Control.FontSize Property

Definition

Gets or sets the font size.

[System.ComponentModel.Bindable(true)]
[System.ComponentModel.TypeConverter(typeof(System.Windows.FontSizeConverter))]
[System.Windows.Localizability(System.Windows.LocalizationCategory.None)]
public double FontSize { get; set; }

Property Value

The size of the text in the Control. The default is MessageFontSize. The font size must be a positive number.

Attributes

Examples

The following example shows how to set the font size property of a control.

<Button Name="btn3" FontSize="10.0" 
        Click="ChangeFontSize">
  FontSize
</Button>
void ChangeFontSize(object sender, RoutedEventArgs e)
{
    fsize = btn3.FontSize;
    if (fsize == 16.0)
    {
        btn3.FontSize = 10.0;
        btn3.Content = "FontSize";
    }
    else
    {
        btn3.FontSize = 16.0;
        btn3.Content = "Control font size changes from 10 to 16.";
    }
}

Remarks

This property only affects a control whose template uses the FontSize property as a parameter. On other controls, this property has no impact.

Dependency Property Information

Item Value
Identifier field FontSizeProperty
Metadata properties set to true AffectsMeasure, AffectsRender, Inherits

XAML Attribute Usage

<object FontSize="double"/>
- or -
<object FontSize ="qualifiedDouble"/>

XAML Values

double Double

A string representation of a Double value. This is interpreted as a device-independent unit (1/96th inch) measurement. Strings need not explicitly include decimal points. For example, a value of 1 is acceptable.

The same Double range restrictions that are mentioned in the Property Value section apply here.

qualifiedDouble A double value as previously described that is followed by one of these unit declaration strings: px, in, cm, pt.

px (default) is device-independent units (1/96th inch per unit)

in is inches; 1in==96px

cm is centimeters; 1cm==(96/2.54) px

pt is points; 1pt==(96/72) px

Note In many cases a double may be set to "Auto," but a Control.FontSize does not render if set to "Auto".

Applies to

製品 バージョン
.NET Framework 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9