c#基础求解 求把这段代码执行顺序介绍一下

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using KVS_IIOT_NET_Interface1;
using KVS_IIOT_NET_Interface1.Attribute;
using KVS_IIOT_NET_Interface1.Transmit;

namespace Actuator
{
public class ClassDevice : Interface1
{
#region Interface1接口实现

    public string Name => "执行器";

    public string Description => "描述";

    public string Version => Assembly.GetExecutingAssembly().GetName().Version.ToString();

    public void Delete()
    {

    }

    public void Reload()
    {

    }

    #endregion

    #region 事件

    [AttInterfaceEvent(Name = "电源状态改变事件")]
    public event ClassDelegate.DelegateBoolean EventPowerChanged;

    #endregion

    #region 字段&属性

    private PowerSourceIn _powerSourceIn = new PowerSourceIn();

    [AttInterfaceProperty(Name = "设置供电", IsPort = true)]
    public PowerSource SetPowerSource
    {
        set
        {
            _powerSourceIn.PowerSource = value;
        }
    }

    #endregion

    #region 构造函数

    public ClassDevice()
    {
        _powerSourceIn.EventPowerChanged += _powerSourceIn_EventPowerChanged;
    }

    private void _powerSourceIn_EventPowerChanged(bool value, string eventName)
    {
        EventPowerChanged?.Invoke(value, "EventPowerChanged");
    }

    #endregion

}

}

首先再申明对象时要执行构造函数，然后构造函数会调用_powerSourceIn_EventPowerChanged，至于其他的执行要看对象调用的顺序了，只看类无法确定执行顺序