Articolo
11/17/2011

Block Class

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

An abstract class that provides a base for all block-level content elements.

Inheritance Hierarchy

System.Object
  System.Windows.DependencyObject
    System.Windows.Documents.TextElement
      System.Windows.Documents.Block
        System.Windows.Documents.Paragraph
        System.Windows.Documents.Section

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

Syntax

'Declaration
Public MustInherit Class Block _
    Inherits TextElement

public abstract class Block : TextElement

The Block type exposes the following members.

Constructors

	Name	Description
	Block	Initializes a new instance of the Block class.

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Properties

	Name	Description
	CharacterSpacing	Gets or sets the distance between characters of text in the control measured in 1000ths of the font size. (Inherited from TextElement.)
	ContentEnd	Gets a TextPointer that represents the end of the content in the element. (Inherited from TextElement.)
	ContentStart	Gets a TextPointer that represents the start of content in the element. (Inherited from TextElement.)
	Dispatcher	Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
	ElementEnd	Gets a TextPointer that represents the position just after the end of the element. (Inherited from TextElement.)
	ElementStart	Gets a TextPointer that represents the position just before the start of the element. (Inherited from TextElement.)
	FontFamily	Gets or sets the preferred top-level font family for the content of the element. (Inherited from TextElement.)
	FontSize	Gets or sets the font size for the content of the element. (Inherited from TextElement.)
	FontStretch	Gets or sets the glyph width of the font in a family to select. (Inherited from TextElement.)
	FontStyle	Gets or sets the font style for the content in this element. (Inherited from TextElement.)
	FontWeight	Gets or sets the top-level font weight to select from the font family for the content in this element. (Inherited from TextElement.)
	Foreground	Gets or sets the Brush to apply to the content in this element. (Inherited from TextElement.)
	Language	Gets or sets the language of the content within an TextElement element. (Inherited from TextElement.)
	LineHeight	Gets or sets the height of each line of content.
	LineStackingStrategy	Gets or sets a value that indicates how a line box is determined for each line of text in a Block.
	Name	Gets or sets a unique identification for the object. Name can only be set from initial parsing of XAML. (Inherited from TextElement.)
	TextAlignment	Gets or sets the horizontal alignment of the text content.

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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.)
	FindName	Gets an object in the Silverlight object model by referencing the object's x:Name or Name attribute value. (Inherited from TextElement.)
	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.)
	OnCreateAutomationPeer	Returns a class-specific AutomationPeer implementation for use by the Silverlight automation infrastructure. (Inherited from TextElement.)
	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.)

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Fields

	Name	Description
	LineHeightProperty	Identifies the LineHeight dependency property.
	LineStackingStrategyProperty	Identifies the LineStackingStrategy dependency property.
	TextAlignmentProperty	Identifies the TextAlignment dependency property.

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Remarks

Elements that inherit from the Block class (such as Paragraph) can be used to group elements under a common parent or to apply common attributes to a group. Conceptually, Block is similar to a <DIV> tag in HTML.

Note:
The XAML syntax for properties of Block show Paragraph as the object element. This is because in Silverlight 4 and Silverlight 5, Paragraph is the only XAML-usable type that derives from Block.

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

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.

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