winform自定义分页

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使用bindingNavigator和bindingSource1自定义分页组件，实现分页

/// <summary>    /// 委托    /// </summary>    /// <param name="e"></param>    /// <returns></returns>    public delegate int EventPagingHandler(EventPagingArg e);    public partial class pageControl : UserControl    {        public pageControl()        {            InitializeComponent();        }        public event EventPagingHandler EventPaging;        private object _sourceobj;//数据源        public object Sourceobj        {            get { return _sourceobj; }            set { _sourceobj = value; }        }        //每页记录数        private int _pageSize = 5;        public int PageSize        {            get { return _pageSize; }            set            {                _pageSize = value;                GetPageCount();            }        }        //总记录数        private int _PageTotalNum = 0;        public int PageTotalNum        {            get { return _PageTotalNum; }            set            {                _PageTotalNum = value;                GetPageCount();            }        }        //页数=总数/每页记录数        private int _pageCount = 0;        public int PageCount        {            get { return _pageCount; }            set { _pageCount = value; }        }        //当前页        private int _pageCurrent = 0;        public int PageCurrent        {            get { return _pageCurrent; }            set { _pageCurrent = value; }        }        //页数        private void GetPageCount()        {            if (this.PageTotalNum > 0)            {                this.PageCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(this.PageTotalNum) / Convert.ToDouble(this.PageSize)));            }            else            {                this.PageCount = 0;            }        }        //绑定源        public void Bind()        {            if (this.Sourceobj != null)            {                //绑定数据源                this.bindingSource1.DataSource = this.Sourceobj;                this.bindingNavigator1.BindingSource = this.bindingSource1;            }            this.FirstItem.Enabled = true;            this.PreviousItem.Enabled = true;            this.NextItem.Enabled = true;            this.LastItem.Enabled = true;            if (this.EventPaging != null)            {                //通过委托事件方法，触发引用窗体绑定方法获取                this.PageTotalNum = this.EventPaging(new EventPagingArg());            }            if (this.PageCurrent > this.PageTotalNum)            {                this.PageCurrent = this.PageTotalNum;            }            if (this.PageCount == 1)            {                this.PageCurrent = 1;            }            if (PageCurrent == 1)            {                this.FirstItem.Enabled = false;                this.PreviousItem.Enabled = false;            }            if (PageCurrent == PageCount)            {                this.NextItem.Enabled = false;                this.LastItem.Enabled = false;            }            if (this.PageTotalNum == 0)            {                this.FirstItem.Enabled = false;                this.PreviousItem.Enabled = false;                this.NextItem.Enabled = false;                this.LastItem.Enabled = false;            }            this.TextPositionItem.Text = PageCurrent.ToString();            this.TextPositionItem.Enabled = true;            this.labelCountItem.Text = "共 " + PageCount + " 页";            this.labelCountItem.Enabled = false;        }        //首页        private void FirstItem_Click(object sender, EventArgs e)        {            PageCurrent = 1;            this.Bind();        }        //上一页        private void PreviousItem_Click(object sender, EventArgs e)        {            PageCurrent--;            if (PageCurrent <= 0)            {                PageCurrent = 1;            }            this.Bind();        }        //下一页        private void NextItem_Click(object sender, EventArgs e)        {            this.PageCurrent++;            if (PageCurrent > PageCount)            {                PageCurrent = PageCount;            }            this.Bind();        }        //尾页        private void LastItem_Click(object sender, EventArgs e)        {            PageCurrent = PageCount;            this.Bind();        }    }    /// <summary>    /// 自定义事件数据基类(当前页数？)    /// </summary>    public class EventPagingArg : EventArgs    {        public EventPagingArg()        {        }    }

生成组件后，拖到使用的窗体

public partial class Form2 : Form    {        DataTable dtpage;        public Form2()        {            InitializeComponent();        }        private void Form2_Load(object sender, EventArgs e)        {            this.pageControl1.PageCurrent = 1;            pageControl1.PageSize = 10;            this.pageControl1.Bind();        }        /// <summary>        /// 分页控件事件        /// </summary>        /// <param name="e"></param>        /// <returns></returns>        private int pageControl1_EventPaging(EventPagingArg e)        {            return BindView();        }        //VIEW数据源绑定，并返回数据总条数        private int BindView()        {            dtpage = getdtByNum(pageControl1.PageCurrent, pageControl1.PageSize);            this.pageControl1.Sourceobj = dtpage;            this.dataGridView1.DataSource = dtpage;            return 100;        }        //每页源        public DataTable getdtByNum(int pageNum, int pageSize)        {            DataTable dt = new DataTable();            dt.Columns.Add("ID", typeof(string));            dt.Columns.Add("NAME", typeof(string));            for (int i = (pageNum - 1) * pageSize; i < pageSize * pageNum; i++)            {                DataRow dr = dt.NewRow();                dr["ID"] = i;                dr["NAME"] = "第" + i + "行";                dt.Rows.Add(dr);            }            return dt;        }    }

附代码实例下载：http://download.csdn.net/detail/sky08050025/9729815

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