AvalonEdit
ITextAnchor Interface
Namespaces ► ICSharpCode.AvalonEdit.Document ► ITextAnchor
The TextAnchor class references an offset (a position between two characters). It automatically updates the offset when text is inserted/removed in front of the anchor.
Declaration Syntax
C#Visual BasicVisual C++
public interface ITextAnchor
Public Interface ITextAnchor
public interface class ITextAnchor
Members
All MembersPropertiesEvents



IconMemberDescription
Column
Gets the column number of this anchor.

Deleted
Occurs after the anchor was deleted.

IsDeleted
Gets whether the anchor was deleted.

Line
Gets the line number of the anchor.

Location
Gets the text location of this anchor.

MovementType
Controls how the anchor moves.

Offset
Gets the offset of the text anchor.

SurviveDeletion

Specifies whether the anchor survives deletion of the text containing it.

false: The anchor is deleted when the a selection that includes the anchor is deleted. true: The anchor is not deleted.


Remarks

Use the Offset property to get the offset from a text anchor. Use the CreateAnchor(Int32) method to create an anchor from an offset.

The document will automatically update all text anchors; and because it uses weak references to do so, the garbage collector can simply collect the anchor object when you don't need it anymore.

Moreover, the document is able to efficiently update a large number of anchors without having to look at each anchor object individually. Updating the offsets of all anchors usually only takes time logarithmic to the number of anchors. Retrieving the Offset property also runs in O(lg N).

Examples
Usage:
 Copy imageCopy
TextAnchor anchor = document.CreateAnchor(offset);
            ChangeMyDocument();
            int newOffset = anchor.Offset;

Assembly: ICSharpCode.AvalonEdit (Module: ICSharpCode.AvalonEdit.dll) Version: 5.0.0.4238