【NET】Winform分页控件初探

 public partial class WinFormPager : UserControl
     {
         const int PAGE_INDEX_START = ;
         /// <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()]
         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 == )
             {
                 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(, );
             this.lbMsg.Name = "lbMsg";
             this.lbMsg.Size = new System.Drawing.Size(, );
             this.lbMsg.TabIndex = ;
             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(, );
             this.llFirst.Name = "llFirst";
             this.llFirst.Size = new System.Drawing.Size(, );
             this.llFirst.TabIndex = ;
             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(, );
             this.llPrev.Name = "llPrev";
             this.llPrev.Size = new System.Drawing.Size(, );
             this.llPrev.TabIndex = ;
             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(, );
             this.llNext.Name = "llNext";
             this.llNext.Size = new System.Drawing.Size(, );
             this.llNext.TabIndex = ;
             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(, );
             this.llLast.Name = "llLast";
             this.llLast.Size = new System.Drawing.Size(, );
             this.llLast.TabIndex = ;
             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(, );
             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-);
         }

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

     }

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 = ;
            this.wfpPager.PageChanged += new WinFormPager.PageChangeDelegate(
                () =>
                {
                    DataBind();
                }
            );
        }
        public Action<ListViewExtendPager> dataBindAction;
        private void ListViewExtendPager_Load(object sender, EventArgs e)
        {
            this.wfpPager.CurrentPage = ;
            DataBind();
        }

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