDownFrom(DropDownForm)	Called when a drop down form is created.
OnCursorChanged(EventArgs)	This method is for internal use only.
OnCustomButtonClick(EventArgs)	This method is for internal use only.
OnDropDownAlignChanged(EventArgs)	This method is for internal use only.
OnDropDownClosed(DropDownClosedEventArgs)	This method is for internal use only.
OnDropDownFormAlignChanged(EventArgs)	This method is for internal use only.
OnDropDownOpened(EventArgs)	This method is for internal use only.
OnDropDownOpening(EventArgs)	This method is for internal use only.
OnDropDownStyleChanged()
OnEnabledChanged(EventArgs)	This method is for internal use only.
OnGotFocus(EventArgs)	This method is for internal use only.
OnInvalidated(InvalidateEventArgs)
OnLostFocus(EventArgs)	This method is for internal use only.
OnModalButtonClick(EventArgs)	This method is for internal use only.
OnMouseLeave(EventArgs)	This method is for internal use only.
OnMouseMove(MouseEventArgs)	This method is for internal use only.
OnMouseWheel(MouseEventArgs)	This method is for internal use only.
OnReadOnlyChanged(EventArgs)	This method is for internal use only.
OnTextChanged(EventArgs)	This method is for internal use only.
OnUpDownButtonClick(UpDownButtonClickEventArgs)	This method is for internal use only.
OnValueChanged(EventArgs)	This method is for internal use only.
OpenDropDown()	Shows the dropdown.
PreProcessMessage(ref Message)	This method is for internal use only.
ProcessKeyDown(KeyEventArgs)	This method is for internal use only.
ProcessKeyPress(KeyPressEventArgs)	This method is for internal use only.
ProcessKeyUp(KeyEventArgs)	This method is for internal use only.
ResetButtonCursor()	This method is for internal use only.
ResetButtonImages()	This method is for internal use only.
ResetDropDownFormClassName()	This method is for internal use only.
SetProposedValue(object)	This method works exactly as setting the Value property, except that it does not change the internal variable storing the value before editing, so the user can press Esc and restore the previous value. This method works only in edit or DropDownList mode. If the control is not in edit or DropDownList mode, this methods does nothing.
ShouldDrawPlaceholder()	Indicates whether the placeholder should be drawn.
ShouldHandleEscape()	This method is for internal use only.
ShouldSerializeButtonCursor()	This method is for internal use only.
ShouldSerializeButtonImages()	This method is for internal use only.
ShouldSerializeDropDownFormClassName()	This method is for internal use only.
SpinDown()	Performs the spin down action.
SpinUp()	Performs the spin up action.
WndProc(ref Message)	This method is for internal use only.

Events

Name	Description
BeforeDropDownOpen	Occurs just before the dropdown is opened.
ButtonCursorChanged	Event fired when the value of ButtonCursor property is changed.
CustomButtonClick	Occurs when the Custom button is clicked.
DropDownAlignChanged	Occurs when the value of the DropDownAlign property has changed.
DropDownClosed	Occurs when the dropdown has been closed.
DropDownFormAlignChanged	Occurs when the value of the DropDownFormAlign property has changed.
DropDownOpened	Occurs after the dropdown is opened.
DropDownOpening	Occurs just before the dropdown is opened.
ModalButtonClick	Occurs when the Modal button is clicked.
UpDownButtonClick	Occurs when UpDown buttons are clicked.