Thread t = null;

        private void InitTSJK()
        {
            t = new Thread(new ThreadStart(GetData));
            t.IsBackground = true;
            t.Start();
        }

        private void GetData()
        {
            while (true)
            {
                QueryIro();
                Thread.Sleep(10000);
            }
        }

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

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

        private void Form1_Load(object sender, EventArgs e)
        {
            Thread t = new Thread(new ThreadStart(GetData));
            t.IsBackground = true;
            t.Start();
        }

        private void GetData()
        {
            var timer = new System.Timers.Timer();
            timer.Interval = 1000;
            timer.Enabled = true;
            timer.AutoReset = true;//设置是执行一次（false）还是一直执行(true)；  
            timer.Start();
            timer.Elapsed += (o, a) =>
            {
                SetData();
                ShowMessage(string.Format("更新时间：" + DateTime.Now));
            };
        }

        //声明委托
        private delegate void SetDataDelegate();
        private void SetData()
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new SetDataDelegate(SetData));
            }
            else
            {
                label1.Text = string.Format("更新时间：" + DateTime.Now);
            }
        }

        //声明委托
        private delegate void ShowMessageDelegate(string message);
        private void ShowMessage(string message)
        {
            if (this.InvokeRequired)
            {
                ShowMessageDelegate showMessageDelegate = ShowMessage;
                this.Invoke(showMessageDelegate, new object[] { message });
            }
            else
            {
                txtbox.Text = message;
            }
        }
    }
}