【NET】Winform分页控件初探

public partial class WinFormPager : UserControl
    {
        const int PAGE_INDEX_START = 1;
        /// <summary>
        /// 当前页 
        /// </summary>
        public int CurrentPage
        {
            get;
            set;
        }
        /// <summary>
        /// 每页显示条数
        /// </summary>
        [Description("每页显示条数"), Category("分页设置"), DefaultValue(10)]
        public int PageSize
        {
            get;
            set;
        }
        /// <summary>
        /// 总共多少页 
        /// </summary>
        public int PageTotal
        {
            get;
            set;
        }
        int recordCount;
        public int RecordCount
        {
            get {
                return recordCount;
            }
            set {
                recordCount = value;
                SetBtnPrePageAndBtnNextPage();
            }
        }

        private Label lbMsg;
        private LinkLabel llFirst;
        private LinkLabel llPrev;
        private LinkLabel llNext;
        private LinkLabel llLast;//按钮间距离

        public delegate void PageChangeDelegate();
        /// <summary>
        /// 当前页改变时发生的事件
        /// </summary>
        [Description("当前页改变时发生的事件"), Category("分页设置")]
        public event PageChangeDelegate PageChanged;
        public WinFormPager()
        {
            InitializeComponent();
        }
        
        /// <summary>
        /// 设置上一页、下一页是否可用以及当前页按钮字体颜色
        /// </summary>
        public void SetBtnPrePageAndBtnNextPage()
        {
            
            if (recordCount == 0)
            {
                llFirst.Enabled = llPrev.Enabled = llNext.Enabled = llLast.Enabled = false;
            }
            else
            {
                PageTotal = Convert.ToInt32(Math.Ceiling(RecordCount * 1.0 / PageSize));//总共多少页  
                if (CurrentPage == PAGE_INDEX_START)
                {
                    llFirst.Enabled = llPrev.Enabled = false;
                }
                else
                {
                    llFirst.Enabled = llPrev.Enabled = true;
                }

                if (CurrentPage == PageTotal)
                {
                    llNext.Enabled = llLast.Enabled = false;
                }
                else
                {
                    llNext.Enabled = llLast.Enabled = true;
                }
            }
            this.lbMsg.Text = string.Format(this.lbMsg.Tag.ToString(), RecordCount, PageSize, CurrentPage, PageTotal);
        }


        private void InitializeComponent()
        {
            this.lbMsg = new System.Windows.Forms.Label();
            this.llFirst = new System.Windows.Forms.LinkLabel();
            this.llPrev = new System.Windows.Forms.LinkLabel();
            this.llNext = new System.Windows.Forms.LinkLabel();
            this.llLast = new System.Windows.Forms.LinkLabel();
            this.SuspendLayout();
            // 
            // lbMsg
            // 
            this.lbMsg.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
            this.lbMsg.AutoSize = true;
            this.lbMsg.Location = new System.Drawing.Point(12, 9);
            this.lbMsg.Name = "lbMsg";
            this.lbMsg.Size = new System.Drawing.Size(215, 19);
            this.lbMsg.TabIndex = 0;
            this.lbMsg.Tag = "共{0}条 {1}条/页 当前第{2}页/{3}页";
            this.lbMsg.Text = "共{0}条 {1}条/页 当前第{2}页/{3}页";
            this.lbMsg.UseCompatibleTextRendering = true;
            // 
            // llFirst
            // 
            this.llFirst.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
            this.llFirst.AutoSize = true;
            this.llFirst.Location = new System.Drawing.Point(279, 9);
            this.llFirst.Name = "llFirst";
            this.llFirst.Size = new System.Drawing.Size(29, 12);
            this.llFirst.TabIndex = 1;
            this.llFirst.TabStop = true;
            this.llFirst.Text = "首页";
            this.llFirst.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llFirst_LinkClicked);
            // 
            // llPrev
            // 
            this.llPrev.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
            this.llPrev.AutoSize = true;
            this.llPrev.Location = new System.Drawing.Point(314, 9);
            this.llPrev.Name = "llPrev";
            this.llPrev.Size = new System.Drawing.Size(41, 12);
            this.llPrev.TabIndex = 2;
            this.llPrev.TabStop = true;
            this.llPrev.Text = "上一页";
            this.llPrev.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llPrev_LinkClicked);
            // 
            // llNext
            // 
            this.llNext.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
            this.llNext.AutoSize = true;
            this.llNext.Location = new System.Drawing.Point(361, 9);
            this.llNext.Name = "llNext";
            this.llNext.Size = new System.Drawing.Size(41, 12);
            this.llNext.TabIndex = 3;
            this.llNext.TabStop = true;
            this.llNext.Text = "下一页";
            this.llNext.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llNext_LinkClicked);
            // 
            // llLast
            // 
            this.llLast.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
            this.llLast.AutoSize = true;
            this.llLast.Location = new System.Drawing.Point(408, 9);
            this.llLast.Name = "llLast";
            this.llLast.Size = new System.Drawing.Size(29, 12);
            this.llLast.TabIndex = 4;
            this.llLast.TabStop = true;
            this.llLast.Text = "末页";
            this.llLast.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llLast_LinkClicked);
            // 
            // WinFormPager
            // 
            this.Controls.Add(this.llLast);
            this.Controls.Add(this.llNext);
            this.Controls.Add(this.llPrev);
            this.Controls.Add(this.llFirst);
            this.Controls.Add(this.lbMsg);
            this.Name = "WinFormPager";
            this.Size = new System.Drawing.Size(468, 30);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        private void llFirst_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            PageAction(PAGE_INDEX_START);
            SetBtnPrePageAndBtnNextPage();
        }

        public void PageAction(int pageNumOperation) {
            CurrentPage = pageNumOperation;
            if (CurrentPage < PAGE_INDEX_START)
            {
                CurrentPage = PAGE_INDEX_START;
            }
            if (CurrentPage > PageTotal) {
                CurrentPage = PageTotal;
            }
            
            if (PageChanged != null)
            {
                PageChanged();
            }
        }

        private void llLast_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            PageAction(PageTotal);
        }

        private void llPrev_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            PageAction(CurrentPage-1);
        }

        private void llNext_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            PageAction(CurrentPage + 1);
        }

    }

调用

public ListViewExtendPager()
        {//分页List 控件(此控件包含分页控件)构造函数
            InitializeComponent();
            this.wfpPager.PageSize = 15;
            this.wfpPager.PageChanged += new WinFormPager.PageChangeDelegate(
                () =>
                {
                    DataBind();
                }
            );
        }
        public Action<ListViewExtendPager> dataBindAction;
        private void ListViewExtendPager_Load(object sender, EventArgs e)
        {
            this.wfpPager.CurrentPage = 1;
            DataBind();
        }

        private void DataBind() {
            if (dataBindAction != null) {
                dataBindAction(this);
            }
        }