C# winform自定义翻页控件详解

using System;using System.Collections.Generic;using System.ComponentModel;using System.Drawing;using System.Data;using System.Linq;using System.Text;using System.Windows.Forms;namespace Demo{ public partial class ucPageTurn : UserControl, IMessageFilter {  private const int SIZE_HEIGHT = 40;  private const int SIZE_MINWIDTH = 84;  private const int SIZE_INFO_MINWIDTH = 188;  public ucPageTurn()  {   Application.AddMessageFilter(this);    InitializeComponent();   this.BorderStyle = System.Windows.Forms.BorderStyle.None;   this.MinimumSize = new Size(SIZE_MINWIDTH, 0);   this.Disposed += new EventHandler(ucPages_Disposed);      //this.MouseClick += new MouseEventHandler(ucKeyboard_Close);   PageChanged += new PageChangedHandle(new PageChangedHandle((oldPage, newPage, e) => { }));   InputGotFocus += new InputFocusHandle(new InputFocusHandle((sender, e) => { }));    //InputLostFocus += new InputFocusHandle(new InputFocusHandle((sender, e) => { }));   InputGotFocus += new InputFocusHandle(new InputFocusHandle((sender, e) => { }));    InputLostFocus += new InputFocusHandle(new InputFocusHandle((sender, e) => { }));   InputMouseDown += new InputMouseHandle(new InputMouseHandle((sender, e) => { }));   InputMouseUp += new InputMouseHandle(new InputMouseHandle((sender, e) => { }));   InputTextClick += new EventHandler(new EventHandler((sender, e) => { }));   InputKeyDown += new InputKeyHandle(new InputKeyHandle((sender, e) => { }));   InputKeyUp += new InputKeyHandle(new InputKeyHandle((sender, e) => { }));   InputKeyPress += new InputKeyPressHandle(new InputKeyPressHandle((sender, e) => { }));   InputTextChanged += new EventHandler(new EventHandler((sender, e) => { }));   this.BackColor = Color.White;   labPageInfo.BackColor = this.BackColor;   this.Resize += new EventHandler(ucPages_Resize);   //labPageInfo.MouseDoubleClick += new MouseEventHandler(labPageInfo_MouseDoubleClick);   pbPage_Prev.MouseDown += new MouseEventHandler(pbPage_Prev_MouseDown);   pbPage_Prev.MouseUp += new MouseEventHandler(pbPage_Prev_MouseUp);   pbPage_Next.MouseDown += new MouseEventHandler(pbPage_Next_MouseDown);   pbPage_Next.MouseUp += new MouseEventHandler(pbPage_Next_MouseUp);   pbPage_Begin.MouseDown += new MouseEventHandler(pbPage_Begin_MouseDown);   pbPage_Begin.MouseUp += new MouseEventHandler(pbPage_Begin_MouseUp);   pbPage_End.MouseDown += new MouseEventHandler(pbPage_End_MouseDown);   pbPage_End.MouseUp += new MouseEventHandler(pbPage_End_MouseUp);   txtPageInfo.TextChanged += new EventHandler(txtPageInfo_TextChanged);   txtPageInfo.GotFocus += new EventHandler(txtPageInfo_GotFocus);   txtPageInfo.Click += new EventHandler(txtPageInfo_Click);   txtPageInfo.Text = m_strText;   txtPageInfo.Visible = m_blnShowTxtPageInfo;   m_blnIsAutoJump = false;   m_timerAutoPage.Enabled = false;   m_timerAutoPage.Interval = WAIT_FOR_AUTOJUMP;   m_timerAutoPage.Tick += new EventHandler(timerAutoPage_Tick);  }  private void ucPages_Load(object sender, EventArgs e)  {   setStatus();  }  private void ucPages_Disposed(object sender, EventArgs e)  {   Application.RemoveMessageFilter(this);  }  public bool PreFilterMessage(ref System.Windows.Forms.Message MyMessage)  {   if (MyMessage.Msg == 0x204 || MyMessage.Msg == 0x205)   {    return true;   }   return false;  }  //设置控件的自适应大小  private void ucPages_Resize(object sender, EventArgs e)  {   this.Height = SIZE_HEIGHT;   pbPage_Begin.Location = new Point(0, 0);   pbPage_Begin.Size = new Size(SIZE_HEIGHT, SIZE_HEIGHT);   pbPage_Prev.Location = new Point(pbPage_Begin.Width + 2, pbPage_Begin.Top);   pbPage_Prev.Size = pbPage_Begin.Size;   pbPage_End.Location = new Point(this.Width - pbPage_End.Width, pbPage_Begin.Top);   pbPage_End.Size = pbPage_Begin.Size;   pbPage_Next.Location = new Point(this.Width - pbPage_Next.Width - pbPage_End.Width - 2, pbPage_Begin.Top);   pbPage_Next.Size = pbPage_Begin.Size;   if (this.Width < SIZE_INFO_MINWIDTH)   {    labPageInfo.Visible = false;    txtPageInfo.Visible = false;   }   else   {    labPageInfo.Location = new Point(pbPage_Prev.Width + pbPage_Prev.Width + 3, 2);    labPageInfo.Size = new Size(pbPage_Next.Left - labPageInfo.Left - 3, pbPage_Prev.Height);        txtPageInfo.Location = new Point(pbPage_Prev.Left + pbPage_Prev.Width + 5, 11);    //txtPageInfo.Size = new Size(pbPage_Next.Left - labPageInfo.Left , 15);    if (m_blnShowLabel && !labPageInfo.Visible) labPageInfo.Visible = true;    if (m_blnShowLabel && !txtPageInfo.Visible) txtPageInfo.Visible = true;   }   if (m_blnShowTxtPageInfo)   {    txtPageInfo.Size = new Size(79, labPageInfo.Height);   }   else   {    txtPageInfo.Size = new Size(0, labPageInfo.Height);   }  }  //点击lablelabPageInfo 显示txtPageInfo  private void labPageInfo_Click(object sender, EventArgs e)  {   if (!txtPageInfo.Visible)   {    showJumpPageStatus(true);    InputTextClick(txtPageInfo, new EventArgs());   }   else {    showJumpPageStatus(false);   }  }  public void showJumpPageStatus(Boolean isShow)  {   if (isShow)   {    txtPageInfo.Visible = true;    txtPageInfo.Text = string.Empty;    txtPageInfo.Focus();   }   else   {    txtPageInfo.Visible = false;   }  }  //上一页  private void pbPage_Prev_MouseDown(object sender, MouseEventArgs e)  {   pbPage_Prev.Image = global::Pku.CFM.Controls.Properties.Resources.Page_Prev_D;   m_blnIsPrevDown = true;   m_timerAutoPage.Enabled = true;  }  private void pbPage_Prev_MouseUp(object sender, MouseEventArgs e)  {   pbPage_Prev.Image = global::Pku.CFM.Controls.Properties.Resources.Page_Prev_N;   m_blnIsPrevDown = false;   if (m_blnIsAutoJump)   {    leaveAutoJumpMode();    return;   }   m_timerAutoPage.Enabled = false;   if (1 == m_intCurPageIndex) return;   int intOldPage = m_intCurPageIndex;   m_intCurPageIndex--;   setStatus();   PageChanged(intOldPage, m_intCurPageIndex, new EventArgs());  }  //下一页  private void pbPage_Next_MouseDown(object sender, MouseEventArgs e)  {     pbPage_Next.Image = global::Pku.CFM.Controls.Properties.Resources.Page_Next_D;   m_blnIsNextDown = true;   m_timerAutoPage.Enabled = true;  }  private void pbPage_Next_MouseUp(object sender, MouseEventArgs e)  {   pbPage_Next.Image = global::Pku.CFM.Controls.Properties.Resources.Page_Next_N;   m_blnIsNextDown = false;   if (m_blnIsAutoJump)   {    leaveAutoJumpMode();    return;   }   m_timerAutoPage.Enabled = false;   if (m_intPageCount == m_intCurPageIndex) return;   int intOldPage = m_intCurPageIndex;   m_intCurPageIndex++;   setStatus();   PageChanged(intOldPage, m_intCurPageIndex, new EventArgs());  }  //首页  private void pbPage_Begin_MouseDown(object sender, MouseEventArgs e)  {      pbPage_Begin.Image = global::Pku.CFM.Controls.Properties.Resources.PageView_Begin_D;   m_blnIsBeginDown = false;   m_timerAutoPage.Enabled = true;  }  private void pbPage_Begin_MouseUp(object sender, MouseEventArgs e)  {   pbPage_Begin.Image = global::Pku.CFM.Controls.Properties.Resources.PageView_Begin_N;   m_blnIsBeginDown = false;   int intOldPage = m_intCurPageIndex;   if (1 == m_intCurPageIndex) return;   m_intCurPageIndex = 1;      setStatus();   PageChanged(intOldPage, m_intCurPageIndex, new EventArgs());   m_blnIsAutoJump = false;   m_timerAutoPage.Stop();  }  //尾页  private void pbPage_End_MouseDown(object sender, MouseEventArgs e)  {      pbPage_End.Image = global::Pku.CFM.Controls.Properties.Resources.PageView_End_N;   m_blnIsEndDown = true;   m_timerAutoPage.Enabled = true;  }  private void pbPage_End_MouseUp(object sender, MouseEventArgs e)  {   pbPage_End.Image = global::Pku.CFM.Controls.Properties.Resources.PageView_End_D;   m_blnIsEndDown = false;   int intOldPage = m_intCurPageIndex;   if (m_intCurPageIndex == m_intPageCount)return;   m_intCurPageIndex = m_intPageCount;      setStatus();   PageChanged(intOldPage, m_intCurPageIndex, new EventArgs());   m_blnIsAutoJump = false;   m_timerAutoPage.Stop();     }    //翻页按钮的状态  private void setStatus()  {   //如果页数为0，翻页的按钮全部不显示   if (m_intPageCount <= 0)   {    labPageInfo.Text = "";    pbPage_Prev.Visible = false;    pbPage_Next.Visible = false;    pbPage_Begin.Visible = false;    pbPage_End.Visible = false;    txtPageInfo.Visible = false;   }   else   {    //如果页数为1，翻页的按钮不显示    if (1 == m_intPageCount)    {     labPageInfo.Text = "";     pbPage_Prev.Visible = false;     pbPage_Next.Visible = false;     pbPage_Begin.Visible = false;     pbPage_End.Visible = false;     txtPageInfo.Visible = false;    }    else    {     //只显示下一页和最后一页的按钮     if (m_intCurPageIndex <= 1)     {      m_intCurPageIndex = 1;      pbPage_Prev.Visible = false;      pbPage_Next.Visible = true;      pbPage_Begin.Visible = false;      pbPage_End.Visible = true;      txtPageInfo.Visible = false;     }     //只显示上一页和首页的按钮     else if (m_intCurPageIndex >= m_intPageCount)     {      m_intCurPageIndex = m_intPageCount;      pbPage_Prev.Visible = true;      pbPage_Next.Visible = false;      pbPage_Begin.Visible = true ;      pbPage_End.Visible = false;      txtPageInfo.Visible = false;     }      //否则按钮全部显示     else     {      pbPage_Prev.Visible = true;      pbPage_Next.Visible = true;      pbPage_Begin.Visible = true;      pbPage_End.Visible = true;      txtPageInfo.Visible = false;     }     labPageInfo.Text = String.Format("第{0}页 /共{1}页", m_intCurPageIndex, m_intPageCount);     txtPageInfo.Text = String.Format("{0}", m_intCurPageIndex);    }   }  }  private void timerAutoPage_Tick(object sender, EventArgs e)  {   if ((m_blnIsNextDown && m_intCurPageIndex >= m_intPageCount) || (m_blnIsPrevDown && m_intCurPageIndex <= 1) || (m_blnIsEndDown && m_intCurPageIndex >=m_intPageCount) || (m_blnIsBeginDown && m_intCurPageIndex<=1))   {    leaveAutoJumpMode();    return;   }   if (!m_blnIsAutoJump) m_timerAutoPage.Interval = AUTOJUMP_INV;   int intOldPage = m_intCurPageIndex;   if (m_blnIsNextDown) m_intCurPageIndex++;   if (m_blnIsPrevDown) m_intCurPageIndex--;   setStatus();   PageChanged(intOldPage, m_intCurPageIndex, new EventArgs());   if ((m_blnIsNextDown && m_intCurPageIndex >= m_intPageCount) || (m_blnIsPrevDown && m_intCurPageIndex <= 1)||(m_blnIsEndDown && m_intCurPageIndex >= m_intPageCount) || (m_blnIsBeginDown && m_intCurPageIndex <= 1))   {    leaveAutoJumpMode();   }   else   {    m_blnIsAutoJump = true;   }  }  private void leaveAutoJumpMode()  {   m_blnIsAutoJump = false;   m_timerAutoPage.Stop();   m_timerAutoPage.Enabled = false;   m_timerAutoPage.Interval = WAIT_FOR_AUTOJUMP;  }  private int m_intCurPageIndex = 0;  //当前页面  public int CurPageIndex  {   get { return m_intCurPageIndex; }   set   {    if (value < 0 || (m_intPageCount> 0 && value > m_intPageCount)) return;    int intOldPage = m_intCurPageIndex;    m_intCurPageIndex = value;    setStatus();    if (!m_blnIgnoreChange) PageChanged(intOldPage, m_intCurPageIndex, new EventArgs());    m_blnIsAutoJump = false;    m_timerAutoPage.Stop();    m_timerAutoPage.Enabled = false;   }  }  //计算总页数  public int PageCount  {   get { return m_intPageCount; }   set    {     m_intPageCount = value;    if (m_intPageCount > 0)    {     if (m_intCurPageIndex <= 0) m_intCurPageIndex = 0;     if (m_intCurPageIndex > m_intPageCount)     {      m_intCurPageIndex = m_intPageCount;     }    }    else    {     m_intCurPageIndex = 0;    }    setStatus();   }  }  private Boolean m_blnIgnoreChange = false;  public Boolean IgnoreChange  {   get { return m_blnIgnoreChange; }   set { m_blnIgnoreChange = value; }  }  private Boolean m_blnShowLabel = true;  public Boolean ShowLabel  {   get { return m_blnShowLabel; }   set { m_blnShowLabel = value; labPageInfo.Visible = value; }  }  private void txtPageInfo_TextChanged(object sender, EventArgs e)  {   if (m_blnIgnTextChange) return;   m_blnIgnTextChange = true;   InputTextChanged(sender, e);  }  private void txtPageInfo_GotFocus(object sender, EventArgs e)  {   InputGotFocus(this, e);  }  private void txtPageInfo_LostFocus(object sender, EventArgs e)  {   InputLostFocus(this, e);  }  private void txtPageInfo_MouseDown(object sender, MouseEventArgs e)  {   InputMouseDown(sender, e);  }  private void txtPageInfo_MouseUp(object sender, MouseEventArgs e)  {   InputMouseUp(sender, e);  }  private void txtPageInfo_Click(object sender, EventArgs e)  {   InputTextClick(sender, e);  }  private void txtPageInfo_KeyDown(object sender, KeyEventArgs e)  {   InputKeyDown(sender, e);  }  private void txtPageInfo_KeyUp(object sender, KeyEventArgs e)  {   InputKeyUp(sender, e);  }  private void txtPageInfo_KeyPress(object sender, KeyPressEventArgs e)  {   InputKeyPress(sender, e);  }  private string m_strText = "";  public String Text  {   get { return m_strText; }   set { m_strText = value; }  }  private System.Windows.Forms.Timer m_timerAutoPage = new Timer();  private bool m_blnIsPrevDown = false;  private bool m_blnIsNextDown = false;  private bool m_blnIsBeginDown = false;  private bool m_blnIsEndDown = false;  private bool m_blnIsAutoJump = false;  public delegate void PageChangedHandle(int oldPage, int newPage, EventArgs e);  public event PageChangedHandle PageChanged;  private const int WAIT_FOR_AUTOJUMP = 500;  private const int AUTOJUMP_INV = 500;  private int m_intPageCount = 0;  protected String m_strErrorText = "";  public String ErrorText  {   get { return m_strErrorText; }   set { m_strErrorText = value; }  }  /// <summary>  /// 键盘控件的父对象  /// </summary>  private Control m_keyboardParent = null;  public Control KeyboardParent  {   get { return m_keyboardParent; }   set { m_keyboardParent = value; }  }    /// <summary>  /// 是否显示输入翻页框按钮  /// </summary>  private Boolean m_blnShowTxtPageInfo = true;  public Boolean ShowTxtPageInfo  {   get { return m_blnShowTxtPageInfo; }   set { m_blnShowTxtPageInfo = value; txtPageInfo.Visible = value; }  }  //public bool IsPages { get; set; }  private bool m_blnIgnTextChange = false;  private Boolean m_blnIsInputFocus = false;    //public event EventHandler InputEnterPressed;  //public event EventHandler InputClearPressed;  public delegate void InputFocusHandle(object sender, EventArgs e);  public event InputFocusHandle InputGotFocus;  public event InputFocusHandle InputLostFocus;  public delegate void InputMouseHandle(object sender, MouseEventArgs e);  public event InputMouseHandle InputMouseDown;  public event InputMouseHandle InputMouseUp;  public event EventHandler InputTextClick;  public delegate void InputKeyHandle(object sender, KeyEventArgs e);  public event InputKeyHandle InputKeyDown;  public event InputKeyHandle InputKeyUp;  //public event InputKeyHandle InputTextKeyBoardEnter;  public delegate void InputKeyPressHandle(object sender, KeyPressEventArgs e);  public event InputKeyPressHandle InputKeyPress;  public event EventHandler InputTextChanged;    public TextBox InputTextBox  {   set { txtPageInfo=value; }   get { return txtPageInfo; }  }  public String InputText  {   get   {    if (m_strText == txtPageInfo.Text || String.IsNullOrWhiteSpace(txtPageInfo.Text))    {     return String.Empty;    }    else    {     return txtPageInfo.Text;    }   }   set   {    if (m_blnIsInputFocus)    {     txtPageInfo.Text = value;    }    else    {     if (String.IsNullOrWhiteSpace(value))     {      m_blnIgnTextChange = true;      txtPageInfo.Text = m_strText;      m_blnIgnTextChange = false;     }    }   }  }  public void setInputText(String text)  {   txtPageInfo.Text = text;  } }}

//在initControls里面添加textbox输入框的事件 private void initControls()   {  ucPages.InputTextBox.KeyPress +=new KeyPressEventHandler(ucPages_KeyPress);   ucPages.PageChanged += new Pku.CFM.Controls.ucPageTurn.PageChangedHandle(ucPages_PageChanged);} private void ucPages_KeyPress(object sender, KeyPressEventArgs e)  {   if (13 == e.KeyChar)   {    int intReturn = SysDefine.NOTHING;    String strInputText = ucPages.Text.ToUpper();    if (SysDefine.FAILED == intReturn)    {     MessageBox.Show(this.ErrorText, "信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);    }        String pageInputText = ucPages.InputText;    int page = 0;    try    {     page = int.Parse(pageInputText);    }    catch    {     page = 1;    }    ucPages.CurPageIndex = page;    if (SysDefine.FAILED == refreshList(page, strInputText))    {     MessageBox.Show(this.ErrorText, "信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);    }   }  } private void ucPages_PageChanged(int oldPage, int newPage, EventArgs e)  {   int intReturn = SysDefine.NOTHING;   String strInputText = ucPages.Text.ToUpper();   intReturn = refreshList(newPage, strInputText);   if (SysDefine.FAILED == intReturn)   {    MessageBox.Show(this.ErrorText, "信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);    return;   }  }