XF 按钮控件

<?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:App19"

             x:Class="App19.MainPage">

    <StackLayout VerticalOptions="Center">

    <Button BorderColor="Black" Text="点击我" BorderWidth="2" BorderRadius="10" Clicked="Button_Clicked"></Button>

    </StackLayout>

</ContentPage>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Xamarin.Forms;

namespace App19

{

    public partial class MainPage : ContentPage

    {

        public MainPage()

        {

            InitializeComponent();

        }

private void Button_Clicked(object sender, EventArgs e)

        {

            ((Button)sender).BackgroundColor = Color.Red;

        }

    }

}