Xamarin.Forms / KeyPressEventArgs

I was wondering if anything is close to KeyPressEventArgs in Xamarin Forms, since I need to validate some fields. here is an example with windows forms.

    public static bool ValideringTlf(KeyPressEventArgs e)
    {
        return (e.Handled = char.IsNumber(e.KeyChar) || e.KeyChar == 8 || e.KeyChar == 127 ? false : true);
    }
    public static bool ValideringNavn(KeyPressEventArgs e)
    {
        return (e.Handled = char.IsLetter(e.KeyChar) || e.KeyChar == 8 || e.KeyChar == 32 || e.KeyChar == 127 ? false : true);
    }
    public static bool ValideringVejnr(KeyPressEventArgs e)
    {
        return (e.Handled = char.IsNumber(e.KeyChar) || char.IsLetter(e.KeyChar) || e.KeyChar == 8 || e.KeyChar == 127 ? false : true);
    }
    public static bool ValideringPostnr(KeyPressEventArgs e)
    {
        return (e.Handled = char.IsNumber(e.KeyChar) || e.KeyChar == 8 || e.KeyChar == 127 ? false : true);
    }

Btw these numbers are from Ascii Tabel. Thanks