listview 分页示例

using System;using System.Collections;using System.ComponentModel;using System.Drawing;using System.Data;using System.Runtime.InteropServices;using System.Windows.Forms;using System.Windows.Forms.Design;namespace LooongSoft{/// <summary>/// Summary description for ListViewPager./// </summary>[Designer(typeof(ListViewPagerDesigner))]public class ListViewPager : System.Windows.Forms.UserControl{#region Designerprivate System.Windows.Forms.Button _firstButton;private System.Windows.Forms.Button _preButton;private System.Windows.Forms.TextBox _goTextBox;private System.Windows.Forms.Button _goButton;private System.Windows.Forms.Button _nextButton;private System.Windows.Forms.Button _lastButton;private System.Windows.Forms.Label _currentPageLabel;private System.Windows.Forms.Label _totalLabel;/// <summary> /// Required designer variable./// </summary>private System.ComponentModel.Container components = null;public ListViewPager(){// This call is required by the Windows.Forms Form Designer.InitializeComponent();// TODO: Add any initialization after the InitializeComponent call}/// <summary> /// Clean up any resources being used./// </summary>protected override void Dispose( bool disposing ){if( disposing ){if(components != null){components.Dispose();}}base.Dispose( disposing );}#region Component Designer generated code/// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor./// </summary>private void InitializeComponent(){System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(ListViewPager));this._firstButton = new System.Windows.Forms.Button();this._preButton = new System.Windows.Forms.Button();this._goTextBox = new System.Windows.Forms.TextBox();this._goButton = new System.Windows.Forms.Button();this._nextButton = new System.Windows.Forms.Button();this._lastButton = new System.Windows.Forms.Button();this._currentPageLabel = new System.Windows.Forms.Label();this._totalLabel = new System.Windows.Forms.Label();this.SuspendLayout();// // _firstButton// this._firstButton.FlatStyle = System.Windows.Forms.FlatStyle.Popup;this._firstButton.Image = ((System.Drawing.Image)(resources.GetObject("_firstButton.Image")));this._firstButton.Location = new System.Drawing.Point(0, 23);this._firstButton.Name = "_firstButton";this._firstButton.Size = new System.Drawing.Size(24, 23);this._firstButton.TabIndex = 0;this._firstButton.Click = new System.EventHandler(this._firstButton_Click);this._firstButton.MouseEnter = new System.EventHandler(this._firstButton_MouseEnter);this._firstButton.MouseLeave = new System.EventHandler(this._firstButton_MouseLeave);// // _preButton// this._preButton.FlatStyle = System.Windows.Forms.FlatStyle.Popup;this._preButton.Image = ((System.Drawing.Image)(resources.GetObject("_preButton.Image")));this._preButton.Location = new System.Drawing.Point(24, 23);this._preButton.Name = "_preButton";this._preButton.Size = new System.Drawing.Size(24, 23);this._preButton.TabIndex = 1;this._preButton.Click = new System.EventHandler(this._preButton_Click);this._preButton.MouseEnter = new System.EventHandler(this._preButton_MouseEnter);this._preButton.MouseLeave = new System.EventHandler(this._preButton_MouseLeave);// // _goTextBox// this._goTextBox.Font = new System.Drawing.Font("SimSun", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));this._goTextBox.Location = new System.Drawing.Point(96, 23);this._goTextBox.Name = "_goTextBox";this._goTextBox.Size = new System.Drawing.Size(48, 23);this._goTextBox.TabIndex = 2;this._goTextBox.Text = "";this._goTextBox.KeyPress = new System.Windows.Forms.KeyPressEventHandler(this._goTextBox_KeyPress);this._goTextBox.TextChanged = new System.EventHandler(this._goTextBox_TextChanged);// // _goButton// this._goButton.FlatStyle = System.Windows.Forms.FlatStyle.Popup;this._goButton.Image = ((System.Drawing.Image)(resources.GetObject("_goButton.Image")));this._goButton.Location = new System.Drawing.Point(144, 23);this._goButton.Name = "_goButton";this._goButton.Size = new System.Drawing.Size(24, 23);this._goButton.TabIndex = 3;this._goButton.Click = new System.EventHandler(this._goButton_Click);this._goButton.MouseEnter = new System.EventHandler(this._goButton_MouseEnter);this._goButton.MouseLeave = new System.EventHandler(this._goButton_MouseLeave);// // _nextButton// this._nextButton.FlatStyle = System.Windows.Forms.FlatStyle.Popup;this._nextButton.Image = ((System.Drawing.Image)(resources.GetObject("_nextButton.Image")));this._nextButton.Location = new System.Drawing.Point(48, 23);this._nextButton.Name = "_nextButton";this._nextButton.Size = new System.Drawing.Size(24, 23);this._nextButton.TabIndex = 4;this._nextButton.Click = new System.EventHandler(this._nextButton_Click);this._nextButton.MouseEnter = new System.EventHandler(this._nextButton_MouseEnter);this._nextButton.MouseLeave = new System.EventHandler(this._nextButton_MouseLeave);// // _lastButton// this._lastButton.FlatStyle = System.Windows.Forms.FlatStyle.Popup;this._lastButton.Image = ((System.Drawing.Image)(resources.GetObject("_lastButton.Image")));this._lastButton.Location = new System.Drawing.Point(72, 23);this._lastButton.Name = "_lastButton";this._lastButton.Size = new System.Drawing.Size(24, 23);this._lastButton.TabIndex = 5;this._lastButton.Click = new System.EventHandler(this._lastButton_Click);this._lastButton.MouseEnter = new System.EventHandler(this._lastButton_MouseEnter);this._lastButton.MouseLeave = new System.EventHandler(this._lastButton_MouseLeave);// // _currentPageLabel// this._currentPageLabel.Font = new System.Drawing.Font("SimSun", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));this._currentPageLabel.Location = new System.Drawing.Point(0, 0);this._currentPageLabel.Name = "_currentPageLabel";this._currentPageLabel.Size = new System.Drawing.Size(86, 23);this._currentPageLabel.TabIndex = 6;this._currentPageLabel.Text = "Current:1";this._currentPageLabel.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;// // _totalLabel// this._totalLabel.Location = new System.Drawing.Point(86, 0);this._totalLabel.Name = "_totalLabel";this._totalLabel.Size = new System.Drawing.Size(82, 23);this._totalLabel.TabIndex = 7;this._totalLabel.Text = "Total:1";this._totalLabel.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;// // ListViewPager// this.Controls.Add(this._totalLabel);this.Controls.Add(this._currentPageLabel);this.Controls.Add(this._lastButton);this.Controls.Add(this._nextButton);this.Controls.Add(this._goButton);this.Controls.Add(this._goTextBox);this.Controls.Add(this._preButton);this.Controls.Add(this._firstButton);this.Name = "ListViewPager";this.Size = new System.Drawing.Size(168, 46);this.ResumeLayout(false);}#endregion#endregion#region 事件控制private void _firstButton_Click(object sender, System.EventArgs e){if(FirstButton_Click != null){if(CurrentPageNum != 1){ FirstButton_Click(sender, new PagerEventArgs(CurrentPageNum, 1));Go2Page(1);}}}private void _preButton_Click(object sender, System.EventArgs e){if(PreButton_Click != null){if(CurrentPageNum > 1){ PreButton_Click(sender, new PagerEventArgs(CurrentPageNum, CurrentPageNum-1));Go2Page(CurrentPageNum - 1);}}}private void _nextButton_Click(object sender, System.EventArgs e){if(NextButton_Click != null){if(CurrentPageNum < MaxPageNum){ NextButton_Click(sender, new PagerEventArgs(CurrentPageNum, CurrentPageNum 1));Go2Page(CurrentPageNum 1);}}}private void _lastButton_Click(object sender, System.EventArgs e){if(LastButton_Click != null){if(CurrentPageNum != MaxPageNum){ LastButton_Click(sender, new PagerEventArgs(CurrentPageNum,MaxPageNum));Go2Page(MaxPageNum);}}}private void _goButton_Click(object sender, System.EventArgs e){if(GoButton_Click != null){ if (!VerifyInput()) { //MessageBox.Show("Input string is invalid.\r\n(Event)GoButton_Click(object,EventArgs)."); return; } if(CurrentPageNum != Convert.ToInt32(_goTextBox.Text)){GoButton_Click(sender,new PagerEventArgs(CurrentPageNum,Convert.ToInt32(_goTextBox.Text)));Go2Page(Convert.ToInt32(_goTextBox.Text));}}}private void _goTextBox_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e){if(e.KeyChar == 13){if(GoButton_Click != null){ if (!VerifyInput()) { //MessageBox.Show("Input string is invalid.\r\n(Event)GoButton_Click(object,EventArgs)."); return; }if(CurrentPageNum != Convert.ToInt32(_goTextBox.Text)){GoButton_Click(sender,new PagerEventArgs(CurrentPageNum,Convert.ToInt32(_goTextBox.Text)));Go2Page(Convert.ToInt32(_goTextBox.Text));}}}}#endregion#region Variblesprivate int _prePageNum = 1 ;private int _currentPageNum = 1;private int _maxPageNum =1; private int _goPageNum=-1;private Color _hoverColor = Color.AliceBlue;private Color _backColor = SystemColors.Control ; private string _currentText = "Current"; private string _totalText = "Total";#endregion#region 事件定义 public delegate void PreClickHandle(object sender, PagerEventArgs e); public delegate void FirstClickHandle(object sender, PagerEventArgs e); public delegate void NextClickHandle(object sender, PagerEventArgs e); public delegate void LastClickHandle(object sender, PagerEventArgs e);public delegate void GoToHandle(object sender,PagerEventArgs e);/// <summary>/// 上一页按钮事件/// </summary>[Category("Pager"),Description("上一页按钮事件")]public event PreClickHandle PreButton_Click ;/// <summary>/// 第一页按钮事件/// </summary>[Category("Pager"),Description("第一页按钮事件")]public event FirstClickHandle FirstButton_Click ;/// <summary>/// 下一页按钮事件/// </summary>[Category("Pager"),Description("下一页按钮事件")]public event NextClickHandle NextButton_Click ;/// <summary>/// 最后一页按钮事件/// </summary>[Category("Pager"),Description("最后一页按钮事件")]public event LastClickHandle LastButton_Click ;/// <summary>/// 跳到指定页按钮事件/// </summary>[Category("Pager"),Description("跳到指定页按钮事件")]public event GoToHandle GoButton_Click ;#endregion#region 属性[Category("Pager"),Description("Current Page Number."),DefaultValue(1)]public int CurrentPageNum{get{return _currentPageNum ;}} [Category("Pager"), Description("Max Page Number."), DefaultValue(1)]public int MaxPageNum{get{return _maxPageNum ;}set{_maxPageNum = value;_totalLabel.Text = _totalText ":" (value==0?"1":value.ToString()); if (value < _currentPageNum) { _currentPageNum = 1; _currentPageLabel.Text = _currentText ":1"; }}} [Category("Pager"), Description("Go Page Number."), DefaultValue(-1)] public int GoPageNum { get { //if (VerifyInput()) // return Convert.ToInt32(_goTextBox.Text); //else // return -1;return _goPageNum ; } set { _goTextBox.Text = value.ToString();_goPageNum = value ; } }[Category("Pager"), Description("Button's back color when mouse hover on it.")]public Color ButtonHoverColor{get{return _hoverColor ;}set{_hoverColor = value;}}[Category("Pager"), Description("Button's back color when mouse hover on it.")]public Color ButtonBackColor{get{return _backColor ;}set{_backColor = value ;_firstButton.BackColor = value ;_preButton.BackColor = value ;_nextButton.BackColor = value;_lastButton.BackColor = value ;_goButton.BackColor = value;}} [Category("Pager"), DefaultValue("Current"),Description("'Current' text,for multi-lingual.")] public string CurrentText { get { return _currentText; } set { _currentText = value; string lbl = _currentPageLabel.Text; _currentPageLabel.Text = value ":" lbl.Substring(lbl.IndexOf(":") 1); } } [Category("Pager"), DefaultValue("Total"), Description("'Total' text,for multi-lingual.")] public string TotalText { get { return _totalText; } set { _totalText = value; string lbl = _totalLabel.Text; _totalLabel.Text = value ":" lbl.Substring(lbl.IndexOf(":") 1); } }#endregion#region 内部方法private void Go2Page(int page){if(page < 1 || page > MaxPageNum)throw new Exception("Out of the page number.\r\n(Method)Go2Page(int).") ;_prePageNum = _currentPageNum ;_currentPageNum = page ;_currentPageLabel.Text = _currentText ":" page.ToString(); }private bool VerifyInput(){try{int p = Convert.ToInt32(_goTextBox.Text); if(p < 1 || p > MaxPageNum)return false ;return true ;}catch{return false ;}}private void HoverIt(Button btn){btn.BackColor = _hoverColor ;}private void LeaveIt(Button btn){btn.BackColor = _backColor ;}#endregion#region 公共方法[Description("Use it when operate failed in the event.")]public void RollBackPage(){if(_prePageNum >= 1 && _prePageNum <= MaxPageNum)Go2Page(_prePageNum);} public void SetCurrentPage(int page) { if(page >= 1 && page <= MaxPageNum) { Go2Page(page); } } public void PerformClickFirstButton() { //_firstButton_Click(_firstButton, new EventArgs()); _firstButton.PerformClick(); }/// <summary>/// 获取ListView所能显示的最大记录数（无滚动条）/// </summary>/// <param name="lv"></param>/// <returns></returns>public int GetListViewPageRecordNum(ref ListView lv){int _itemHeight = 0;if(lv.Items.Count > 0)_itemHeight = RectangleToClient(lv.Items[0].Bounds).Height;else{lv.Items.Add(new ListViewItem(new string[]{"0","0"})) ;_itemHeight = RectangleToClient(lv.Items[0].Bounds).Height;lv.Items.Clear() ;}//RECT itemRect = new RECT();//SendMessage(lv.Handle, (int)HeaderControlMessages.HDM_GETITEMRECT, 0, ref itemRect);int columnHeaderHeight = 0;//itemRect.bottom - itemRect.top;//if(columnHeaderHeight == 0)columnHeaderHeight = _itemHeight*2;//用两倍数据行的高度作为列名高度//计算listview最多能够容纳的记录条数（不显示滚动条的情况下）int rnum = (lv.RectangleToClient(new Rectangle(lv.Location.X, lv.Location.Y, lv.Width, lv.Height)).Height - columnHeaderHeight) / _itemHeight ;return rnum;}//[DllImport("User32.dll", CharSet = CharSet.Auto)]//public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, ref RECT r);#endregion#region 其他控制 private void _goTextBox_TextChanged(object sender, EventArgs e) { if(_goTextBox.Text.Trim () != "") { try { int i = Convert.ToInt32(_goTextBox.Text); _goPageNum = i; } catch { _goPageNum = -1; } } }private void _firstButton_MouseEnter(object sender, System.EventArgs e){HoverIt(_firstButton) ;}private void _firstButton_MouseLeave(object sender, System.EventArgs e){LeaveIt(_firstButton) ;}private void _preButton_MouseEnter(object sender, System.EventArgs e){HoverIt(_preButton) ;}private void _preButton_MouseLeave(object sender, System.EventArgs e){LeaveIt(_preButton) ;}private void _nextButton_MouseEnter(object sender, System.EventArgs e){HoverIt(_nextButton) ;}private void _nextButton_MouseLeave(object sender, System.EventArgs e){LeaveIt(_nextButton) ;}private void _lastButton_MouseEnter(object sender, System.EventArgs e){HoverIt(_lastButton) ;}private void _lastButton_MouseLeave(object sender, System.EventArgs e){LeaveIt(_lastButton) ;}private void _goButton_MouseEnter(object sender, System.EventArgs e){HoverIt(_goButton) ;}private void _goButton_MouseLeave(object sender, System.EventArgs e){LeaveIt(_goButton) ;}#endregion}public class PagerEventArgs:EventArgs{public PagerEventArgs(int op,int np){OldPage = op;NewPage = np;}public int OldPage=0;public int NewPage=0;}/// <summary>/// ListViewPagerDesigner Class/// </summary>public class ListViewPagerDesigner : System.Windows.Forms.Design.ControlDesigner{public ListViewPagerDesigner(){} public override SelectionRules SelectionRules{get{SelectionRules rules = SelectionRules.Visible | SelectionRules.Moveable ;return rules;}}}//[StructLayout(LayoutKind.Sequential)]//public struct RECT//{//public int left;//public int top;//public int right;//public int bottom;////public static implicit operator Rectangle(RECT rect)//{//return new Rectangle(rect.left, rect.top,//rect.right - rect.left, rect.bottom - rect.top);//}//}//public enum HeaderControlMessages : int//{//HDM_FIRST = 0x1200,//HDM_GETITEMRECT = (HDM_FIRST 7),//HDM_HITTEST = (HDM_FIRST 6),//HDM_SETIMAGELIST = (HDM_FIRST 8),//HDM_GETITEMW = (HDM_FIRST 11),//HDM_ORDERTOINDEX = (HDM_FIRST 15)//}}