Documentation

Class RadialGaugeNeedle

Represent a scale indicator that points to a value.

Inheritance
System.Object
DisposableObject
RadObject
RadElement
VisualElement
RadComponentElement
RadItem
UIItemBase
LightVisualElement
GaugeVisualElement
RadialGaugeNeedle
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Telerik.WinControls.UI.Gauges
Assembly: Telerik.WinControls.UI.dll

Syntax

public class RadialGaugeNeedle : GaugeVisualElement, INotifyPropertyChanged, ICustomTypeDescriptor, ISupportSystemSkin, IComponent, IDisposable, IBindableComponent, ISupportDrag, ISupportDrop, IShortcutProvider, IStylableElement, IStylableNode, IPrimitiveElement, IShapedElement, IFillElement, IBorderElement, IBoxStyle, IBoxElement, IImageElement, ITextPrimitive, ITextProvider, IDrawing

Constructors

RadialGaugeNeedle()

Declaration
public RadialGaugeNeedle()

RadialGaugeNeedle(RadRadialGaugeElement)

Declaration
public RadialGaugeNeedle(RadRadialGaugeElement owner)
Parameters
RadRadialGaugeElement owner

Fields

ValueProperty

Declaration
public static RadProperty ValueProperty
Field Value
RadProperty

Properties

BackLenghtPercentage

Obsolete. This property has a typo in the name. Use the BackLengthPercentage property instead.

Declaration
[Obsolete("Obsolete. Use the BackLengthPercentage property instead. This property will be removed in R1 2026.")]
public double BackLenghtPercentage { get; set; }
Property Value
System.Double

BackLengthPercentage

Specifies the value with which the needle juts out from the center point.

Declaration
public double BackLengthPercentage { get; set; }
Property Value
System.Double

BindOffset

Specifies the value offset of the needle according to the gauge's value.

Declaration
public double BindOffset { get; set; }
Property Value
System.Double

BindValue

Indicates whether the needle's value is bound to the gauge's Value.

Declaration
public bool BindValue { get; set; }
Property Value
System.Boolean

InnerPointRadiusPercentage

Specifies the inner radius of the needle's start point.

Declaration
public double InnerPointRadiusPercentage { get; set; }
Property Value
System.Double

LenghtPercentage

Obsolete. This property has a typo in the name. Use the LengthPercentage property instead.

Declaration
[Obsolete("Obsolete. Use the LengthPercentage property instead. This property will be removed in R1 2026.")]
public double LenghtPercentage { get; set; }
Property Value
System.Double

LengthPercentage

Controls how long the needle will be rendered.

Declaration
public double LengthPercentage { get; set; }
Property Value
System.Double

Path

Declaration
public override GraphicsPath Path { get; }
Property Value
System.Drawing.Drawing2D.GraphicsPath

Overrides

PointRadiusPercentage

Specifies the outer radius of the needle's start point.

Declaration
public double PointRadiusPercentage { get; set; }
Property Value
System.Double

Thickness

Controls the needle width.

Declaration
public double Thickness { get; set; }
Property Value
System.Double

Value

Specifies the needle's value.

Declaration
public float Value { get; set; }
Property Value
System.Single

Methods

CreateChildElements()

Declaration
protected override void CreateChildElements()
Overrides

OnNotifyPropertyChanged(String)

Declaration
protected override void OnNotifyPropertyChanged(string propertyName)
Parameters
System.String propertyName

Overrides

OnParentChanged(RadElement)

Declaration
protected override void OnParentChanged(RadElement previousParent)
Parameters
RadElement previousParent

Overrides

OnValueChanged()

Declaration
protected void OnValueChanged()

Paint(Graphics, Rectangle)

Declaration
public void Paint(Graphics graphics, Rectangle boundingRectangle)
Parameters
System.Drawing.Graphics graphics

System.Drawing.Rectangle boundingRectangle

Implements

PaintElement(IGraphics, Single, SizeF)

Declaration
protected override void PaintElement(IGraphics graphics, float angle, SizeF scale)
Parameters
IGraphics graphics

System.Single angle

System.Drawing.SizeF scale

Overrides

Events

ValueChanged

Declaration
public event EventHandler ValueChanged
Event Type
System.EventHandler

Extension Methods