C# winform 分页控件

针对目前手上c/s项目编写的分页控件,可能不适合所有人使用.

运行效果图:

该控件并没有使用VS自带的BindingNavigate、BindingSource控件, 使用控件时只需要传入 每页条数,总条数,当前页面索引即可,数据

源无需与分页控件绑关联.

 

代码:

public partial class Pager : UserControl
    {

        public event System.EventHandler PageIndexChanged;
        private const int DefaultPageSize = 10;
        //总页数
        private int mnPageCount = 0;
        //最大记录
        private int mnMaxRec = 0;
        //一页显示多少条
        private int mnPageSize = 10;
        //当前页面索引
        private int mnCurrentPageIndex = 1;
        private int recNo;

        public Pager()
        {
            InitializeComponent();
        }

        #region 公开的属性
        /// <summary>
        /// 获取总页数
        /// </summary>
        public int PageCount
        {
            get
            {
                int nPageCount = (RecordCount > 0) ? (int)Math.Ceiling((double)RecordCount / (double)PageSize) : 1;
                return nPageCount;
            }
        }
        /// <summary>
        /// 获取或设置当前页面索引
        /// </summary>
        public int CurrentPageIndex
        {
            get
            {
                if (mnCurrentPageIndex >= PageCount && PageCount > 0)
                {
                    return PageCount;
                }
                else if (mnCurrentPageIndex < 1)
                {
                    return 1;
                }
                return mnCurrentPageIndex;
            }
            set
            {
                int nPageIndex = value;
                if (nPageIndex < 1)
                {
                    nPageIndex = 1;
                }
                else if (nPageIndex > this.PageCount)
                {
                    nPageIndex = this.PageCount;
                }
                mnCurrentPageIndex = nPageIndex;
                Refresh();
            }

        }
        /// <summary>
        /// 获取或设置一页显示多少条数据
        /// </summary>
        public int PageSize
        {
            get
            {
                return mnPageSize;
            }
            set
            {
                int nPageSize = Math.Abs(value);
                mnPageSize = nPageSize == 0 ? DefaultPageSize : nPageSize;
                Refresh();
            }

        }
        /// <summary>
        /// 获取或设置总记录数
        /// </summary>
        public int RecordCount
        {
            get
            {
                return mnMaxRec;
            }
            set
            {
                mnMaxRec = value;
                Refresh();
            }
        }

        #endregion
        /// <summary>
        ///  应根据当前的CurrentPageIndex和pageCount设定按钮可用
        /// </summary>
        private void Refresh()
        {
            if (PageCount > 1)
            {
                toolFirstPage.Enabled = toolUpPage.Enabled = (CurrentPageIndex > 1);
                toolNextPage.Enabled = toolLastPage.Enabled = (CurrentPageIndex < PageCount);
            }
            else
            {
                toolFirstPage.Enabled = false;
                toolLastPage.Enabled = false;
                toolUpPage.Enabled = false;
                toolNextPage.Enabled = false;
            }

            toolCurrentPageIndex.Text = "第 " + CurrentPageIndex.ToString() + " 页";
            toollabMaxpage.Text = "共 " + RecordCount.ToString() + " 条记录 , 每页 " + PageSize + " 条";
            toolPageCount.Text = "共 " + PageCount.ToString() + " 页";
        }

        private void Pager_Load(object sender, EventArgs e)
        {
            Refresh();
        }

        private void toolFirstPage_Click(object sender, EventArgs e)
        {
            this.mnCurrentPageIndex = 1;
            Refresh();
            if (PageIndexChanged != null)//调用事件 
            {
                PageIndexChanged(sender, e);
            }
        }

        private void toolUpPage_Click(object sender, EventArgs e)
        {
            this.mnCurrentPageIndex = (CurrentPageIndex > 1) ? CurrentPageIndex - 1 : 1;
            Refresh();
            if (PageIndexChanged != null)//调用事件 
            {
                PageIndexChanged(sender, e);
            }
        }

        private void toolNextPage_Click(object sender, EventArgs e)
        {
            this.mnCurrentPageIndex = (PageCount > CurrentPageIndex) ? CurrentPageIndex + 1 : PageCount;
            Refresh();
            if (PageIndexChanged != null)//调用事件 
            {
                PageIndexChanged(sender, e);
            }
        }

        private void toolLastPage_Click(object sender, EventArgs e)
        {
            this.mnCurrentPageIndex = PageCount;
            Refresh();
            if (PageIndexChanged != null)//调用事件 
            {
                PageIndexChanged(sender, e);
            }
        }

        private void tooGo_Click(object sender, EventArgs e)
        {
            try
            {
                int JumpIndex = int.Parse(toolTextPageIndex.Text);
                if (JumpIndex <= PageCount)
                {
                    mnCurrentPageIndex = JumpIndex;
                    Refresh();
                    if (PageIndexChanged != null)//调用事件 
                    {
                        PageIndexChanged(sender, e);
                    }
                }
            }
            catch
            {
            }
        }

        //鼠标移至控件上方鼠标变手形状
        private void toolFirstPage_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Hand;
        }

        private void toolFirstPage_MouseLeave(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Default;
        }

        private void toolUpPage_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Hand;
        }

        private void toolUpPage_MouseLeave(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Default;
        }

        private void toolNextPage_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Hand;
        }

        private void toolNextPage_MouseLeave(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Default;
        }

        private void toolLastPage_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Hand;
        }

        private void toolLastPage_MouseLeave(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Default;
        }

        private void tooGo_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Hand;
        }

        private void tooGo_MouseLeave(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Default;
        }

 

调用:

this.pager1.PageSize = 每页显示数量;
this.pager1.CurrentPageIndex = 当前页;
this.pager1.RecordCount = 总条数;

并在PageIndexChanged事件中重新为控件指定页面索引.