C# Winform 界面操作异步回调 AsyncCallback

using System;
using System.Collections.Generic;
using System.Threading;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            m_DebugActionDic = new Dictionary<object, Func<bool>>();
        }

        private Dictionary<object, Func<bool>> m_DebugActionDic;
        private string m_ErrorMessage;
        private void ResultCallBack(IAsyncResult res)
        {
            Control ctrl = res.AsyncState as Control;
            ctrl.Invoke(new Action(() => ctrl.Enabled = true));

            if (!m_DebugActionDic[res.AsyncState].EndInvoke(res))
            {
                MessageBox.Show(m_ErrorMessage);
            }

            m_DebugActionDic.Remove(res.AsyncState);
        }

        private bool Button1Action()
        {
            try
            {
                int floor = int.Parse(textBox1.Text);
                Thread.Sleep(3000);

                return true;
            }
            catch (Exception ex)
            {
                m_ErrorMessage = ex.Message;
                return false;
            }
        }

        private bool Button2Action()
        {
            try
            {
                int floor = int.Parse(textBox2.Text);
                Thread.Sleep(3000);

                return true;
            }
            catch (Exception ex)
            {
                m_ErrorMessage = ex.Message;
                return false;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Control ctrl = sender as Control;
            ctrl.Enabled = false;
            m_DebugActionDic.Add(sender, new Func<bool>(Button1Action));
            m_DebugActionDic[sender].BeginInvoke(ResultCallBack, sender);
        }

        private void button2_Click(object sender, EventArgs e) // Button 时间可以都关联一个就可以了
        {
            Control ctrl = sender as Control;
            ctrl.Enabled = false;
            m_DebugActionDic.Add(sender, new Func<bool>(Button2Action));
            m_DebugActionDic[sender].BeginInvoke(ResultCallBack, sender);
        }
    }
}