Windows Phone 8.1 Bind only to "Left" Margin properties
I have a static resource:
<x:Double x:Key="dOffset">9.6</x:Double>
I want to present this resource in a property Margin.Left
in style.
I've tried this:
<Style x:Key="HomeButtonTextContainer" TargetType="StackPanel">
<Setter Property="Margin">
<Setter.Value>
<Binding Path="Thickness">
<Binding.Source>
<local:CustomThickness Left="{StaticResource dOffset}" Top="0" Bottom="0" Right="0" />
</Binding.Source>
</Binding>
</Setter.Value>
</Setter>
</Style>
But that won't work. I am unable to declare the thickness as a resource like below, the compiler is complaining about this.
<Thickness x:Key="dOffset" Left="9.6" Right="0" Left="0" Top="0"></Thickness>
I cannot extract from the Thickness class, so I had to create a Custom that creates the Thickness (CustomThickness) class
How can I solve this?
You cannot install only TopMargin. You must set all values of the Thickness instance. If you don't want to change other fields, just set them to zero.
XAML
<Style x:Key="HomeButtonTextContainer"
TargetType="StackPanel">
<Setter Property="Margin"
Value="{Binding Source={StaticResource dOffset},
Converter={StaticResource myConverter}}">
</Setter>
And you have to instantiate the converter class returning a Thickness instance:
public class MyConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
var topMargin = (double)value;
return new Thickness(0, topMargin, 0, 0);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
Edited: Windows Phone does not support binding to a setter value. Perhaps this article will help you.