Remarks
The property returns null when the text selection contains multiple characters with mixed setting.
Gets or sets a value specifying whether text is bold at the current input position. If text is selected, the property specifies this attribute for the whole selected text.
public bool? Bold { get; set; }
Public Property Bold() As Nullable(Of Boolean)
The following XAML example binds the Bold property to a check box:
<CheckBox
Height="20"
Name="checkBoxBold"
IsChecked="{Binding ElementName=textControl1, Path=InputFormat.Bold, Mode=TwoWay}">
Bold</CheckBox>
The property returns null when the text selection contains multiple characters with mixed setting.