自己写的一个分页控件类(WinForm)

2023-11-16 17:39:46

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Drawing;
  5. using System.Data;
  6. using System.Text;
  7. using System.Windows.Forms;
  9. namespace xYuanShian.ControlLibrary
  10. {
  11.         /// <summary>
  12.         /// 翻页控件
  13.         /// </summary>
  14.         public partial class PageControl : UserControl
  15.         {
  16.                 #region 私有成员
  17.                 /// <summary>
  18.                 /// 页长
  19.                 /// </summary>
  20.                 private int _PageSize = 50;
  21.                 /// <summary>
  22.                 /// 总记录数
  23.                 /// </summary>
  24.                 private int _RecordCount = 0;
  25.                 /// <summary>
  26.                 /// 当前页码
  27.                 /// </summary>
  28.                 private int _PageIndex = 1;
  29.                 /// <summary>
  30.                 /// 获取或设置页数量
  31.                 /// </summary>
  32.                 private int PageCount { get; set; }
  33.                 /// <summary>
  34.                 /// 获取或设置跳转页面
  35.                 /// </summary>
  36.                 private int GoIndex { get; set; }
  37.                 #endregion 私有成员
  38.  
  39.                 #region 公有成员
  40.                 /// <summary>
  41.                 /// 获取或设置页显示数量
  42.                 /// </summary>
  43.                 public int PageSize
  44.                 {
  45.                         get { return _PageSize; }
  46.                         set
  47.                         {
  48.                                 if ( value <= 0 )
  49.                                 {
  50.                                         MessageBox.Show( "页码不正确!", "错误！" );
  51.                                 }
  52.                                 else
  53.                                 {
  54.                                         _PageSize = value;
  55.                                         this.SetPageCountValue();
  56.                                 }
  57.                         }
  58.                 }
  59.                 /// <summary>
  60.                 /// 获取或设置数据总条数
  61.                 /// </summary>
  62.                 public int RecordCount
  63.                 {
  64.                         get { return _RecordCount; }
  65.                         set
  66.                         {
  67.                                 _RecordCount = value;
  68.                                 this.SetPageCountValue();
  69.                         }
  70.                 }
  71.                 /// <summary>
  72.                 /// 获取页码
  73.                 /// </summary>
  74.                 public int CurrentIndex { get { return _PageIndex; } }
  75.                 /// <summary>
  76.                 /// 翻页事件
  77.                 /// </summary>
  78.                 public event PageControlEventHandler PageChange;
  79.                 #endregion 公有成员
  81.                 /// <summary>
  82.                 /// 构造函数
  83.                 /// </summary>
  84.                 public PageControl()
  85.                 {
  86.                         InitializeComponent();
  87.                 }
  88.                 /// <summary>
  89.                 /// 构造函数
  90.                 /// </summary>
  91.                 /// <param name="RecordCount">总记录数</param>
  92.                 public void Init( int RecordCount, int pageSize )
  93.                 {
  94.                         /// 数据条数
  95.                         _RecordCount = RecordCount;
  97.                         /// 页长
  98.                         _PageSize = pageSize;
  100.                         //跳转页码
  101.                         GoIndex = 0;
  103.                         SetPageCountValue();
  104.                         RefreshData();
  105.                 }
  106.                 /// <summary>
  107.                 /// 刷新控件的显示
  108.                 /// </summary>
  109.                 public void RefreshText()
  110.                 {
  111.                         lblCustomInfo.Text = "第 " + CurrentIndex.ToString() + " 页／共 " + PageCount.ToString() + " 页";
  112.                         txtPageSize.Text = _PageSize.ToString();
  113.  
  114.                         #region 设置按钮状态
  115.                         if ( PageCount == 1 )
  116.                         {
  117.                                 lbllPage.Enabled = false;
  118.                                 lblnPage.Enabled = false;
  119.                                 lblpPage.Enabled = false;
  120.                                 lblfPage.Enabled = false;
  121.                         }
  122.                         else if ( _PageIndex >= PageCount )
  123.                         {
  124.                                 lblnPage.Enabled = false;
  125.                                 lbllPage.Enabled = false;
  126.                                 lblpPage.Enabled = true;
  127.                                 lblfPage.Enabled = true;
  128.                         }
  129.                         else if ( _PageIndex <= 1 )
  130.                         {
  131.                                 lblnPage.Enabled = true;
  132.                                 lbllPage.Enabled = true;
  133.                                 lblpPage.Enabled = false;
  134.                                 lblfPage.Enabled = false;
  135.                         }
  136.                         else
  137.                         {
  138.                                 lbllPage.Enabled = true;
  139.                                 lblnPage.Enabled = true;
  140.                                 lblpPage.Enabled = true;
  141.                                 lblfPage.Enabled = true;
  142.                         }
  143.                         #endregion 设置按钮状态
  144.                 }
  145.                 /// <summary>
  146.                 /// 设置各种值
  147.                 /// </summary>
  148.                 private void SetPageCountValue()
  149.                 {
  150.                         /// 页总数
  151.                         PageCount = ( _RecordCount / _PageSize ) + 1;
  153.                         /// 如果总数刚才被页长整除，则页码减1
  154.                         if ( _RecordCount % _PageSize == 0 ) PageCount--;
  156.                         /// 当改页总数改变后，当前页码比最大的页码还大，则设置为最大页码
  157.                         if ( _PageIndex > PageCount )
  158.                                 _PageIndex = PageCount;
  159.                         else if ( _PageIndex <= 0 )
  160.                                 _PageIndex = 1;
  161.                 }
  162.                 /// <summary>
  163.                 /// 翻到首页
  164.                 /// </summary>
  165.                 /// <param name="sender"></param>
  166.                 /// <param name="e"></param>
  167.                 private void lblfPage_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
  168.                 {
  169.                         //第一页
  170.                         this.JumpPage( 1 );
  171.                 }
  172.                 /// <summary>
  173.                 /// 上一页
  174.                 /// </summary>
  175.                 /// <param name="sender"></param>
  176.                 /// <param name="e"></param>
  177.                 private void lblpPage_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
  178.                 {
  179.                         //上一页
  180.                         this.JumpPage( _PageIndex - 1 );
  181.                 }
  182.                 /// <summary>
  183.                 /// 下一页
  184.                 /// </summary>
  185.                 /// <param name="sender"></param>
  186.                 /// <param name="e"></param>
  187.                 private void lblnPage_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
  188.                 {
  189.                         //下一页
  190.                         this.JumpPage( _PageIndex + 1 );
  191.                 }
  192.                 /// <summary>
  193.                 /// 末页
  194.                 /// </summary>
  195.                 /// <param name="sender"></param>
  196.                 /// <param name="e"></param>
  197.                 private void lbllPage_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
  198.                 {
  199.                         //最后页
  200.                         this.JumpPage( PageCount );
  201.                 }
  202.                 /// <summary>
  203.                 /// 跳转
  204.                 /// </summary>
  205.                 /// <param name="sender"></param>
  206.                 /// <param name="e"></param>
  207.                 private void lblGo_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
  208.                 {
  209.                         //跳转
  210.                         int gpi = 0;
  211.                         if ( String.IsNullOrEmpty( tbxGo.Text ) || !int.TryParse( tbxGo.Text, out gpi ) )
  212.                         {
  213.                                 tbxGo.Text = "";
  214.                                 MessageBox.Show( "目标页码不正确！", "错误" );
  215.                                 return;
  216.                         }
  218.                         this.JumpPage( gpi );
  219.                 }
  220.                 /// <summary>
  221.                 /// 翻页
  222.                 /// </summary>
  223.                 /// <param name="pIndex">目标页码</param>
  224.                 private void JumpPage( int pIndex )
  225.                 {
  226.                         _PageIndex = pIndex;
  227.                         if ( _PageIndex <= 0 )
  228.                                 _PageIndex = 1;
  229.                         else if ( _PageIndex > PageCount )
  230.                                 _PageIndex = PageCount;
  232.                         /// 更新外观，以及调用数据
  233.                         RefreshData();
  234.                 }
  235.                 /// <summary>
  236.                 /// 刷新文本
  237.                 /// </summary>
  238.                 private void RefreshData()
  239.                 {
  240.                         if ( PageChange != null )
  241.                                 PageChange( this, new PageControlEventArgs( PageSize, CurrentIndex ) );
  243.                         this.RefreshText();
  244.                 }
  245.                 /// <summary>
  246.                 /// 页长改变
  247.                 /// </summary>
  248.                 /// <param name="sender"></param>
  249.                 /// <param name="e"></param>
  250.                 private void txtPageSize_TextChanged( object sender, EventArgs e )
  251.                 {
  252.                         if ( !String.IsNullOrEmpty( txtPageSize.Text ) )
  253.                         {
  254.                                 int ps = 0;
  255.                                 if ( int.TryParse( txtPageSize.Text, out ps ) )
  256.                                 {
  257.                                         PageSize = ps;
  258.                                 }
  259.                         }
  260.                 }
  261.                 /// <summary>
  262.                 /// 改变页长
  263.                 /// </summary>
  264.                 /// <param name="sender"></param>
  265.                 /// <param name="e"></param>
  266.                 private void lblShow_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
  267.                 {
  268.                         this.RefreshData();
  269.                 }
  270.         }
  271.         /// <summary>
  272.         /// 翻页事件
  273.         /// </summary>
  274.         /// <param name="Sender">事件调用者</param>
  275.         /// <param name="PageSize">页长</param>
  276.         /// <param name="PageIndex">页码</param>
  277.         public delegate void PageControlEventHandler( object Sender, PageControlEventArgs e );
  278.         /// <summary>
  279.         /// 翻页事件参数
  280.         /// </summary>
  281.         public class PageControlEventArgs : EventArgs
  282.         {
  283.                 /// <summary>
  284.                 /// 页长
  285.                 /// </summary>
  286.                 public int PageSize = 0;
  287.                 /// <summary>
  288.                 /// 页码
  289.                 /// </summary>
  290.                 public int CurrentIndex = 0;
  291.                 /// <summary>
  292.                 /// 构造函数
  293.                 /// </summary>
  294.                 /// <param name="PageSize"></param>
  295.                 /// <param name="PageIndex"></param>
  296.                 public PageControlEventArgs( int PageSize, int PageIndex )
  297.                 {
  298.                         this.PageSize = PageSize;
  299.                         this.CurrentIndex = PageIndex;
  300.                 }
  301.         }
  302. }

PageControl.Designer.cs类

 

  1. namespace xYuanShian.ControlLibrary
  2. {
  3.         partial class PageControl
  4.         {
  5.                 /// <summary>
  6.                 /// 必需的设计器变量。
  7.                 /// </summary>
  8.                 private System.ComponentModel.IContainer components = null;
  10.                 /// <summary>
  11.                 /// 清理所有正在使用的资源。
  12.                 /// </summary>
  13.                 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
  14.                 protected override void Dispose( bool disposing )
  15.                 {
  16.                         if ( disposing && ( components != null ) )
  17.                         {
  18.                                 components.Dispose();
  19.                         }
  20.                         base.Dispose( disposing );
  21.                 }
  22.  
  23.                 #region 组件设计器生成的代码
  25.                 /// <summary>
  26.                 /// 设计器支持所需的方法 - 不要
  27.                 /// 使用代码编辑器修改此方法的内容。
  28.                 /// </summary>
  29.                 private void InitializeComponent()
  30.                 {
  31.                         this.lblfPage = new System.Windows.Forms.LinkLabel();
  32.                         this.lblpPage = new System.Windows.Forms.LinkLabel();
  33.                         this.lblnPage = new System.Windows.Forms.LinkLabel();
  34.                         this.lbllPage = new System.Windows.Forms.LinkLabel();
  35.                         this.tbxGo = new System.Windows.Forms.TextBox();
  36.                         this.lblGo = new System.Windows.Forms.LinkLabel();
  37.                         this.txtPageSize = new System.Windows.Forms.TextBox();
  38.                         this.label6 = new System.Windows.Forms.Label();
  39.                         this.lblCustomInfo = new System.Windows.Forms.Label();
  40.                         this.lblShow = new System.Windows.Forms.LinkLabel();
  41.                         this.SuspendLayout();
  42.                         // 
  43.                         // lblfPage
  44.                         // 
  45.                         this.lblfPage.AutoSize = true;
  46.                         this.lblfPage.Font = new System.Drawing.Font( "宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 134 ) ) );
  47.                         this.lblfPage.LinkColor = System.Drawing.Color.Black;
  48.                         this.lblfPage.Location = new System.Drawing.Point( 6, 10 );
  49.                         this.lblfPage.Name = "lblfPage";
  50.                         this.lblfPage.Size = new System.Drawing.Size( 29, 12 );
  51.                         this.lblfPage.TabIndex = 0;
  52.                         this.lblfPage.TabStop = true;
  53.                         this.lblfPage.Text = "首页";
  54.                         this.lblfPage.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler( this.lblfPage_LinkClicked );
  55.                         // 
  56.                         // lblpPage
  57.                         // 
  58.                         this.lblpPage.AutoSize = true;
  59.                         this.lblpPage.Font = new System.Drawing.Font( "宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 134 ) ) );
  60.                         this.lblpPage.LinkColor = System.Drawing.Color.Black;
  61.                         this.lblpPage.Location = new System.Drawing.Point( 41, 10 );
  62.                         this.lblpPage.Name = "lblpPage";
  63.                         this.lblpPage.Size = new System.Drawing.Size( 29, 12 );
  64.                         this.lblpPage.TabIndex = 1;
  65.                         this.lblpPage.TabStop = true;
  66.                         this.lblpPage.Text = "上页";
  67.                         this.lblpPage.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler( this.lblpPage_LinkClicked );
  68.                         // 
  69.                         // lblnPage
  70.                         // 
  71.                         this.lblnPage.AutoSize = true;
  72.                         this.lblnPage.Font = new System.Drawing.Font( "宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 134 ) ) );
  73.                         this.lblnPage.LinkColor = System.Drawing.Color.Black;
  74.                         this.lblnPage.Location = new System.Drawing.Point( 76, 10 );
  75.                         this.lblnPage.Name = "lblnPage";
  76.                         this.lblnPage.Size = new System.Drawing.Size( 29, 12 );
  77.                         this.lblnPage.TabIndex = 2;
  78.                         this.lblnPage.TabStop = true;
  79.                         this.lblnPage.Text = "下页";
  80.                         this.lblnPage.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler( this.lblnPage_LinkClicked );
  81.                         // 
  82.                         // lbllPage
  83.                         // 
  84.                         this.lbllPage.AutoSize = true;
  85.                         this.lbllPage.Font = new System.Drawing.Font( "宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 134 ) ) );
  86.                         this.lbllPage.LinkColor = System.Drawing.Color.Black;
  87.                         this.lbllPage.Location = new System.Drawing.Point( 111, 10 );
  88.                         this.lbllPage.Name = "lbllPage";
  89.                         this.lbllPage.Size = new System.Drawing.Size( 29, 12 );
  90.                         this.lbllPage.TabIndex = 3;
  91.                         this.lbllPage.TabStop = true;
  92.                         this.lbllPage.Text = "末页";
  93.                         this.lbllPage.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler( this.lbllPage_LinkClicked );
  94.                         // 
  95.                         // tbxGo
  96.                         // 
  97.                         this.tbxGo.Location = new System.Drawing.Point( 326, 7 );
  98.                         this.tbxGo.Name = "tbxGo";
  99.                         this.tbxGo.Size = new System.Drawing.Size( 39, 21 );
  100.                         this.tbxGo.TabIndex = 5;
  101.                         // 
  102.                         // lblGo
  103.                         // 
  104.                         this.lblGo.AutoSize = true;
  105.                         this.lblGo.Font = new System.Drawing.Font( "宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 134 ) ) );
  106.                         this.lblGo.LinkColor = System.Drawing.Color.Black;
  107.                         this.lblGo.Location = new System.Drawing.Point( 371, 10 );
  108.                         this.lblGo.Name = "lblGo";
  109.                         this.lblGo.Size = new System.Drawing.Size( 29, 12 );
  110.                         this.lblGo.TabIndex = 6;
  111.                         this.lblGo.TabStop = true;
  112.                         this.lblGo.Text = "跳转";
  113.                         this.lblGo.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler( this.lblGo_LinkClicked );
  114.                         // 
  115.                         // txtPageSize
  116.                         // 
  117.                         this.txtPageSize.Location = new System.Drawing.Point( 234, 7 );
  118.                         this.txtPageSize.Name = "txtPageSize";
  119.                         this.txtPageSize.Size = new System.Drawing.Size( 40, 21 );
  120.                         this.txtPageSize.TabIndex = 15;
  121.                         this.txtPageSize.TextChanged += new System.EventHandler( this.txtPageSize_TextChanged );
  122.                         // 
  123.                         // label6
  124.                         // 
  125.                         this.label6.AutoSize = true;
  126.                         this.label6.Location = new System.Drawing.Point( 146, 11 );
  127.                         this.label6.Name = "label6";
  128.                         this.label6.Size = new System.Drawing.Size( 89, 12 );
  129.                         this.label6.TabIndex = 14;
  130.                         this.label6.Text = "每页显示记录数";
  131.                         // 
  132.                         // lblCustomInfo
  133.                         // 
  134.                         this.lblCustomInfo.AutoSize = true;
  135.                         this.lblCustomInfo.Location = new System.Drawing.Point( 406, 10 );
  136.                         this.lblCustomInfo.Name = "lblCustomInfo";
  137.                         this.lblCustomInfo.Size = new System.Drawing.Size( 35, 12 );
  138.                         this.lblCustomInfo.TabIndex = 16;
  139.                         this.lblCustomInfo.Text = "第1页";
  140.                         // 
  141.                         // lblShow
  142.                         // 
  143.                         this.lblShow.AutoSize = true;
  144.                         this.lblShow.Font = new System.Drawing.Font( "宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( byte )( 134 ) ) );
  145.                         this.lblShow.LinkColor = System.Drawing.Color.Black;
  146.                         this.lblShow.Location = new System.Drawing.Point( 278, 11 );
  147.                         this.lblShow.Name = "lblShow";
  148.                         this.lblShow.Size = new System.Drawing.Size( 29, 12 );
  149.                         this.lblShow.TabIndex = 17;
  150.                         this.lblShow.TabStop = true;
  151.                         this.lblShow.Text = "显示";
  152.                         this.lblShow.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler( this.lblShow_LinkClicked );
  153.                         // 
  154.                         // PageControl
  155.                         // 
  156.                         this.AutoScaleDimensions = new System.Drawing.SizeF( 6F, 12F );
  157.                         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
  158.                         this.Controls.Add( this.lblShow );
  159.                         this.Controls.Add( this.lblCustomInfo );
  160.                         this.Controls.Add( this.txtPageSize );
  161.                         this.Controls.Add( this.label6 );
  162.                         this.Controls.Add( this.lblGo );
  163.                         this.Controls.Add( this.tbxGo );
  164.                         this.Controls.Add( this.lbllPage );
  165.                         this.Controls.Add( this.lblnPage );
  166.                         this.Controls.Add( this.lblpPage );
  167.                         this.Controls.Add( this.lblfPage );
  168.                         this.Name = "PageControl";
  169.                         this.Size = new System.Drawing.Size( 553, 30 );
  170.                         this.ResumeLayout( false );
  171.                         this.PerformLayout();
  173.                 }
  174.  
  175.                 #endregion
  177.                 private System.Windows.Forms.LinkLabel lblfPage;
  178.                 private System.Windows.Forms.LinkLabel lblpPage;
  179.                 private System.Windows.Forms.LinkLabel lblnPage;
  180.                 private System.Windows.Forms.LinkLabel lbllPage;
  181.                 private System.Windows.Forms.TextBox tbxGo;
  182.                 private System.Windows.Forms.LinkLabel lblGo;
  183.                 private System.Windows.Forms.TextBox txtPageSize;
  184.                 private System.Windows.Forms.Label label6;
  185.                 private System.Windows.Forms.Label lblCustomInfo;
  186.                 private System.Windows.Forms.LinkLabel lblShow;
  187.         }
  188. }

使用方法

  1.                 private void test()
  2.                 {
  3.                         PageControl pageControl1 = new PageControl();
  4.                         pageControl1.Init( 总记录数, 页长 );          // 或者用下面的方式
  5.                         pageControl1.RecordCount = 设置记录数;
  6.                         pageControl1.PageSize = 页长;
  7.                         pageControl1.PageChange += new PageControlEventHandler( myDataBinder );
  8.                 }
  10.                 private void myDataBinder(object Sender, PageControlEventArgs e)
  11.                 {
  12.                         //绑定数据源操作 e.CurrentIndex, e.PageSize
  13.                 }

自己写的一个分页控件类(WinForm)

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