using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;namespace WinMilkProject.Project
{public partial class Form1 : Form{Thread myThread;public int frequency = 0;//更新时间频率public static bool isUse = false;//是否停止更新public static string statusInfo = string.Empty;//状态private delegate void myDelegate(DataTable dt);//定义委托public Form1(){InitializeComponent();label2.Text = "更新频率为:" + (trackBar1.Value / 1000).ToString() + "秒";}private void Form1_Load(object sender, EventArgs e){myThread = new Thread(startFillDv);//实例化线程
            myThread.Start();}private void startFillDv(){while (true){if (isUse){statusInfo = "正在实时更新数据......";      DataTable dt = CommonEx.GetDataTableEx("select * from table1");//自己写的数据封装类 能够返回一个datatable
                    Grid(dt);Thread.Sleep(frequency);}else{statusInfo = "停止更新!";}}}private void Grid(DataTable dt){if (this.InvokeRequired){this.Invoke(new myDelegate(Grid), new object[] { dt });}else{try{this.dataGridView1.DataSource = null;this.dataGridView1.DataSource = dt;dt = null;statusInfo = "更新完成!";}catch {}}}private void Form1_FormClosed(object sender, FormClosedEventArgs e){if (this.myThread.IsAlive){this.myThread.Abort();//结束线程
            }}private void timer1_Tick(object sender, EventArgs e){label1.Text = statusInfo;frequency = trackBar1.Value;if (statusInfo.Trim() == "正在实时更新数据......"){pictureBox1.Visible = true;}else{pictureBox1.Visible = false;}}private void checkBox1_CheckedChanged(object sender, EventArgs e){if (checkBox1.Checked){isUse = true;}else{isUse = false;}}private void trackBar1_Scroll(object sender, EventArgs e){label2.Text = "更新频率为:" + (trackBar1.Value / 1000).ToString() + "秒";}}
}

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.Threading;namespace WindowsFormsApplication1
{public partial class FormMain : Form{Test.Model.queue queue = null;Test.BLL.queue queueBLL = new Test.BLL.queue();Test.BLL.ChangeDB changeDbBLL = new Test.BLL.ChangeDB();Thread myThread;public int frequency = 0;//更新时间频率public static bool isUse = false;//是否停止更新public static string statusInfo = string.Empty;//状态// private delegate void myDelegate(DataTable dt);//定义委托private delegate void myDelegate(int id);//定义委托public FormMain(){InitializeComponent();label2.Text = "更新频率为:" + (trackBar1.Value / 1000).ToString() + "秒";this.dataGridView1.DataSource = queueBLL.GetAllList();this.dataGridView1.DataMember = "ds";}private void FormMain_Load(object sender, EventArgs e){myThread = new Thread(startFillDv);//实例化线程
            myThread.Start();}private void startFillDv(){while (true){if (isUse){//statusInfo = "正在实时更新数据......";//DataTable dt = queueBLL.GetAllList().Tables[0];//自己写的数据封装类 能够返回一个datatable
                    Grid(Test.BLL.ModifStatic.Id);Thread.Sleep(frequency);}else{//statusInfo = "停止更新!";
                }}}private void Grid(int id){if (this.InvokeRequired){this.Invoke(new myDelegate(Grid), new object[] { id });}else{try{//修改改id对应的行for (int i = 0; i < this.dataGridView1.Rows.Count; i++){if (Convert.ToInt32(this.dataGridView1.Rows[i].Cells[0].Value) == id){queue = queueBLL.GetModel(id);this.dataGridView1.Rows[i].Cells[1].Value = queue.remainNum;}}// statusInfo = "更新完成!";
                }catch{}}}private void FormMain_FormClosed(object sender, FormClosedEventArgs e){if (this.myThread.IsAlive){this.myThread.Abort();//结束线程
            }}private void checkBox1_CheckedChanged(object sender, EventArgs e){if (checkBox1.Checked){isUse = true;}else{isUse = false;}}Thread th = null;private void buttonModif_Click(object sender, EventArgs e){th = new Thread(new ThreadStart(changeDbBLL.DBAdd));th.Start();}//private void Grid(DataTable dt)//{//    if (this.InvokeRequired)//    {//        this.Invoke(new myDelegate(Grid), new object[] { dt });//    }//    else//    {//        try//        {//            this.dataGridView1.DataSource = null;//            this.dataGridView1.DataSource = dt;//            this.dataGridView1.DataMember = "ds";//            dt = null;//            statusInfo = "更新完成!";//        }//        catch//        {//        }//    }//}private void trackBar1_Scroll_1(object sender, EventArgs e){label2.Text = "更新频率为:" + trackBar1.Value.ToString() + "秒";}private void timer1_Tick(object sender, EventArgs e){label1.Text = statusInfo;frequency = trackBar1.Value;if (statusInfo.Trim() == "正在实时更新数据......"){pictureBox1.Visible = true;}else{pictureBox1.Visible = false;}}}}