Размер кнопки Xamarin
<Button Margin="100,100,250,250"/>
Egor
<Button Margin="100,100,250,250"/>
<StackLayout >
<Button Text="1" WidthRequest="50"
HorizontalOptions="Center"></Button>
<Button Text="2" WidthRequest="50"
HorizontalOptions="Center"></Button>
</StackLayout>