如何实现DataGridView实时更新数据【Z】

原帖：http://bbs.bccn.net/thread-341646-1-1.html

最近一直在研究调度 涉及到用调度实时给客户发送短信的功能 其中就有用到实时更新的显示发送状态的 当然 今天不是以QUARTE为主

主要控件有 datagridview checkbox picturebox trackBar1 label
datagridview
:实时显示数据
checkbox ：指示是否停止更新
picturebox :显示更新状态
trackBar1
:设置更新时间频率
label :显示一些相关信息
有时候我们希望能够实时的去更新一些信息 大家可能会想到Timer 但是这样做会使界面很卡
影响效果和交互性 怎样才能让它不卡又能实时更新呢
线程
主要代码如下

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;
            }
        }





    }

}