315 lines
9.5 KiB
C#
315 lines
9.5 KiB
C#
#region 版权信息
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/*---------------------------------------------------------------------*
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// 项目 名称：《Winform分页控件》
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// 文 件 名： Pager.cs
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// 描 述： 分页控件
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// 作 者：kwon yan
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*----------------------------------------------------------------------*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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//using DeiNiu.Utils;
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namespace DeiNiu.Controls.pager
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{
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/**/
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/// <summary>
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/// 申明委托
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/// </summary>
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/// <param name="e"></param>
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/// <returns></returns>
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public delegate int EventPagingHandler(EventPagingArg e);
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/**/
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/// <summary>
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/// 分页控件呈现
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/// </summary>
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public partial class Pager : UserControl
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{
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public Pager()
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{
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InitializeComponent();
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this.bindingNavigator1.LayoutStyle = ToolStripLayoutStyle.HorizontalStackWithOverflow;
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this.bindingNavigator1.AutoSize = true;
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}
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public event EventPagingHandler EventPaging;
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/**/
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/// <summary>
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/// 每页显示记录数
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/// </summary>
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private int _pageSize = 100;//Utils.WmsConstants.PAGER_SIZE;
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/**/
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/// <summary>
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/// 每页显示记录数
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/// </summary>
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public int PageSize
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{
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get { return _pageSize; }
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set
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{
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_pageSize = value;
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GetPageCount();
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}
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}
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private int _nMax = 0;
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/**/
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/// <summary>
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/// 总记录数
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/// </summary>
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public int NMax
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{
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get { return _nMax; }
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set
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{
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_nMax = value;
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GetPageCount();
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}
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}
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private int _pageCount = 0;
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/**/
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/// <summary>
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/// 页数=总记录数/每页显示记录数
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/// </summary>
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public int PageCount
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{
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get { return _pageCount; }
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set { _pageCount = value; }
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}
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private int _pageCurrent = 0;
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/**/
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/// <summary>
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/// 当前页号
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/// </summary>
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public int PageCurrent
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{
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get {
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// _pageCurrent = _pageCurrent > _pageCount ? _pageCount : _pageCurrent;
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// _pageCurrent = _pageCurrent == 0 && _pageCount > 0 ? 1 : _pageCurrent;
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return _pageCurrent;
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}
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set { _pageCurrent = value; }
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}
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/// <summary>
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/// 设置页面大小
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/// </summary>
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private void GetPageCount()
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{
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if (this.NMax > 0)
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{
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this.PageCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(this.NMax) / Convert.ToDouble(this.PageSize)));
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// lblPageCount.Text = " / " + PageCount.ToString();
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lblcurentpage.Text = PageCurrent.ToString() + " / " + PageCount.ToString();
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//lblPageCount1.Text = "每页 "+PageSize .ToString ()+" 条，共 "+PageCount.ToString()+" 页";
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// lblPageCount1.Text = "Page no: " + PageSize.ToString() + ",Total:" + PageCount.ToString() + " pages";
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// lblPageCount1.Text = PageSize.ToString() + "/" + PageCount.ToString() ;
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}
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else
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{
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this.PageCount = 0;
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}
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}
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/**/
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/// <summary>
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/// 翻页控件数据绑定的方法 关键是这步，都是调用这里
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/// </summary>
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public void Bind(bool query=true )
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{
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try
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{
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NMax = 0;
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if (query && this.EventPaging != null)
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{
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this.NMax = this.EventPaging(new EventPagingArg(this.PageCurrent));
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}
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if (this.PageCurrent > this.PageCount)
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{
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this.PageCurrent = this.PageCount;
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}
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if (this.PageCount == 1)
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{
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this.PageCurrent = 1;
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}
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lblcurentpage.Text = PageCurrent.ToString() + " / " + PageCount.ToString();
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lblRecordCount.Text = "共" + NMax.ToString() + "条";
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// lblRecordCount.Text = "Total: " + NMax.ToString() + " records";
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btnPrev.Enabled = true;
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btnFirst.Enabled = true;
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btnLast.Enabled = true;
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btnNext.Enabled = true;
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if (this.PageCurrent == 1)
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{
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this.btnPrev.Enabled = false;
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this.btnFirst.Enabled = false;
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}
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if (this.PageCurrent == this.PageCount)
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{
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this.btnLast.Enabled = false;
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this.btnNext.Enabled = false;
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}
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if (this.NMax == 0)
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{
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btnNext.Enabled = false;
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btnLast.Enabled = false;
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btnFirst.Enabled = false;
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btnPrev.Enabled = false;
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}
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cmbPagecount.Items.Clear();
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for (int i = 1; i <= PageCount; i++)
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{
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cmbPagecount.Items.Add(i.ToString());
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//if(i== PageCurrent - 1){
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// cmbPagecount.SelectedItem = cmbPagecount.Items[i - 1];
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//}
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}
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this.cmbPagecount.SelectedIndexChanged -= new System.EventHandler(this.cmbPagecount_SelectedIndexChanged);
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cmbPagecount.SelectedIndex = PageCurrent - 1;
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this.cmbPagecount.SelectedIndexChanged += new System.EventHandler(this.cmbPagecount_SelectedIndexChanged);
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comPagesize.Items.Clear();
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for (int i = 100; i <= 900; i += 100)
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{
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comPagesize.Items.Add(i.ToString());
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}
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/*
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for (int i = 50; i <= 500; i+=50)
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{
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comPagesize.Items.Add(i.ToString());
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}
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*/
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for (int i = 1000; i <= 9000; i += 1000)
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{
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comPagesize.Items.Add(i.ToString());
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}
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this.comPagesize.SelectedIndexChanged -= new System.EventHandler(this.comPagesize_SelectedIndexChanged);
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// comPagesize.SelectedIndex = this._pageSize / 100 -1;
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// comPagesize.SelectedIndex = this._pageSize / 50 - 1 ;
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comPagesize.SelectedIndex = _pageSize <= 1000 ? this._pageSize / 100 - 1 : 10 + _pageSize / 1000 - 2;
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this.comPagesize.SelectedIndexChanged += new System.EventHandler(this.comPagesize_SelectedIndexChanged);
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}
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catch (Exception er)
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{
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}
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}
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/// <summary>
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/// 首页
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnFirst_Click(object sender, EventArgs e)
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{
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PageCurrent = 1;
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this.Bind();
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}
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//上一页
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/// <summary>
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///
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnPrev_Click(object sender, EventArgs e)
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{
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PageCurrent -= 1;
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if (PageCurrent <= 0)
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{
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PageCurrent = 1;
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}
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this.Bind();
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}
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/// <summary>
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/// 下一页
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnNext_Click(object sender, EventArgs e)
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{
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this.PageCurrent += 1;
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if (PageCurrent > PageCount)
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{
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PageCurrent = PageCount;
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}
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this.Bind();
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}
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/// <summary>
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/// 最后页
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnLast_Click(object sender, EventArgs e)
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{
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PageCurrent = PageCount;
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this.Bind();
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}
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/// <summary>
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/// 转到新页
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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public void btnGo_Click(object sender, EventArgs e)
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{
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if (Int32.TryParse(cmbPagecount.SelectedItem.ToString(), out _pageCurrent))
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{
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this.Bind();
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}
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}
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private void cmbPagecount_SelectedIndexChanged(object sender, EventArgs e)
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{
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if (Int32.TryParse(cmbPagecount.SelectedItem.ToString(), out _pageCurrent))
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{
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this.Bind();
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}
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}
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private void comPagesize_SelectedIndexChanged(object sender, EventArgs e)
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{
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if (Int32.TryParse(comPagesize.SelectedItem.ToString(), out _pageSize))
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{
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GetPageCount();
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this.Bind();
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}
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}
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private void lblRecordCount_Click(object sender, EventArgs e)
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{
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}
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}
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/**/
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/// <summary>
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/// 自定义事件数据基类
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/// </summary>
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public class EventPagingArg : EventArgs
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{
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private int _intPageIndex;
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public EventPagingArg(int PageIndex)
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{
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_intPageIndex = PageIndex;
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}
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}
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}
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