winform里dataGridView分頁代碼，access數據庫

 

winform里dataGridView分頁，默認dataGridView是不分頁的和webform里不一樣，webform中GridView自帶自帶了分頁。

現在c/s的程序很多時候也需要webform的分頁樣式，所以就寫了下面的分頁，使用了access數據庫。

原理就是讀取數據存入datatable中，然后根據不同的頁來顯示當頁數據。這樣有個缺點就是數據量太大時會影響顯示速度。sql server數據庫時可以借助數據庫來實現只讀取當頁數據來顯示，效率會高一些。

所用環境：vs.net2010   access2003

form中控件如下圖:

控件分別是:dataGridView1,button1,button3,button2,button4,textBox1,button5,label2,label3,label4,label5,label6,label7

分頁效果如下圖：

代碼如下：

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;

namespace test
{
    public partial class Form3 : Form
    {
        public int pageSize = 10;      //每頁記錄數
        public int recordCount = 0;    //總記錄數
        public int pageCount = 0;      //總頁數
        public int currentPage = 0;    //當前頁

        public DataTable dtSource = new DataTable();


        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Load(object sender, EventArgs e)
        {
            //數據庫操作獲得DataTable
            string sql = "select ID,title from info";

            DB db = new DB();

            dtSource = db.GetDt(sql);
            //

            recordCount = dtSource.Rows.Count;

            pageCount = (recordCount / pageSize);

            if ((recordCount % pageSize) > 0)
            {
                pageCount++;
            }

            //默認第一頁
            currentPage = 1;

            LoadPage();
        }

        private void LoadPage()
        {
            //
            if (currentPage < 1) currentPage = 1;
            if (currentPage > pageCount) currentPage = pageCount;
            //

            int beginRecord;
            int endRecord;
            DataTable dtTemp;

            dtTemp = dtSource.Clone();

            beginRecord = pageSize * (currentPage - 1);
            if (currentPage == 1) beginRecord = 0;
            endRecord = pageSize * currentPage;
            if (currentPage == pageCount) endRecord = recordCount;

            for (int i = beginRecord; i < endRecord; i++)
            {
                dtTemp.ImportRow(dtSource.Rows[i]);
            }

            dataGridView1.DataSource = dtTemp;

            label3.Text = currentPage.ToString();
            label5.Text = pageCount.ToString();
            label7.Text = recordCount.ToString();
            textBox1.Text = currentPage.ToString();
        }


        private void button1_Click(object sender, EventArgs e)
        {
            currentPage = 1;
            LoadPage();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            currentPage++;
            LoadPage();
        }
        private void button3_Click(object sender, EventArgs e)
        {
            currentPage--;
            LoadPage();
        }
        private void button4_Click(object sender, EventArgs e)
        {
            currentPage = pageCount;
            LoadPage();
        }

        private void button5_Click(object sender, EventArgs e)
        {
            int pageN = Convert.ToInt32(textBox1.Text);
            currentPage = pageN;
            LoadPage();
        }



    }
}

數據庫access2003