Winform 分页

1.图列展示

2.分页控件代码

Paging.Designer.cs

 partial class Paging
    {
        /// <summary> 
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary> 
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region 组件设计器生成的代码

        /// <summary> 
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Paging));
            this.bindingNavigator = new System.Windows.Forms.BindingNavigator(this.components);
            this.btnFirst = new System.Windows.Forms.ToolStripButton();
            this.btnPrev = new System.Windows.Forms.ToolStripButton();
            this.btnNext = new System.Windows.Forms.ToolStripButton();
            this.btnLast = new System.Windows.Forms.ToolStripButton();
            this.toolStripLabel6 = new System.Windows.Forms.ToolStripLabel();
            this.toolStripLabel4 = new System.Windows.Forms.ToolStripLabel();
            this.txtCurrentPage = new System.Windows.Forms.ToolStripTextBox();
            this.toolStripLabel1 = new System.Windows.Forms.ToolStripLabel();
            this.btnGo = new System.Windows.Forms.ToolStripButton();
            this.toolStripLabel5 = new System.Windows.Forms.ToolStripLabel();
            this.toolStripLabel2 = new System.Windows.Forms.ToolStripLabel();
            this.lblPageCount = new System.Windows.Forms.ToolStripLabel();
            this.toolStripLabel3 = new System.Windows.Forms.ToolStripLabel();
            this.lblMaxPage = new System.Windows.Forms.ToolStripLabel();
            ((System.ComponentModel.ISupportInitialize)(this.bindingNavigator)).BeginInit();
            this.bindingNavigator.SuspendLayout();
            this.SuspendLayout();
            // 
            // bindingNavigator
            // 
            this.bindingNavigator.AddNewItem = null;
            this.bindingNavigator.CountItem = null;
            this.bindingNavigator.DeleteItem = null;
            this.bindingNavigator.Dock = System.Windows.Forms.DockStyle.Bottom;
            this.bindingNavigator.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.btnFirst,
            this.btnPrev,
            this.btnNext,
            this.btnLast,
            this.toolStripLabel6,
            this.toolStripLabel4,
            this.txtCurrentPage,
            this.toolStripLabel1,
            this.btnGo,
            this.toolStripLabel5,
            this.toolStripLabel2,
            this.lblPageCount,
            this.toolStripLabel3,
            this.lblMaxPage});
            this.bindingNavigator.Location = new System.Drawing.Point(0, 3);
            this.bindingNavigator.MoveFirstItem = null;
            this.bindingNavigator.MoveLastItem = null;
            this.bindingNavigator.MoveNextItem = null;
            this.bindingNavigator.MovePreviousItem = null;
            this.bindingNavigator.Name = "bindingNavigator";
            this.bindingNavigator.PositionItem = null;
            this.bindingNavigator.RenderMode = System.Windows.Forms.ToolStripRenderMode.System;
            this.bindingNavigator.Size = new System.Drawing.Size(713, 25);
            this.bindingNavigator.TabIndex = 2;
            this.bindingNavigator.Text = "bindingNavigator1";
            // 
            // btnFirst
            // 
            this.btnFirst.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.btnFirst.Image = ((System.Drawing.Image)(resources.GetObject("btnFirst.Image")));
            this.btnFirst.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.btnFirst.Name = "btnFirst";
            this.btnFirst.Size = new System.Drawing.Size(36, 22);
            this.btnFirst.Text = "首页";
            this.btnFirst.Click += new System.EventHandler(this.btnFirst_Click);
            // 
            // btnPrev
            // 
            this.btnPrev.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.btnPrev.Image = ((System.Drawing.Image)(resources.GetObject("btnPrev.Image")));
            this.btnPrev.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.btnPrev.Name = "btnPrev";
            this.btnPrev.Size = new System.Drawing.Size(36, 22);
            this.btnPrev.Text = "上页";
            this.btnPrev.Click += new System.EventHandler(this.btnPrev_Click);
            // 
            // btnNext
            // 
            this.btnNext.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.btnNext.Image = ((System.Drawing.Image)(resources.GetObject("btnNext.Image")));
            this.btnNext.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.btnNext.Name = "btnNext";
            this.btnNext.Size = new System.Drawing.Size(36, 22);
            this.btnNext.Text = "下页";
            this.btnNext.Click += new System.EventHandler(this.btnNext_Click);
            // 
            // btnLast
            // 
            this.btnLast.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.btnLast.Image = ((System.Drawing.Image)(resources.GetObject("btnLast.Image")));
            this.btnLast.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.btnLast.Name = "btnLast";
            this.btnLast.Size = new System.Drawing.Size(36, 22);
            this.btnLast.Text = "未页";
            this.btnLast.Click += new System.EventHandler(this.btnLast_Click);
            // 
            // toolStripLabel6
            // 
            this.toolStripLabel6.Name = "toolStripLabel6";
            this.toolStripLabel6.Size = new System.Drawing.Size(28, 22);
            this.toolStripLabel6.Text = "     ";
            // 
            // toolStripLabel4
            // 
            this.toolStripLabel4.Name = "toolStripLabel4";
            this.toolStripLabel4.Size = new System.Drawing.Size(20, 22);
            this.toolStripLabel4.Text = "第";
            // 
            // txtCurrentPage
            // 
            this.txtCurrentPage.Name = "txtCurrentPage";
            this.txtCurrentPage.Size = new System.Drawing.Size(40, 25);
            // 
            // toolStripLabel1
            // 
            this.toolStripLabel1.Name = "toolStripLabel1";
            this.toolStripLabel1.Size = new System.Drawing.Size(20, 22);
            this.toolStripLabel1.Text = "页";
            // 
            // btnGo
            // 
            this.btnGo.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.btnGo.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Bold);
            this.btnGo.Image = ((System.Drawing.Image)(resources.GetObject("btnGo.Image")));
            this.btnGo.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.btnGo.Name = "btnGo";
            this.btnGo.Size = new System.Drawing.Size(23, 22);
            this.btnGo.Text = "GO";
            this.btnGo.Click += new System.EventHandler(this.btnGo_Click);
            // 
            // toolStripLabel5
            // 
            this.toolStripLabel5.Name = "toolStripLabel5";
            this.toolStripLabel5.Size = new System.Drawing.Size(28, 22);
            this.toolStripLabel5.Text = "     ";
            // 
            // toolStripLabel2
            // 
            this.toolStripLabel2.Name = "toolStripLabel2";
            this.toolStripLabel2.Size = new System.Drawing.Size(20, 22);
            this.toolStripLabel2.Text = "共";
            // 
            // lblPageCount
            // 
            this.lblPageCount.Name = "lblPageCount";
            this.lblPageCount.Size = new System.Drawing.Size(85, 22);
            this.lblPageCount.Text = "lblPageCount";
            // 
            // toolStripLabel3
            // 
            this.toolStripLabel3.Name = "toolStripLabel3";
            this.toolStripLabel3.Size = new System.Drawing.Size(20, 22);
            this.toolStripLabel3.Text = "页";
            // 
            // lblMaxPage
            // 
            this.lblMaxPage.Name = "lblMaxPage";
            this.lblMaxPage.Size = new System.Drawing.Size(76, 22);
            this.lblMaxPage.Text = "lblMaxPage";
            // 
            // Paging
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.Controls.Add(this.bindingNavigator);
            this.Name = "Paging";
            this.Size = new System.Drawing.Size(713, 28);
            ((System.ComponentModel.ISupportInitialize)(this.bindingNavigator)).EndInit();
            this.bindingNavigator.ResumeLayout(false);
            this.bindingNavigator.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        public System.Windows.Forms.BindingNavigator bindingNavigator;
        private System.Windows.Forms.ToolStripButton btnFirst;
        private System.Windows.Forms.ToolStripButton btnPrev;
        private System.Windows.Forms.ToolStripButton btnNext;
        private System.Windows.Forms.ToolStripButton btnLast;
        private System.Windows.Forms.ToolStripLabel toolStripLabel6;
        private System.Windows.Forms.ToolStripLabel toolStripLabel4;
        private System.Windows.Forms.ToolStripTextBox txtCurrentPage;
        private System.Windows.Forms.ToolStripLabel toolStripLabel1;
        private System.Windows.Forms.ToolStripButton btnGo;
        private System.Windows.Forms.ToolStripLabel toolStripLabel5;
        private System.Windows.Forms.ToolStripLabel toolStripLabel2;
        private System.Windows.Forms.ToolStripLabel lblPageCount;
        private System.Windows.Forms.ToolStripLabel toolStripLabel3;
        private System.Windows.Forms.ToolStripLabel lblMaxPage;
    }

Paging.cs

  /// <summary>
        /// 申明委托
        /// </summary>
        /// <param name="e"></param>
        /// <returns></returns>
        public delegate int EventPagingHandler(EventPagingArg e);
        public partial class Paging : UserControl
        {
            public Paging()
            {
                InitializeComponent();
            }
            public event EventPagingHandler EventPaging;
            /// <summary>
            /// 每页显示记录数
            /// </summary>
            private int _pageSize = 20;
            /// <summary>
            /// 每页显示记录数
            /// </summary>
            public int PageSize
            {
                get { return _pageSize; }
                set
                {
                    _pageSize = value;
                    GetPageCount();
                }
            }

            private int _nMax = 0;
            /// <summary>
            /// 总记录数
            /// </summary>
            public int NMax
            {
                get { return _nMax; }
                set
                {
                    _nMax = value;
                    GetPageCount();
                }
            }

            private int _pageCount = 0;
            /// <summary>
            /// 页数=总记录数/每页显示记录数
            /// </summary>
            public int PageCount
            {
                get { return _pageCount; }
                set { _pageCount = value; }
            }

            private int _pageCurrent = 0;
            /// <summary>
            /// 当前页号
            /// </summary>
            public int PageCurrent
            {
                get { return _pageCurrent; }
                set { _pageCurrent = value; }
            }
            private DataTable _dataSource;
            /// <summary>
            ///  数据源
            /// </summary>
            public DataTable DataSource
            {
                get { return _dataSource; }
                set
                {
                    _dataSource = value;
                }
            }
            public BindingNavigator ToolBar
            {
                get { return this.bindingNavigator; }
            }
            private void GetPageCount()
            {
                if (this.NMax > 0)
                {
                    this.PageCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(this.NMax) / Convert.ToDouble(this.PageSize)));
                }
                else
                {
                    this.PageCount = 0;
                }
            }
            /// <summary>
            /// 翻页控件数据绑定的方法
            /// </summary>
            public void Bind()
            {
                if (this.EventPaging != null)
                {
                    this.NMax = this.EventPaging(new EventPagingArg(this.PageCurrent));
                }

                if (this.PageCurrent > this.PageCount)
                {
                    this.PageCurrent = this.PageCount;
                }
                if (this.PageCount == 1)
                {
                    this.PageCurrent = 1;
                }
                lblPageCount.Text = this.PageCount.ToString();
                this.lblMaxPage.Text = "共" + this.NMax.ToString() + "条记录";
                this.txtCurrentPage.Text = this.PageCurrent.ToString();

                if (this.PageCurrent == 1)
                {
                    this.btnPrev.Enabled = false;
                    this.btnFirst.Enabled = false;
                }
                else
                {
                    btnPrev.Enabled = true;
                    btnFirst.Enabled = true;
                }

                if (this.PageCurrent == this.PageCount)
                {
                    this.btnLast.Enabled = false;
                    this.btnNext.Enabled = false;
                }
                else
                {
                    btnLast.Enabled = true;
                    btnNext.Enabled = true;
                }

                if (this.NMax == 0)
                {
                    btnNext.Enabled = false;
                    btnLast.Enabled = false;
                    btnFirst.Enabled = false;
                    btnPrev.Enabled = false;
                }
            }

            private void btnFirst_Click(object sender, EventArgs e)
            {
                PageCurrent = 1;
                this.Bind();
            }

            private void btnPrev_Click(object sender, EventArgs e)
            {
                PageCurrent -= 1;
                if (PageCurrent <= 0)
                {
                    PageCurrent = 1;
                }
                this.Bind();
            }

            private void btnNext_Click(object sender, EventArgs e)
            {
                this.PageCurrent += 1;
                if (PageCurrent > PageCount)
                {
                    PageCurrent = PageCount;
                }
                this.Bind();
            }

            private void btnLast_Click(object sender, EventArgs e)
            {
                PageCurrent = PageCount;
                this.Bind();
            }

            private void btnGo_Click(object sender, EventArgs e)
            {
                if (this.txtCurrentPage.Text != null && txtCurrentPage.Text != "")
                {
                    if (Int32.TryParse(txtCurrentPage.Text, out _pageCurrent))
                    {
                        this.Bind();
                    }
                    else
                    {
                        MessageBox.Show("输入数字格式错误！");
                    }
                }
            }

            private void txtCurrentPage_KeyDown(object sender, KeyEventArgs e)
            {
                if (e.KeyCode == Keys.Enter)
                {
                    this.Bind();
                }
            }

        }
        /// <summary>
        /// 自定义事件数据基类
        /// </summary>
        public class EventPagingArg : EventArgs
        {
            private int _intPageIndex;
            public EventPagingArg(int PageIndex)
            {
                _intPageIndex = PageIndex;
            }
        }

使用：
PagingHelper

 class PagingHelper
    {

            private int _PageSize = 10;
            private int _PageIndex = 1;
            private int _TotalCount = 0;
            private string _TableName;//表名
            private string _QueryFieldName = "*";//表字段FieldStr
            private string _OrderStr = string.Empty; //排序_SortStr
            private string _QueryCondition = string.Empty;//查询的条件 RowFilter
            private string _PrimaryKey = string.Empty;//主键
          
            /// <summary>
            /// 显示页数
            /// </summary>
            public int PageSize
            {
                get
                {
                    return _PageSize;

                }
                set
                {
                    _PageSize = value;
                }
            }
            /// <summary>
            /// 当前页
            /// </summary>
            public int PageIndex
            {
                get
                {
                    return _PageIndex;
                }
                set
                {
                    _PageIndex = value;
                }
            }
          
            /// <summary>
            /// 总记录数
            /// </summary>
            public int TotalCount
            {
                get
                {
                    return _TotalCount;
                }
            }
            /// <summary>
            /// 表名，包括视图
            /// </summary>
            public string TableName
            {
                get
                {
                    return _TableName;
                }
                set
                {
                    _TableName = value;
                }
            }
            /// <summary>
            /// 表字段FieldStr
            /// </summary>
            public string QueryFieldName
            {
                get
                {
                    return _QueryFieldName;
                }
                set
                {
                    _QueryFieldName = value;
                }
            }
            /// <summary>
            /// 排序字段
            /// </summary>
            public string OrderStr
            {
                get
                {
                    return _OrderStr;
                }
                set
                {
                    _OrderStr = value;
                }
            }
            public  DataTable QueryDataTable()
            {
               //这里调用存储过程实现数据读取
               //展示就用本地测试数据
                DataTable dt = new DataTable();
                dt.Columns.Add("ID", typeof(int));
                dt.Columns.Add("Name", typeof(string));
                _TotalCount = 101;
              
                    int index = PageIndex == 1 ? 1 : PageIndex * PageSize;
                    for (int i = index; i < index+PageSize; i++)
                    {
                        dt.Rows.Add(i, "Name" + i.ToString());
                    }
                  dt.AcceptChanges();
                
               
                return dt;
            }
    }

测试页面调用：

 private void Form1_Load(object sender, EventArgs e)
        {
            this.paging1.PageCurrent = 1;
            this.paging1.Bind();
        }
      
        private int paging1_EventPaging(EventPagingArg e)
        {
           return  Bind(this.paging1.PageCurrent);
        }
        private int Bind(int pagecurrent)
        {
            PagingHelper phelper = new PagingHelper();
            phelper.PageIndex = pagecurrent;
            paging1.PageSize = 20;
            DataTable dt = phelper.QueryDataTable();
            this.dataGridView1.DataSource = dt.DefaultView;
            return phelper.TotalCount;
        }