一个DataGridView的分页代码

//from:http://www.ohuo.net/?p=83

using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Windows.Forms; namespace Jav_Tool {     public class ClsDataGridViewPage     {         private int _RowsPerPage;   //每页记录数         private int _TotalPage;     //总页数         private int _curPage = 0;     //当前页数         private DataGridView _DataGridView; //要分页的DataGridView         private DataView _dv;       //与需要分页显示的的DataView         public int RowsPerPage { get { return _RowsPerPage; } set { _RowsPerPage = value; } }      //获取与设置每页记录数         public int TotalPage { get { return _TotalPage; } }                             //获取总页数         public int curPage { get { return _curPage; } set { _curPage = value; } }                  //获取与设置当前页数         public DataGridView GetDataGridView { set { _DataGridView = value; } }    //设置需要分页的GetDataGridView         public DataView SetDataView { set { _dv = value; } }           public ClsDataGridViewPage()         {                    }         public ClsDataGridViewPage(DataGridView datagridview, DataView dv, int RowsPerPage)         {             _DataGridView = datagridview;             _dv = dv;             _RowsPerPage = RowsPerPage;         }         public void Paging()                //开始分页啦         {   //首先判断DataView中的记录数是否足够形成多页，             //如果不能，那么就只有一页，且DataGridView需要显示的记录等同于“最后一页”的记录             if (_dv.Count <= _RowsPerPage)             {                 _TotalPage = 1;                 GoLastPage();                 return;             }             if (_dv.Count % _RowsPerPage == 0)             {                 _TotalPage = (int)(_dv.Count / _RowsPerPage);             }             else             {                 _TotalPage = (int)(_dv.Count / _RowsPerPage) + 1;             }             GoFirstPage();         }         //到第一页         public void GoFirstPage()         {             if (_TotalPage == 1)             {                 GoLastPage();                 return;             }             _curPage = 0;             GoNoPage(_curPage);         }         public void GoNextPage()         {             _curPage += 1;             if (_curPage > _TotalPage - 1)             {                 _curPage = _TotalPage - 1;                 return;             }             if (_curPage == _TotalPage - 1)             {                 GoLastPage();                 return;             }             GoNoPage(_curPage);         }         public void GoPrevPage()         {//’防止不合法的当前页号             _curPage -= 1;             if (_curPage < 0)             {                 _curPage = 0;                 return;             }         }         //到最后一页         public void GoLastPage()         {             _curPage = _TotalPage - 1;             int i;             DataTable dt;             dt = _dv.ToTable().Clone();             for (i = (_TotalPage - 1) * _RowsPerPage; i <= _dv.Count - 1; i++)             {                 DataRow dr = dt.NewRow();                 dr.ItemArray = _dv.ToTable().Rows[i].ItemArray;                 dt.Rows.Add(dr);             }             _DataGridView.DataSource = dt;         }         public void GoNoPage(int PageNo)         {             _curPage = PageNo;             if (_curPage < 0)             {//防止不合法的页号                 return;             }             //防止页号溢出             if (_curPage >= _TotalPage)             {   //页号超出上限                 return;             }             if (_curPage == _TotalPage - 1)             {                 //如果页号是最后一页，就显示最后一页                 GoLastPage();                 return;             }             DataTable dt;             dt = _dv.ToTable().Clone();             int i;             for (i = PageNo * _RowsPerPage; i <= (PageNo + 1) * _RowsPerPage - 1; i++)             {                 DataRow dr = dt.NewRow();                 dr.ItemArray = _dv.ToTable().Rows[i].ItemArray;                 dt.Rows.Add(dr);             }             _DataGridView.DataSource = dt;         }     } }

注意：要想让DataGridView分页显示记录，最关键的需要设置的分页类的三个属性是： SetDataGridView  该属性用于设置窗体上要分页显示记录的DataGridView控件 RowsPerPage 该属性用来设置每页需要显示的记录数 SetDataView 该属性用来设置需要在DataGridView空间上显示的DataView 可以灵活地设置这三个属性，以满足不同的DataGridView对不同的DataView进行指定每页记录数的显示（是不是很方便？）现在举例如何设置这三个属性： 先获得数据源dt             DataTable dt = DataBiz.GetGmsystemReplyInfo(userid,  out strErrmsg);             ClsDataGridViewPage dgvPage = new ClsDataGridViewPage();             dgvPage.GetDataGridView = this.dataGridView1;    //需要分页的是 dataGridView1             dgvPage.RowsPerPage = 10; //每页显示10条记录             //获取需要分页显示的DataView                         dgvPage.SetDataView = dt.DefaultView;             dgvPage.Paging();    //开始分页 调用分页类的Paging 方法

要看第一页，调用分页类的GoFirstPage方法 要看下一页，调用 GoNextPage方法 要看前一页，调用GoPrevPage方法 要看最后一页，调用GoLastPage方法 要看指定页号的页，调用 GoNoPage方法 只要灵活使用好了这个类，你的DataGridView控件的分页功能绝不成问题。而且随时都能了解当前到了第几页（curPage()+1），一共有多少页（TotalPage()）