Artigo
11/18/2011

LineGeometry Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents the geometry of a line.

Inheritance Hierarchy

System.Object
  System.Windows.DependencyObject
    System.Windows.Media.Geometry
      System.Windows.Media.LineGeometry

Namespace: System.Windows.Media
Assembly: System.Windows (in System.Windows.dll)

Syntax

'Declaration
Public NotInheritable Class LineGeometry _
    Inherits Geometry

public sealed class LineGeometry : Geometry

<LineGeometry .../>

The LineGeometry type exposes the following members.

Constructors

	Name	Description
	LineGeometry	Initializes a new instance of the LineGeometry class that has no length.

Top

Properties

	Name	Description
	Bounds	Gets a Rect that specifies the axis-aligned bounding box of the Geometry. (Inherited from Geometry.)
	Dispatcher	Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
	EndPoint	Gets or sets the end point of a line.
	StartPoint	Gets or sets the start point of the line.
	Transform	Gets or sets the Transform object applied to a Geometry. (Inherited from Geometry.)

Top

Methods

	Name	Description
	CheckAccess	Determines whether the calling thread has access to this object. (Inherited from DependencyObject.)
	ClearValue	Clears the local value of a dependency property. (Inherited from DependencyObject.)
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetAnimationBaseValue	Returns any base value established for a Silverlight dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	GetValue	Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ReadLocalValue	Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.)
	SetValue	Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

Top

Fields

	Name	Description
	EndPointProperty	Identifies the EndPoint dependency property.
	StartPointProperty	Identifies the StartPoint dependency property.

Top

Remarks

To create multiple connected lines, use a LineSegment or Polyline segment with the PathFigure and PathGeometry classes.

Examples

The following example shows how to create and render a LineGeometry object. A Geometry object only defines the geometry of the object—it does not render anything directly—so the example uses a Path shape to render the line. Because a line has no area, setting the Fill property of the Path would have no effect; instead, only the Stroke and StrokeThickness properties are specified. The following illustration shows the output from the example.

A LineGeometry drawn from (10,20) to (100,130)

Diagonal line.

<Canvas Width="200" Height="200">
  <Path Stroke="Black" StrokeThickness="1" >
    <Path.Data>
      <LineGeometry StartPoint="10,20" EndPoint="100,130" />
    </Path.Data>
  </Path>
</Canvas>

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Partilhar via