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TextRange.Select Method

Updates the current selection, taking two TextPointer positions to indicate the updated selection.

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

public void Select(
	TextPointer position1,
	TextPointer position2


Type: System.Windows.Documents.TextPointer

A fixed anchor position that marks one end of the updated selection.

Type: System.Windows.Documents.TextPointer

A movable position that marks the other end of the updated selection.


Occurs when position1 and position2 are not positioned within the same document.


Occurs when position1 or position2 is null.

A TextRange is formed from a selection between two positions indicated by TextPointers. One of these positions (indicated by position1) is fixed with respect to the selection, while the other position (indicated by position2) is movable. This is similar to how a selection made by a user using the mouse or keyboard behaves.

The actual ends of the new selection may be adjusted to match any selection heuristics that are applicable to the document that contains the new current selection.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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