using System;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication7
{
    public partial class Form1 : Form
    {
        private static Form form;
        public Form1()
        {
            InitializeComponent();
        }
        public static void StartTask(Action action, Action onFinish = null)
        {
            var task = new Task(() =>
            {
                action();
                if (onFinish != null)
                {
                    form.BeginInvoke(new FinishDelegele(onFinish));
                }
            });
            task.Start();
        }
        public delegate void FinishDelegele();
        private void button1_Click(object sender, EventArgs e)
        {
            bool s = false;
            StartTask(() =>
            {
                HttpHelper.Get("http://www.hao123.com");
            }, () =>
            {
                    HttpHelper.Get("http://www.baidu.com");              
            });
        }
    }
}

本人的想法是等访问完hao123后再访问百度，但是程序运行后只会访问hao123，不会访问百度，这是为什么呢？