winform ListView和DataGridView实现分页

2021-02-15 00:19

阅读：586

标签：text tool pac rms 页面 dap gpo client orm

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用到的控件有

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code:

listviewPaging

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;

namespace DataGridViewPage1
{
    public partial class ListViewPaging : Form
    {
        int pageSize = 0;     //每页显示行数
        int nMax = 0;         //总记录数
        int pageCount = 0;    //页数＝总记录数/每页显示行数
        int pageCurrent = 0;   //当前页号
        int nCurrent = 0;      //当前记录行
        DataSet ds = new DataSet();
        DataTable dtInfo = new DataTable();

        public ListViewPaging()
        {
            InitializeComponent();
            BindData();
        }

        void BindData()
        {

            string strConn = "SERVER=.;DATABASE=WL_JLB;UID=sa;PWD=123456";   //数据库连接字符串
            SqlConnection conn = new SqlConnection(strConn);
            conn.Open();
            string strSql = "SELECT * FROM dbo.WlcSys_Model";
            SqlDataAdapter sda = new SqlDataAdapter(strSql, conn);
            sda.Fill(ds, "ds");
            conn.Close();
            dtInfo = ds.Tables[0];
            InitDataSet();

        }

        private void InitDataSet()
        {
            pageSize = 20;      //设置页面行数
            nMax = dtInfo.Rows.Count;

            pageCount = (nMax / pageSize);    //计算出总页数

            if ((nMax % pageSize) > 0) pageCount++;

            pageCurrent = 1;    //当前页数从1开始
            nCurrent = 0;       //当前记录数从0开始

            LoadData();
        }

        private void LoadData()
        {
            int nStartPos = 0;   //当前页面开始记录行
            int nEndPos = 0;     //当前页面结束记录行

            DataTable dtTemp = dtInfo.Clone();   //克隆DataTable结构框架

            if (pageCurrent == pageCount)
                nEndPos = nMax;
            else
                nEndPos = pageSize * pageCurrent;

            nStartPos = nCurrent;

            //lblPageCount2.Text = pageCount.ToString();
            txtCurrentPage.Text = Convert.ToString(pageCurrent);
            lblPageCount.Text = pageCount.ToString();

            this.listView1.Items.Clear();
            //从元数据源复制记录行
            for (int i = nStartPos; i  pageCount)
                {
                    MessageBox.Show("已经是最后一页，请点击“上一页”查看！");
                    pageCurrent--;
                    return;
                }
                else
                {
                    nCurrent = pageSize * (pageCurrent - 1);
                }
                LoadData();
            }
            if (e.ClickedItem.Text == "go")
            {
                int a = 0;
                int.TryParse(txtCurrentPage.Text, out a);
                if (a == 0)
                {
                    MessageBox.Show("只能输入正整数!");
                    return;
                }
                //pageCurrent = int.Parse(txtCurrentPage.Text);
                pageCurrent = a;
                if (pageCurrent  pageCount)
                {
                    MessageBox.Show("已经是最后一页，请点击“上一页”查看！");
                    return;
                }
                nCurrent = pageSize * (pageCurrent - 1);
                LoadData();
            }
        }
    }
}

datagridviewpaging

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;

namespace DataGridViewPage1
{
    public partial class Form1 : Form
    {
        int pageSize = 0;     //每页显示行数
        int nMax = 0;         //总记录数
        int pageCount = 0;    //页数＝总记录数/每页显示行数
        int pageCurrent = 0;   //当前页号
        int nCurrent = 0;      //当前记录行
        DataSet ds = new DataSet();
        DataTable dtInfo = new DataTable();

        public Form1()
        {
            InitializeComponent();
            BindData();
        }


        void BindData()
        {

            string strConn = "SERVER=.;DATABASE=WL_JLB;UID=sa;PWD=123456";   //数据库连接字符串
            SqlConnection conn = new SqlConnection(strConn);
            conn.Open();
            string strSql = "SELECT * FROM dbo.WlcSys_Model";
            SqlDataAdapter sda = new SqlDataAdapter(strSql, conn);
            sda.Fill(ds, "ds");
            conn.Close();
            dtInfo = ds.Tables[0];
            InitDataSet();

        }

        private void InitDataSet()
        {
            pageSize = 20;      //设置页面行数
            nMax = dtInfo.Rows.Count;

            pageCount = (nMax / pageSize);    //计算出总页数

            if ((nMax % pageSize) > 0) pageCount++;

            pageCurrent = 1;    //当前页数从1开始
            nCurrent = 0;       //当前记录数从0开始

            LoadData();
        }

        private void LoadData()
        {
            int nStartPos = 0;   //当前页面开始记录行
            int nEndPos = 0;     //当前页面结束记录行

            DataTable dtTemp = dtInfo.Clone();   //克隆DataTable结构框架

            if (pageCurrent == pageCount)
                nEndPos = nMax;
            else
                nEndPos = pageSize * pageCurrent;

            nStartPos = nCurrent;

            //lblPageCount2.Text = pageCount.ToString();
            txtCurrentPage.Text = Convert.ToString(pageCurrent);
            lblPageCount.Text = pageCount.ToString();

            //从元数据源复制记录行
            for (int i = nStartPos; i  pageCount)
                {
                    MessageBox.Show("已经是最后一页，请点击“上一页”查看！");
                    pageCurrent--;
                    return;
                }
                else
                {
                    nCurrent = pageSize * (pageCurrent - 1);
                }
                LoadData();
            }
            if (e.ClickedItem.Text == "go")
            {
               int a=0;
               int.TryParse(txtCurrentPage.Text, out a);
               if (a == 0)
               {
                   MessageBox.Show("只能输入正整数!");
                   return;  
               }
                //pageCurrent = int.Parse(txtCurrentPage.Text);
                pageCurrent = a;
                if (pageCurrent  pageCount)
                {
                    MessageBox.Show("已经是最后一页，请点击“上一页”查看！");
                    return;
                }
                nCurrent = pageSize * (pageCurrent - 1);
                LoadData();
            }
        }
    }
}

winform ListView和DataGridView实现分页

标签：text tool pac rms 页面 dap gpo client orm

原文地址：https://www.cnblogs.com/zhaooyw/p/8443676.html

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winform ListView和DataGridView实现分页

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