How to concat a string from a class in xamarin forms?

Question

I have a label inside my listview

<Label Text="{Binding Price,StringFormat='GlobalVariable.Currency{0:F0}'}"

Result should be : $0.00

I want to concat the currency to the price

My Global Variable Class:

public Static Class GlobalVariable
{
  Currency="$";
}

// currency can be changable.

so how to concat the currency from a class to xaml?

lawiluk · Accepted Answer · 2019-03-18 10:31:27Z

2

It is not possible out of the box. See this topic for more info: If I were you, I would either:

format string on ViewModel layer,
use ValueConverter for converting the value.

edited Mar 18, 2019 at 10:31

answered Mar 18, 2019 at 7:11

lawiluk

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Comments

Bruno Caceiro · Accepted Answer · 2019-03-18 14:14:39Z

You can use a converter:

public class CurrencyConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        string value = value as string;
        return GlobalVariable + value;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
       throw new NotImplementedException();
    }
}

In your Page.xaml

 <ContentPage.Resources>
        <ResourceDictionary>
            <converter:CurrencyConverter x:Key="currencyConverter" />
        </ResourceDictionary>
    </ContentPage.Resources>

then, the binding

<Label Text="{Binding Price,Converte={StaticResource currencyConverter}}" />

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