winform ListView和DataGridView实现分页
Posted zhenzhen78
tags:
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用到的控件有
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 < nEndPos; i++)
{
dtTemp.ImportRow(dtInfo.Rows[i]);
//dtInfo.Rows[i].ItemArray[0]
//14
//dtInfo.Rows[i].ItemArray[2]
//"在线对应参数设置"
var lvi = new ListViewItem(new string[] { dtInfo.Rows[i].ItemArray[0].ToString(),
dtInfo.Rows[i].ItemArray[2].ToString()
});
listView1.Items.Add(lvi);
nCurrent++;
}
bdsInfo.DataSource = dtTemp;
bdnInfo.BindingSource = bdsInfo;
//listView1.DataSource = bdsInfo;
}
private void bdnInfo_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (e.ClickedItem.Text == "关闭")
{
this.Close();
}
if (e.ClickedItem.Text == "上一页")
{
pageCurrent--;
if (pageCurrent <= 0)
{
MessageBox.Show("已经是第一页，请点击“下一页”查看！");
pageCurrent++;
return;
}
else
{
nCurrent = pageSize * (pageCurrent - 1);
}
LoadData();
}
if (e.ClickedItem.Text == "下一页")
{
pageCurrent++;
if (pageCurrent > 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 <= 0)
{
MessageBox.Show("已经是第一页，请点击“下一页”查看！");
return;
}
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 < nEndPos; i++)
{
dtTemp.ImportRow(dtInfo.Rows[i]);
nCurrent++;
}
bdsInfo.DataSource = dtTemp;
bdnInfo.BindingSource = bdsInfo;
dgvInfo.DataSource = bdsInfo;
}
private void bdnInfo_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (e.ClickedItem.Text == "关闭")
{
this.Close();
}
if (e.ClickedItem.Text == "上一页")
{
pageCurrent--;
if (pageCurrent <= 0)
{
MessageBox.Show("已经是第一页，请点击“下一页”查看！");
pageCurrent++;
return;
}
else
{
nCurrent = pageSize * (pageCurrent - 1);
}
LoadData();
}
if (e.ClickedItem.Text == "下一页")
{
pageCurrent++;
if (pageCurrent > 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 <= 0)
{
MessageBox.Show("已经是第一页，请点击“下一页”查看！");
return;
}
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();
}
}
}
}
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