Controls/UPump.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WarningAndMonitingSystem.Controls
{
    public partial class UPump : UserControl
    {
        public UPump()
        {
            InitializeComponent();
            stateBtn.Click += StateBtn_Click;
        }

        public event EventHandler StateChanged;

        private void StateBtn_Click(object? sender, EventArgs e)
        {
            StateChanged?.Invoke(this, EventArgs.Empty);
        }

        private bool isOn = false;
        [Category("自定义属性")]
        [Description("是否启动")]
        public bool IsOn
        {
            get { return isOn; }
            set
            {
                isOn = value;

                if (isOn)
                {
                    State = "ON";
                    LightImg = Properties.Resources.light_on;
                }
                else
                {
                    State = "OFF";
                    LightImg = Properties.Resources.light_off;
                }
            }
        }

        private Bitmap lightImg = Properties.Resources.light_off;
        [Category("自定义属性")]
        [Description("指示灯图片")]
        public Bitmap LightImg
        {
            get { return lightImg; }
            set
            {
                lightImg = value;
                picBox.Image = lightImg;