TX Text Control .NET for WPF

FontSize Property

Property|Introduced in 16.0
Namespace
TXTextControl
Package
TXTextControl.TextControl.WPF.SDK as TXTextControl.dll from the private NuGet feed or Text Control Offline Packages

Description

Gets or sets the font's size, in twips, at the current input position. If text is selected, the property specifies the font size of the whole selected text.

Syntax

public int? FontSize { get; set; }

Examples

The following XAML example binds the FontSize property to a text box. The size is converted to Point:

…
xmlns:tx="clr-namespace:TXTextControl.WPF;assembly=TXTextControl.WPF"
…
<Window.Resources>
    <tx:MeasureConverter Unit="Point" Decimals="1" x:Key="twipsconv" />
</Window.Resources>
…
<TextBox 
    Height="21" 
    Name="textBoxFontSize" 
    Text="{Binding ElementName=textControl1,
        Path=InputFormat.FontSize,
        Converter={StaticResource twipsconv},
        Mode=TwoWay}"/>

The following example changes the formatting applied to text entered at the end of a document by using InputFormat.FontSize.

textControl.Text = "Project summary";
textControl.InputPosition = new InputPosition(textControl.Text.Length);
InputFormat inputFormat = textControl.InputFormat;

inputFormat.FontSize = 10;
if (inputFormat.FontSize != null)
{
    Console.WriteLine("Input Format: Font Size is available.");
}

Remarks

The property returns null when the text selection contains multiple characters with mixed font sizes.

The WPF.MeasureConverter can be used to convert the property value to another measuring unit.

Further Reading