winform分页实现

using System;

using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Data; using System.Linq; using System.Text;

using System.Windows.Forms; using System.Data.Common; using System.Collections;

namespace Common {

public partial class WinFormPager : UserControl {

public event EventHandler PageChanged; //事件：控件的当前页码发生变更。 private int pageSize; private int curPage; private int pageCount; public WinFormPager() {

InitializeComponent(); }

private void WinFormPager_Load(object sender, EventArgs e) { }

///

get {

if (pageSize <= 0) {

pageSize = 10; }

return pageSize; } set {

pageSize = value;

} }

///

get {

if (curPage <= 0) {

curPage = 1; }

return curPage; } set {

curPage = value;

if (PageChanged != null) {

SafeRaise.Raise(PageChanged,null);//触发当件页码变更事件。 } } }

///

get {

if (RecordCount > 0) {

int pageCount = RecordCount / PageSize; if (RecordCount % PageSize == 0) {

pageCount = RecordCount / PageSize; }

else {

pageCount = RecordCount / PageSize + 1; }

return pageCount; } else {

return 0; } } set {

pageCount = value; } }

///

public int RecordCount {

get; set; }

///

get {

if (CurPage > 1) {

return CurPage - 1; }

return 1; } }

///

get {

if (CurPage < PageCount) {

return CurPage + 1; }

return PageCount; } }

private void btnFirstPage_Click(object sender, EventArgs e) {

this.CurPage = 1; }

private void btnLastPage_Click(object sender, EventArgs e) {

this.CurPage = this.PrevPage; }

private void btnNextPage_Click(object sender, EventArgs e) {

this.CurPage = this.NextPage; }

private void btnEndPage_Click(object sender, EventArgs e) {

this.CurPage = this.PageCount; }

private void txtPageNumber_TextChanged(object sender, EventArgs e) {

if (!Validator.IsNumeric(this.txtPageNumber.Text.Trim())) {

MessageBox.Show(\"请输入数字！\"); } }

private void btnJump_Click(object sender, EventArgs e) {

if (!Validator.IsNumeric(this.txtPageNumber.Text.Trim()))//验证输入是否为数字 {

MessageBox.Show(\"请输入数字！\"); } else

{

if (int.Parse(this.txtPageNumber.Text.Trim()) > 0) {

if (int.Parse(this.txtPageNumber.Text.Trim()) < this.PageCount) {

this.CurPage = int.Parse(this.txtPageNumber.Text.Trim()); } else {

this.CurPage = this.PageCount; } } else {

this.CurPage = 1; } } } } }

private void BindData() {

int rowCount = 0; pager.PageSize = 15;

DataGridView.DataSource = GetList(pager.CurPage, pager.PageSize, out rowCount); pager.RecordCount = rowCount;

pager.lbNumber.Text = string.Format(\"共{0}条记录，每页{1}条记录，共{2}页\pager.RecordCount.ToString(), pager.PageSize.ToString(), pager.PageCount.ToString()); }

private void Pager_PageChanged(object sender, EventArgs e) {

BindData(); //重新对DataGridView控件的数据源进行绑定。 }