winform开线程，避免页面假死

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Text.RegularExpressions;
using System.Threading;
using System.Globalization;
using System.Web;


namespace Redis_AddData
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            label1.Text = "";
        }
        int maxSize = 0;  //16753
        int minSize = 0;
        int currentIndex = 0;
        public static string tableName = "FA";

        private void button1_Click(object sender, EventArgs e)
        {
            button1.Enabled = false;

            Thread trs = new Thread(new ThreadStart(dofor));
            trs.IsBackground = true;
            trs.Start();

            progressBar1.Minimum = minSize;

            string sql = "select count(id) from tablea ";
            maxSize = Convert.ToInt32(databind.GetSingle(sql));
            progressBar1.Maximum = maxSize;
        }

        public void dofor()
        {
            SetLableText("数据加载中...");
            currentIndex = minSize;
            string str = "";
            string sql = "select * from tablea";

            SqlDataReader dr = databind.GetExecuteReader(sql, false);
            DataTable Mydt = attribute.GetTableSchema();
            while (dr.Read())  //读取所有记录
            {
                CompareInfo Compare = CultureInfo.InvariantCulture.CompareInfo;  //设置indexof  不区分大小写
                #region 设置显示的标签进度
                SetLableText(string.Format("当前行:{0},剩余量:{1},完成比例:{2}%", currentIndex, maxSize - currentIndex,

                 (Convert.ToDecimal(currentIndex - minSize) / Convert.ToDecimal(maxSize - minSize) * 100).ToString("f0")));

                SetPbValue(currentIndex);
                #endregion
              
               ...

                    this.BeginInvoke(new MethodInvoker(delegate()
                    {

                        button1.Enabled = false;
                        textBox1.Text = str;
                    }));

                }
                currentIndex++;
            }

            attribute.BulkToDB(Mydt);

            this.BeginInvoke(new MethodInvoker(delegate()
            {

                button1.Enabled = true;
                textBox1.Text = "完成";
            }));

        }
        delegate void labDelegate(string str);

        private void SetLableText(string str)
        {

            if (label1.InvokeRequired)
            {
                Invoke(new labDelegate(SetLableText), new string[] { str });
            }

            else
            {
                label1.Text = str;
            }
        }
        delegate void pbDelegate(int value);

        private void SetPbValue(int value)
        {

            if (progressBar1.InvokeRequired)
            {

                Invoke(new pbDelegate(SetPbValue), new object[] { value });

            }

            else
            {

                progressBar1.Value = value;

            }

        }
    }
}