笔者以SQLServer为例，写了个分析数据库的工具，下边的是主要代码：

Form1.cs

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.Collections;
using System.Threading;
using System.Data.SqlClient;
namespace Database_tracking
{
    public partial class Form1 : Form
    {
        private int ThreadState = 1;//Thread运行状态，0为运行，1停止 
        
        private string configPath = Application.StartupPath + "\\config.ini";
        /****操作INI文件开始***********/
        [System.Runtime.InteropServices.DllImport("kernel32")]

        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

        // 声明INI文件的读操作函数 GetPrivateProfileString()

        [System.Runtime.InteropServices.DllImport("kernel32")]

        private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);

        public string ReadValue(string section, string key)
        {

            // 每次从ini中读取多少字节

            System.Text.StringBuilder temp = new System.Text.StringBuilder(255);

            // section=配置节，key=键名，temp=上面，path=路径

            GetPrivateProfileString(section, key, "", temp, 255, configPath);

            return temp.ToString();

        }

        public void Writue(string section, string key, string value)
        {

            // section=配置节，key=键名，value=键值，path=路径

            WritePrivateProfileString(section, key, value, configPath);

        }
        /*****操作INI文件结束**********/
        
        public Form1()
        {
            InitializeComponent();
            this.FormClosing += new FormClosingEventHandler(Form1_Closing);
        }

        private void Form1_Closing(object sender, FormClosingEventArgs e)
        {
            if (this.ThreadState != 1)
            {
                MessageBox.Show("Please stop all the thread first.");
                e.Cancel = true;
            }
            else
            {

                for (int i = 0; i < mThread.Length; i++)
                {
                    if (mThread[i] != null)
                    {
                        if (mThread[i].IsAlive==true)
                        {
                            mThread[i].Abort();
                        }
                    }
                }

                this.Dispose();
            }
        }

        //private ArrayList mThread=new ArrayList();
        private Thread[] mThread;
        private void button2_Click(object sender, EventArgs e)
        {
            //开始执行
            if (button2.Text == "Start")
            {

                SetText("Starting...");
                ThreadState = 0;
                listView1.Items.Clear();
                cDataIndex = 0;
                lCount = 0;
                //启动线程
                SetObjectStatus(false, button1);
                SetObjectStatus(false, button3);

                if (mDataBase.Length <= int.Parse(MyModel.ThreadCount))
                {
                    MyModel.ThreadCount = mDataBase.Length.ToString();
                }
                ChangeValue("Stop");
                for (int i = 0; i < int.Parse(MyModel.ThreadCount); i++)
                {
                    mThread[i] = new Thread(ThreadWork);
                    mThread[i].IsBackground = true;
                    mThread[i].Name = i.ToString();
                    mThread[i].Start();
                }
            }
            else
            {
                ThreadState = 1;
                ChangeValue("Start");

            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Config s = new Config();
            s.ShowDialog();
        }

        pri