C# 多线程调用控件



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

namespace WindowsFormsApplication5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender,EventArgs e)
        {
            Thread th = new Thread(test);
            th.IsBackground = true;
            th.Start("hahaha");//在此传入要执行的方法的参数
        }

        void test(object obj)//多线程只能接受object参数类型的方法
        {
            for (int i = 0; i < 10000000; i++ )
            {
                if (button1.Invokerequired)
                {
                    button1.Invoke(new Action<string>(s => { button1.Text = s; }),obj);
                }
                else
                {
                    button1.Text = i.ToString();
                }

                //button1.Text = i.ToString();
            }
        }
    }
}