I am simply doing this below and according to your
documentation it should work, but it throws exception
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:MultiNumeric"
xmlns:syncfusion="clr-namespace:Syncfusion.SfNumericTextBox.XForms;assembly=Syncfusion.SfNumericTextBox.XForms"
xmlns:numeric="clr-namespace:Syncfusion.SfNumericUpDown.XForms;assembly=Syncfusion.SfNumericUpDown.XForms"
xmlns:syncfusion1="clr-namespace:Syncfusion.ListView.XForms;assembly=Syncfusion.SfListView.XForms"
x:Class="MultiNumeric.MainPage">
<ContentPage.Resources>
<ResourceDictionary>
<Style x:Key="NumericStyle" TargetType="numeric:SfNumericUpDown">
</Style>
</ResourceDictionary>
</ContentPage.Resources>
<StackLayout BackgroundColor="White" >
<numeric:SfNumericUpDown x:Name="numerictextbox" Culture="de-DE"/>
</StackLayout>
</ContentPage>
Unhandled Exception:
Xamarin.Forms.Xaml.XamlParseException: Position 16:59. Cannot assign property "Culture": Property does not exists, or is not assignable, or mismatching type between value and property