winform 分页控件

程序很简单，用的时候需要提供pageCount（页数），pageShow(显示的页数），currPage（当前页号）
控件提供一个自定义的事件LnkLblClicked，当用户点击页面链接的时候就会触发这个事件。下面是程序的源码。

using System;

using System.Collections;

using System.ComponentModel;

using System.Drawing;

using System.Data;

using System.Windows.Forms;

namespace ActiveButton

/// Summary description for PageControl.

/// </summary>

public class PageControl : System.Windows.Forms.UserControl

/// Required designer variable.

/// </summary>

private int pageCount;

private int currPage;

// private int pageSize;

private int pageShow;

private int xDistance;

private bool bolPrev;

private bool bolNext;

private int start, end;

private EventHandler lnkLblClicked;

public event EventHandler LnkLblClicked

add+= value;}

remove-= value;}

}

protected virtual void OnLnkLblClicked(EventArgs e)

if (lnkLblClicked != null)

lnkLblClicked(this,e);

}

public int PageCount

get

set= value;}

}

public int CurrPage

get

set= value;}

}

// public int PageSize

// {

// get{return pageSize;}

// set{pageSize = value;}

// }

public int PageShow

get

set= value;}

}

public int XDistance

get

set= value;}

}

#endregion

private System.ComponentModel.Container components = null;

public PageControl()

// This call is required by the Windows.Forms Form Designer.

InitializeComponent();

// TODO: Add any initialization after the InitializeComponent call

}

public PageControl(int pageCount,int pageSize,int pageShow):this()

this.pageCount = pageCount;

// this.pageSize = pageSize;

this.pageShow = pageShow;

}

/// Clean up any resources being used.

/// </summary>

protected override void Dispose( bool disposing )

if( disposing )

if(components != null)

}

base.Dispose( disposing );

}

#region Component Designer generated code

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

this.SuspendLayout();

// PageControl

this.Name = "PageControl";

this.Size = new System.Drawing.Size(320, 24);

this.Load += new System.EventHandler(this.PageControl_Load);

this.ResumeLayout(false);

}

#endregion

private void PageControl_Load(object sender, System.EventArgs e)

= 0;

bolPrev = pageCount > pageShow;

// currPage = pageCount;

end = pageCount;

start = Math.Max(1,end - pageShow + 1);

DrawControl();

}

private void DrawControl()

this.Controls.Clear();

System.Windows.Forms.Label lblPageCount = new Label();

lblPageCount.Text = "共" + pageCount + "页";

this.AddControl(lblPageCount,new Point(8,8),new Size(40,16));

int x = lblPageCount.Bounds.Right;

int y = lblPageCount.Location.Y;

System.Windows.Forms.Control currCtl = lblPageCount;

//calculate page start and end

int pageShowCount = Math.Min(pageCount,pageShow);

// start = Math.Max(1,currPage - pageShow/2);

// end = start + pageShowCount -1;

// if (pageCount - currPage < pageShow/2)

// {

// end = pageCount;

// start = pageCount - pageShowCount + 1;

// }

bolPrev = start != 1;

bolNext = end != pageCount;

if (bolPrev)

System.Windows.Forms.LinkLabel lblPrev = new LinkLabel();

lblPrev.Text = "前一页";

x += xDistance;

((LinkLabel)lblPrev).LinkClicked += new LinkLabelLinkClickedEventHandler(lblCtl_Clicked);

this.AddControl(lblPrev,new Point(x,y),new Size(45, 16));

currCtl = lblPrev;

}

for (int i = start; i <= end; i ++)

x = currCtl.Bounds.Right;

System.Windows.Forms.Control lblCtl = null;

if ( i == currPage)

lblCtl = new System.Windows.Forms.Label();

else

= new System.Windows.Forms.LinkLabel();

((LinkLabel)lblCtl).LinkClicked += new LinkLabelLinkClickedEventHandler(lblCtl_Clicked);

}

lblCtl.Text = i.ToString();

x += xDistance;

this.AddControl(lblCtl,new Point(x,y),new Size(10, 16));

currCtl = lblCtl;

}

if (bolNext)

System.Windows.Forms.LinkLabel lblNext = new LinkLabel();

lblNext.Text = "后一页";

x = currCtl.Bounds.Right;

x += xDistance;

((LinkLabel)lblNext).LinkClicked += new LinkLabelLinkClickedEventHandler(lblCtl_Clicked);

this.AddControl(lblNext,new Point(x,y),new Size(45, 16));

}

private void AddControl(Control ctlObj,Point point,Size size)

= ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)

| System.Windows.Forms.AnchorStyles.Left)));

ctlObj.Location = point;

int x = ctlObj.Text.Length * 10;

if (ctlObj.Text.IndexOf("页") > 0 )

if (ctlObj.Text.IndexOf("共") >= 0)

x += 10;

else

x *= 2;

}

ctlObj.Size = new Size(x,16);

this.Controls.Add(ctlObj);

}

private void lblCtl_Clicked(object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e)

if (sender is LinkLabel)

try

string lblText = ((LinkLabel)sender).Text;

if (lblText == "前一页")

= start -1;

start = Math.Max(1,end - pageShow + 1);

currPage = end;

}

else if (lblText == "后一页")

= end + 1;

end = Math.Min(pageCount,start + pageShow -1);

currPage = end;

}

else

int page = Convert.ToInt32(lblText);

currPage = page;

}

this.DrawControl();

this.OnLnkLblClicked(e);

}

catch

}

public void ReDraw()

= pageCount > pageShow;

// currPage = pageCount;

end = pageCount;

start = Math.Max(1,end - pageShow + 1);

this.DrawControl();

this.OnLnkLblClicked(null);

}

不做与做得最大区别是：后者拥有对前者的评论权