TrackBar

Wisej.Web.TrackBar

Namespace: Wisej.Web

Assembly: Wisej.Framework (4.0.0.0)

• Control

  • TrackBar

Enables the user to choose between a range of values by sliding a small bar along another bar.

C#

public class TrackBar : Control, ISupportInitialize

VB.NET

Constructors

TrackBar()

Initializes a new instance of the TrackBar class.

TrackBar(onValueChanged)

Initializes a new instance of the TrackBar class with a specified initial value and an event handler for the ValueChanged event.

Name	Type	Description
onValueChanged	Action<Object, EventArgs>	An Action delegate to handle the ValueChanged event. Can be null.

TrackBar(location, size, onValueChanged)

Initializes a new instance of the TrackBar class with a specified location and size.

Name	Type	Description
location	Point	The location of the TrackBar on its parent control.
size	Size	The size of the TrackBar.
onValueChanged	Action<Object, EventArgs>	An Action delegate to handle the ValueChanged event. Can be null.

Properties

AutoSize

Boolean: Returns or sets whether the height or width of the track bar is being automatically sized. (Default: True)

DefaultSize

Size: Returns the default size of the TrackBar.

LargeChange

Int32: Returns or sets a value to be added to or subtracted from the Value property when the scroll box is moved a large distance. (Default: 5)

Throws:

• ArgumentException The assigned value is less than 0.

Maximum

Int32: Returns or sets the upper limit of the range this TrackBar is working with. (Default: 10)

Minimum

Int32: Returns or sets the lower limit of the range this TrackBar is working with. (Default: 0)

Orientation

Orientation: Returns or sets a value indicating the horizontal or vertical orientation of the track bar. (Default: Horizontal)

ShowValue

Boolean: Returns or sets a flag indicating whether the value is displayed in a bubble control while the user is moving the knob. (Default: True)

The appearance key of the child bubble component is "bubble".

SmallChange

Int32: Returns or sets the value added to or subtracted from the Value property when the scroll box is moved a small distance. (Default: 1)

TickFrequency

Int32: Returns or sets a value that specifies the delta between ticks drawn on the control. (Default: 1)

TickStyle

TickStyle: Returns or sets a value indicating how to display the tick marks on the track bar. (Default: BottomRight)

Value

Int32: Returns or sets a numeric value that represents the current position of the scroll box on the track bar. (Default: 0)

Throws:

• ArgumentException The assigned value is less than the value of Minimum; or the assigned value is greater than the value of Maximum.

Methods

IsInputKey(keyData)

Handles special input keys, such as PAGE UP, PAGE DOWN, HOME, and END.

Parameter	Type	Description
keyData	Keys	One of the Keys values.

Returns: Boolean. true if the specified key is a regular input key; otherwise, false.

OnScroll(e)

Fires the Scroll event.

Parameter	Type	Description
e	EventArgs	A EventArgs that contains the event data.

OnTextChanged(e)

Fires the TextChanged event.

Parameter	Type	Description
e	EventArgs	The EventArgs that contains the event data.

OnValueChanged(e)

Fires the ValueChanged event.

Parameter	Type	Description
e	EventArgs	The EventArgs that contains the event data.

OnWebEvent(e)

Processes the event from the client.

Parameter	Type	Description
e	WisejEventArgs	Event arguments.

OnWebRender(config)

Renders the client component.

Parameter	Type	Description
config	Object	Dynamic configuration object.

SetBoundsCore(x, y, width, height, specified)

Sets the specified bounds of the ComboBox control.

Parameter	Type	Description
x	Int32	The new Left property value of the control.
y	Int32	The new Top property value of the control.
width	Int32	The new Width property value of the control.
height	Int32	Not used.
specified	BoundsSpecified	A combination of the BoundsSpecified values.

SetRange(minValue, maxValue)

Sets the minimum and maximum values for a TrackBar.

Parameter	Type	Description
minValue	Int32	The lower limit of the range of the track bar.
maxValue	Int32	The upper limit of the range of the track bar.

Events

AutoSizeChanged

EventHandler Fired when the value of the AutoSize property changes.

Scroll

EventHandler Fired when either a mouse or keyboard action moves the scroll box.

TextChanged

EventHandler Fired when the Text property changes.

ValueChanged

EventHandler Fired when the Value property of a track bar changes, either by movement of the scroll box or by manipulation in code.

Implements

Name	Description
IUserData	Provides access to the UserData and Tag properties associated to the component implementing this interface.
IBindableComponent	Bindable components implement this interface.
IDropTarget	Controls that support drag & drop operations implement this interface.
IWisejComponent	All wisej components implement this interface.
IWisejControl	All wisej controls derived from the Control class must implement this interface.
IWisejSerializable	Allows an object to serialize itself.