TextBox.GetRectFromCharacterIndex Method (Int32, Boolean)

Returns the rectangle for the leading or trailing edge of the character at the specified index.

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

public Rect GetRectFromCharacterIndex(
	int charIndex,
	bool trailingEdge
)

Parameters

charIndex
Type: System.Int32
The zero-based character index of the character for which to retrieve the rectangle.
trailingEdge
Type: System.Boolean
true to get the trailing edge of the character; false to get the leading edge of the character.

Return Value

Type: System.Windows.Rect
A rectangle for an edge of the character at the specified character index, or Empty if a bounding rectangle cannot be determined.

ExceptionCondition
ArgumentOutOfRangeException

charIndex is negative or is greater than the length of the content.

Because this method returns a rectangle that represents an edge of the character, the width of the rectangle is 0.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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