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C# Winform DataGridView 公共分页实现

Demo的界面

我利用事件委托事件，仿http://www.cnblogs.com/huyong/写的公共分页用户控件

C#代码

#region 版权信息
/*---------------------------------------------------------------------*
// 项目名称：《Winform分页控件》
// 文件名： Pager.cs
// 描述：分页控件
// 作者：kwon yan
*----------------------------------------------------------------------*/
#endregion
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;
namespace HuishengFS.Controls
{
/**/
/// <summary>
/// 申明委托
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
public delegate int EventPagingHandler(EventPagingArg e);
/**/
/// <summary>
/// 分页控件呈现
/// </summary>
public partial class Pager : UserControl
{
public Pager()
{
InitializeComponent();
}
public event EventPagingHandler EventPaging;
/**/
/// <summary>
/// 每页显示记录数
/// </summary>
private int _pageSize = 50;
/**/
/// <summary>
/// 每页显示记录数
/// </summary>
public int PageSize
{
get { return _pageSize; }
set
{
_pageSize = value;
GetPageCount();
}
}
private int _nMax = 0;
/**/
/// <summary>
/// 总记录数
/// </summary>
public int NMax
{
get { return _nMax; }
set
{
_nMax = value;
GetPageCount();
}
}
private int _pageCount = 0;
/**/
/// <summary>
/// 页数=总记录数/每页显示记录数
/// </summary>
public int PageCount
{
get { return _pageCount; }
set { _pageCount = value; }
}
private int _pageCurrent = 0;
/**/
/// <summary>
/// 当前页号
/// </summary>
public int PageCurrent
{
get { return _pageCurrent; }
set { _pageCurrent = value; }
}
/// <summary>
/// 设置页面大小
/// </summary>
private void GetPageCount()
{
if (this.NMax > 0)
{
this.PageCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(this.NMax) / Convert.ToDouble(this.PageSize)));
lblPageCount.Text = " / " + PageCount.ToString();
//lblPageCount1.Text = "每页 "+PageSize .ToString ()+" 条，共 "+PageCount.ToString()+" 页";
lblPageCount1.Text = "Page no: " + PageSize.ToString() + ",Total:" + PageCount.ToString() + " pages";
}
else
{
this.PageCount = 0;
}
}
/**/
/// <summary>
/// 翻页控件数据绑定的方法关键是这步，都是调用这里
/// </summary>
public void Bind()
{
if (this.EventPaging != null)
{
this.NMax = this.EventPaging(new EventPagingArg(this.PageCurrent));
}
if (this.PageCurrent > this.PageCount)
{
this.PageCurrent = this.PageCount;
}
if (this.PageCount == 1)
{
this.PageCurrent = 1;
}
lblcurentpage.Text = PageCurrent.ToString();
//lblRecordCount.Text = "共有 " + NMax.ToString() + " 条记录";
lblRecordCount.Text = "Total: " + NMax.ToString() + " records";
btnPrev.Enabled = true;
btnFirst.Enabled = true;
btnLast.Enabled = true;
btnNext.Enabled = true;
if (this.PageCurrent == 1)
{
this.btnPrev.Enabled = false;
this.btnFirst.Enabled = false;
}
if (this.PageCurrent == this.PageCount)
{
this.btnLast.Enabled = false;
this.btnNext.Enabled = false;
}
if (this.NMax == 0)
{
btnNext.Enabled = false;
btnLast.Enabled = false;
btnFirst.Enabled = false;
btnPrev.Enabled = false;
}
cmbPagecount.Items.Clear();
for (int i = 1; i <= PageCount; i++)
cmbPagecount.Items.Add(i.ToString());
cmbPagecount.SelectedIndex = PageCurrent - 1;
}
/// <summary>
/// 首页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnFirst_Click(object sender, EventArgs e)
{
PageCurrent = 1;
this.Bind();
}
//上一页
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnPrev_Click(object sender, EventArgs e)
{
PageCurrent -= 1;
if (PageCurrent <= 0)
{
PageCurrent = 1;
}
this.Bind();
}
/// <summary>
/// 下一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnNext_Click(object sender, EventArgs e)
{
this.PageCurrent += 1;
if (PageCurrent > PageCount)
{
PageCurrent = PageCount;
}
this.Bind();
}
/// <summary>
/// 最后页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnLast_Click(object sender, EventArgs e)
{
PageCurrent = PageCount;
this.Bind();
}
/// <summary>
/// 转到新页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void btnGo_Click(object sender, EventArgs e)
{
if (Int32.TryParse(cmbPagecount.SelectedItem.ToString(), out _pageCurrent))
{
this.Bind();
}
}
}
/**/
/// <summary>
/// 自定义事件数据基类
/// </summary>
public class EventPagingArg : EventArgs
{
private int _intPageIndex;
public EventPagingArg(int PageIndex)
{
_intPageIndex = PageIndex;
}
}
}

#region  版权信息
/*---------------------------------------------------------------------*
// 项目  名称：《Winform分页控件》
// 文  件  名： Pager.cs
// 描      述： 分页控件
// 作      者：kwon yan
*----------------------------------------------------------------------*/
#endregion

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;

namespace HuishengFS.Controls
{
    /**/
    /// <summary>
    /// 申明委托
    /// </summary>
    /// <param name="e"></param>
    /// <returns></returns>
    public delegate int EventPagingHandler(EventPagingArg e);
    /**/
    /// <summary>
    /// 分页控件呈现
    /// </summary>
    public partial class Pager : UserControl
    {
        public Pager()
        {
            InitializeComponent();
        }
        public event EventPagingHandler EventPaging;
        /**/
        /// <summary>
        /// 每页显示记录数
        /// </summary>
        private int _pageSize = 50;
        /**/
        /// <summary>
        /// 每页显示记录数
        /// </summary>
        public int PageSize
        {
            get { return _pageSize; }
            set
            {
                _pageSize = value;
                GetPageCount();
            }
        }

        private int _nMax = 0;
        /**/
        /// <summary>
        /// 总记录数
        /// </summary>
        public int NMax
        {
            get { return _nMax; }
            set
            {
                _nMax = value;
                GetPageCount();
            }
        }

        private int _pageCount = 0;
        /**/
        /// <summary>
        /// 页数=总记录数/每页显示记录数
        /// </summary>
        public int PageCount
        {
            get { return _pageCount; }
            set { _pageCount = value; }
        }

        private int _pageCurrent = 0;
        /**/
        /// <summary>
        /// 当前页号
        /// </summary>
        public int PageCurrent
        {
            get { return _pageCurrent; }
            set { _pageCurrent = value; }
        }

        /// <summary>
        /// 设置页面大小
        /// </summary>
        private void GetPageCount()
        {
            if (this.NMax > 0)
            {
                this.PageCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(this.NMax) / Convert.ToDouble(this.PageSize)));
                lblPageCount.Text = " / " + PageCount.ToString();
                //lblPageCount1.Text = "每页 "+PageSize .ToString ()+" 条，共 "+PageCount.ToString()+" 页";
                lblPageCount1.Text = "Page no: " + PageSize.ToString() + ",Total:" + PageCount.ToString() + " pages";
            }
            else
            {
                this.PageCount = 0;
            }
        }

        /**/
        /// <summary>
        /// 翻页控件数据绑定的方法 关键是这步，都是调用这里
        /// </summary>
        public void Bind()
        {
            if (this.EventPaging != null)
            {
                this.NMax = this.EventPaging(new EventPagingArg(this.PageCurrent));
            }

            if (this.PageCurrent > this.PageCount)
            {
                this.PageCurrent = this.PageCount;
            }
            if (this.PageCount == 1)
            {
                this.PageCurrent = 1;
            }
            lblcurentpage.Text = PageCurrent.ToString();
            //lblRecordCount.Text = "共有 " + NMax.ToString() + " 条记录";
            lblRecordCount.Text = "Total: " + NMax.ToString() + " records";
          

            btnPrev.Enabled = true;
            btnFirst.Enabled = true;
            btnLast.Enabled = true;
            btnNext.Enabled = true;

            if (this.PageCurrent == 1)
            {
                this.btnPrev.Enabled = false;
                this.btnFirst.Enabled = false;
            }
      

            if (this.PageCurrent == this.PageCount)
            {
                this.btnLast.Enabled = false;
                this.btnNext.Enabled = false;
            }
     
            if (this.NMax == 0)
            {
                btnNext.Enabled = false;
                btnLast.Enabled = false;
                btnFirst.Enabled = false;
                btnPrev.Enabled = false;
            }
            cmbPagecount.Items.Clear();
            for (int i = 1; i <= PageCount; i++)
                cmbPagecount.Items.Add(i.ToString());
            cmbPagecount.SelectedIndex = PageCurrent - 1;
            
        }
        /// <summary>
        /// 首页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnFirst_Click(object sender, EventArgs e)
        {
            PageCurrent = 1;
            this.Bind();
        }
        //上一页
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnPrev_Click(object sender, EventArgs e)
        {
            PageCurrent -= 1;
            if (PageCurrent <= 0)
            {
                PageCurrent = 1;
            }
            this.Bind();
        }
        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnNext_Click(object sender, EventArgs e)
        {
            this.PageCurrent += 1;
            if (PageCurrent > PageCount)
            {
                PageCurrent = PageCount;
            }
            this.Bind();
        }
        /// <summary>
        /// 最后页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnLast_Click(object sender, EventArgs e)
        {
            PageCurrent = PageCount;
            this.Bind();
        }
        /// <summary>
        /// 转到新页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void btnGo_Click(object sender, EventArgs e)
        {
            if (Int32.TryParse(cmbPagecount.SelectedItem.ToString(), out _pageCurrent))
            {
                this.Bind();
            } 
        }
    }
    /**/
    /// <summary>
    /// 自定义事件数据基类
    /// </summary>
    public class EventPagingArg : EventArgs
    {
        private int _intPageIndex;
        public EventPagingArg(int PageIndex)
        {
            _intPageIndex = PageIndex;
        }
    }
}

前提准备

编写分页的SQL 语句和获取总数的SQL语句

Sql代码

--分页存储过程也可以SQL语句
--获取总数的语句我也不必多写了
if exists(select * from sysobjects where name='Proc_DgvPage')
drop proc name='Proc_DgvPage')
go
create proc name='Proc_DgvPage')
(
@keyword varchar(100), --关键字
@start varchar(5),
@end varchar(5)
)
as
begin
select sortTb.clientCode, sortTb.fileReference,sortTb.clientName1, sortTb.clientName2,
sortTb.dateOpen, sortTb.dateClose,sortTb.fileMaster,
sortTb.clientTel, sortTb.clientMobile, sortTb.clientFex,sortTb.companyName,sortTb.clientAddr, sortTb.propFlat, sortTb.propFloor,
sortTb.propBlock, sortTb.propBuilding, sortTb.propStree, sortTb.propDistrict, sortTb.propArea, sortTb.isFileClosed
from (
select row_number() over(order by c.clientCode) as sortNo,
c.clientCode, f.fileSubpervisor+''/''+f.fileCode+''/''+f.fileYear+''/''+f.fileIntro+''/''+f.fileHandler as fileReference,
c.clientLastName1+'' ''+c.clientFirstName1 as clientName1, c.clientLastName2+'' ''+c.clientFirstName2 as clientName2,f.dateOpen, f.dateClose,f.fileMaster,
c.clientTel, c.clientMobile, c.clientFex,c.companyName,c.clientAddr, f.propFlat, f.propFloor,
f.propBlock, f.propBuilding, f.propStree, f.propDistrict, f.propArea, f.isFileClosed
from clientInfo c left join clientFiles f on c.clientCode = f.fileCode
where 1=1
)
as sortTb
where sortNo between @start and @end
end
go

--分页存储过程 也可以SQL语句
--获取总数的语句 我也不必多写了
if exists(select * from sysobjects where name='Proc_DgvPage')
drop proc name='Proc_DgvPage')
go
create proc name='Proc_DgvPage')
(
 @keyword  varchar(100),	--关键字
 @start varchar(5),
 @end varchar(5)
)
as
begin

select sortTb.clientCode, sortTb.fileReference,sortTb.clientName1, sortTb.clientName2,
	sortTb.dateOpen, sortTb.dateClose,sortTb.fileMaster,
	sortTb.clientTel, sortTb.clientMobile, sortTb.clientFex,sortTb.companyName,sortTb.clientAddr, sortTb.propFlat, sortTb.propFloor,
	sortTb.propBlock, sortTb.propBuilding, sortTb.propStree, sortTb.propDistrict, sortTb.propArea, sortTb.isFileClosed 
	from (
		 select  row_number() over(order by c.clientCode) as sortNo,
		 c.clientCode, f.fileSubpervisor+''/''+f.fileCode+''/''+f.fileYear+''/''+f.fileIntro+''/''+f.fileHandler as fileReference,
         c.clientLastName1+'' ''+c.clientFirstName1 as clientName1, c.clientLastName2+'' ''+c.clientFirstName2 as clientName2,f.dateOpen, f.dateClose,f.fileMaster,
         c.clientTel, c.clientMobile, c.clientFex,c.companyName,c.clientAddr, f.propFlat, f.propFloor,
         f.propBlock, f.propBuilding, f.propStree, f.propDistrict, f.propArea, f.isFileClosed 
         from  clientInfo c left join  clientFiles f on c.clientCode = f.fileCode 
         where 1=1
) 
         as sortTb 
         where sortNo between @start and @end

end
go

在窗体调用：

C#代码

//定义变量
DataTable dtPage;
/// <summary>
/// GridViw数据绑定
/// </summary>
/// <returns></returns>
private int BindDgv()
{
//传入要取的第一条和最后一条
string start = (pager1.PageSize * (pager1.PageCurrent - 1) + 1).ToString();
string end = (pager1.PageSize * pager1.PageCurrent).ToString();
//数据源
dtPage = achieve.GetAll(Keyword, start, end);
//绑定分页控件
pager1.bindingSource1.DataSource = dtPage;
pager1.bindingNavigator1.BindingSource = pager1.bindingSource1;
//讲分页控件绑定DataGridView
dgvClients.DataSource = pager1.bindingSource1;
//返回总记录数
return achieve.GetToalCount(Keyword);
}
/// <summary>
/// 分页控件产生的事件
/// </summary>
private int pager1_EventPaging(HuishengFS.Controls.EventPagingArg e)
{
return DgvBind();
}
/// <summary>
/// 加载分页或许写在Load事件里面
/// </summary>
private void FrmPage_Shown(object sender, EventArgs e)
{
#region DataGridView与Pager控件绑定
this.pager1.PageCurrent = 1;//当前页为第一页
pager1.PageSize = 100;//页数
this.pager1.Bind();//绑定
#endregion
}

//定义变量
        DataTable dtPage;

        /// <summary>
        /// GridViw数据绑定
        /// </summary>
        /// <returns></returns>
        private int BindDgv()
        {
	    //传入要取的第一条和最后一条
            string start = (pager1.PageSize * (pager1.PageCurrent - 1) + 1).ToString();
            string end = (pager1.PageSize * pager1.PageCurrent).ToString();

            //数据源
            dtPage = achieve.GetAll(Keyword, start, end);
            //绑定分页控件
            pager1.bindingSource1.DataSource = dtPage;
            pager1.bindingNavigator1.BindingSource = pager1.bindingSource1;
            //讲分页控件绑定DataGridView
	    dgvClients.DataSource = pager1.bindingSource1;
 	    //返回总记录数
            return achieve.GetToalCount(Keyword);
        }
	/// <summary>
        /// 分页控件产生的事件
        /// </summary>
        private int pager1_EventPaging(HuishengFS.Controls.EventPagingArg e)
        {
            return DgvBind();
        }

	/// <summary>
        /// 加载分页 或许写在Load事件里面
        /// </summary>
        private void FrmPage_Shown(object sender, EventArgs e)
        {
            #region DataGridView与Pager控件绑定
            this.pager1.PageCurrent = 1;//当前页为第一页
            pager1.PageSize = 100;//页数
            this.pager1.Bind();//绑定
            #endregion
        }

UcControl.rar (7.5 KB)

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原文地址：https://www.cnblogs.com/Ruiky/p/2298194.html