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497 lines
15 KiB
C#
497 lines
15 KiB
C#
// ***********************************************************************
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// Assembly : HZH_Controls
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// Created : 08-15-2019
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//
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// ***********************************************************************
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// <copyright file="UCPagerControl2.cs">
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// Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
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// </copyright>
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//
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// Blog: https://www.cnblogs.com/bfyx
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// GitHub：https://github.com/kwwwvagaa/NetWinformControl
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// gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
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//
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// If you use this code, please keep this note.
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// ***********************************************************************
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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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namespace HZH_Controls.Controls
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{
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/// <summary>
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/// Class UCPagerControl2.
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/// Implements the <see cref="HZH_Controls.Controls.UCPagerControlBase" />
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/// </summary>
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/// <seealso cref="HZH_Controls.Controls.UCPagerControlBase" />
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[ToolboxItem(true)]
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public partial class UCPagerControl2 : UCPagerControlBase
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="UCPagerControl2" /> class.
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/// </summary>
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public UCPagerControl2()
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{
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InitializeComponent();
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txtPage.txtInput.KeyDown += txtInput_KeyDown;
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}
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/// <summary>
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/// Handles the KeyDown event of the txtInput control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="KeyEventArgs" /> instance containing the event data.</param>
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void txtInput_KeyDown(object sender, KeyEventArgs e)
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{
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if (e.KeyCode == Keys.Enter)
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{
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btnToPage_BtnClick(null, null);
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txtPage.InputText = "";
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}
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}
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/// <summary>
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/// Occurs when [show source changed].
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/// </summary>
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public override event PageControlEventHandler ShowSourceChanged;
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/// <summary>
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/// 关联的数据源
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/// </summary>
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/// <value>The data source.</value>
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public override List<object> DataSource
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{
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get
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{
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return base.DataSource;
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}
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set
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{
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if (value == null)
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{
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base.DataSource = new List<object>();
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}
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else
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{
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base.DataSource = value;
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}
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PageIndex = 1;
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ResetPageCount();
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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}
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/// <summary>
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/// 每页显示数量
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/// </summary>
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/// <value>The size of the page.</value>
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public override int PageSize
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{
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get
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{
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return base.PageSize;
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}
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set
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{
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base.PageSize = value;
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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ResetPageCount();
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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}
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public override int PageCount
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{
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get
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{
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return base.PageCount;
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}
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set
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{
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base.PageCount = value;
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ReloadPage();
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}
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}
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public override int PageIndex
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{
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get
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{
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return base.PageIndex;
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}
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set
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{
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base.PageIndex = value;
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ReloadPage();
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}
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}
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/// <summary>
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/// 第一页
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/// </summary>
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public override void FirstPage()
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{
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if (PageIndex == 1)
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return;
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PageIndex = 1;
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ReloadPage();
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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StartIndex = (PageIndex - 1) * PageSize;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 上一页
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/// </summary>
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public override void PreviousPage()
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{
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if (PageIndex <= 1)
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{
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return;
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}
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PageIndex--;
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ReloadPage();
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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StartIndex = (PageIndex - 1) * PageSize;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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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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public override void NextPage()
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{
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if (PageIndex >= PageCount)
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{
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return;
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}
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PageIndex++;
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ReloadPage();
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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StartIndex = (PageIndex - 1) * PageSize;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 最后一页
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/// </summary>
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public override void EndPage()
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{
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if (PageIndex == PageCount)
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return;
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PageIndex = PageCount;
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ReloadPage();
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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StartIndex = (PageIndex - 1) * PageSize;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// Resets the page count.
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/// </summary>
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private void ResetPageCount()
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{
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if (PageSize > 0)
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{
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if (base.DataSource != null)
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PageCount = base.DataSource.Count / base.PageSize + (base.DataSource.Count % base.PageSize > 0 ? 1 : 0);
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}
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txtPage.MaxValue = PageCount;
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txtPage.MinValue = 1;
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ReloadPage();
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}
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/// <summary>
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/// Reloads the page.
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/// </summary>
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private void ReloadPage()
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{
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try
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{
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ControlHelper.FreezeControl(tableLayoutPanel1, true);
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List<int> lst = new List<int>();
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if (PageCount <= 9)
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{
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for (var i = 1; i <= PageCount; i++)
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{
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lst.Add(i);
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}
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}
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else
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{
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if (this.PageIndex <= 6)
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{
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for (var i = 1; i <= 7; i++)
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{
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lst.Add(i);
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}
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lst.Add(-1);
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lst.Add(PageCount);
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}
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else if (this.PageIndex > PageCount - 6)
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{
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lst.Add(1);
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lst.Add(-1);
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for (var i = PageCount - 6; i <= PageCount; i++)
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{
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lst.Add(i);
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}
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}
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else
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{
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lst.Add(1);
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lst.Add(-1);
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var begin = PageIndex - 2;
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var end = PageIndex + 2;
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if (end > PageCount)
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{
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end = PageCount;
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begin = end - 4;
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if (PageIndex - begin < 2)
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{
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begin = begin - 1;
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}
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}
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else if (end + 1 == PageCount)
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{
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end = PageCount;
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}
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for (var i = begin; i <= end; i++)
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{
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lst.Add(i);
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}
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if (end != PageCount)
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{
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lst.Add(-1);
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lst.Add(PageCount);
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}
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}
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}
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for (int i = 0; i < 9; i++)
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{
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UCBtnExt c = (UCBtnExt)this.tableLayoutPanel1.Controls.Find("p" + (i + 1), false)[0];
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if (i >= lst.Count)
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{
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c.Visible = false;
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}
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else
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{
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if (lst[i] == -1)
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{
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c.BtnText = "...";
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c.Enabled = false;
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}
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else
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{
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c.BtnText = lst[i].ToString();
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c.Enabled = true;
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}
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c.Visible = true;
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if (lst[i] == PageIndex)
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{
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c.RectColor = Color.FromArgb(255, 77, 59);
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}
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else
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{
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c.RectColor = Color.FromArgb(223, 223, 223);
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}
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}
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}
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ShowBtn(PageIndex > 1, PageIndex < PageCount);
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}
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finally
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{
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ControlHelper.FreezeControl(tableLayoutPanel1, false);
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}
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}
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/// <summary>
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/// Handles the BtnClick event of the page control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void page_BtnClick(object sender, EventArgs e)
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{
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PageIndex = (sender as UCBtnExt).BtnText.ToInt();
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StartIndex = (PageIndex - 1) * PageSize;
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ReloadPage();
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 控制按钮显示
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/// </summary>
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/// <param name="blnLeftBtn">是否显示上一页，第一页</param>
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/// <param name="blnRightBtn">是否显示下一页，最后一页</param>
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protected override void ShowBtn(bool blnLeftBtn, bool blnRightBtn)
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{
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btnFirst.Enabled = btnPrevious.Enabled = blnLeftBtn;
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btnNext.Enabled = btnEnd.Enabled = blnRightBtn;
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}
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/// <summary>
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/// Handles the BtnClick event of the btnFirst control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void btnFirst_BtnClick(object sender, EventArgs e)
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{
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FirstPage();
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}
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/// <summary>
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/// Handles the BtnClick event of the btnPrevious control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void btnPrevious_BtnClick(object sender, EventArgs e)
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{
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PreviousPage();
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}
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/// <summary>
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/// Handles the BtnClick event of the btnNext control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void btnNext_BtnClick(object sender, EventArgs e)
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{
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NextPage();
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}
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/// <summary>
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/// Handles the BtnClick event of the btnEnd control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void btnEnd_BtnClick(object sender, EventArgs e)
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{
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EndPage();
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}
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/// <summary>
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/// Handles the BtnClick event of the btnToPage control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void btnToPage_BtnClick(object sender, EventArgs e)
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{
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if (!string.IsNullOrEmpty(txtPage.InputText))
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{
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PageIndex = txtPage.InputText.ToInt();
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StartIndex = (PageIndex - 1) * PageSize;
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ReloadPage();
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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}
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}
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}
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