Question

I’m trying to define fonts which can be reference by many style elements:

<System:String x:Key="FontFamilyDefault">Arial</System:String>
<System:Int32  x:Key="FontSizeDefault">18</System:Int32>
<SolidColorBrush x:Key="FontColourDefault" Color="Black"/>

and my style refers to it by:

<Style TargetType="{x:Type Control}" x:Key="myStyle1">
    <Setter Property="FontSize" Value="{StaticResource FontSizeDefault}" />
    <Setter Property="FontFamily" Value="{StaticResource FontFamilyDefault}" />
    <Setter Property="Foreground" Value="{StaticResource FontColourDefault}" />
</Style>

and the control refers myStyle1:

<Style TargetType="TextBox" BasedOn="{StaticResource myStyle1}" />

I get the following runtime exception:
Unable to cast object of type ‘System.String’ to type ‘System.Windows.Media.FontFamily’.
if I comment out:

<Setter Property="FontFamily" Value="{StaticResource FontFamilyDefault}

then get this exception on the size conersion:
Specified cast is not valid.

can anyone suggest how to convert string to fontfamily and how to specify the font size in xaml?

thanks in advance

Answer 1

You can create a StaticResource with the FontFamily type ..

<FontFamily x:Key="CockpitFont" >Verdana</FontFamily>