标题: .NET自定义分页控件PageNavigator v1.0(源码)
作者: dnawo
日期: 2008-09-02 03:26 AM
分类: Web编程
内容: 1.使用说明：
1).页面中添加本控件，假设实例名称为PageNavigator1;
2).在Page_Load加入：PageNavigator1.OnPageChange += new PageChangeHandler(PageNavigator1_PageChange);
3).在Page_Load的if (!IsPostBack){}中对控件的RecordCount、PageSize和PageIndex属性赋值,注意PageIndex的赋值应放在最后;
4).定义一个PageNavigator1_PageChange函数：
protected void PageNavigator1_PageChange(object sender, int PageIndex)
{
PageNavigator1.PageIndex = PageIndex;
}
2.PageNavigator分页控件源码：
PageNavigator.ascx:
复制内容到剪贴板 程序代码<%@ Control Language="C#" AutoEventWireup="true" CodeFile="PageNavigator.ascx.cs" Inherits="PageNavigator" %>
<!-- PageNavigator V1.0 for VS2005 & VS2008 Author:dnawo Web:http://www.mzwu.com/ -->
<!-- 1.分页控件各属性(总记录数、每页记录数、当前页数、总页数),可根据需要选择显示与否 -->
<asp:Label runat="server" ID="LblRecordCount" Visible="true" />
<asp:Label runat="server" ID="LblPageSize" Visible="true" />
<asp:Label runat="server" ID="LblPageIndex" Visible="true" />
<asp:Label runat="server" ID="LblPageCount" Visible="true"/>
<!-- 属性完毕 -->
<!-- 2.分页控件按钮 -->
<asp:LinkButton ID="LnkBtnFirst" runat="server" CommandName="Page" OnClick="First_Click">首页</asp:LinkButton>
<asp:LinkButton ID="LnkBtnPrevious" runat="server" CommandName="Page" OnClick="Previous_Click">上一页</asp:LinkButton>
<asp:LinkButton ID="LnkBtnNext" runat="server" CommandName="Page" OnClick="Next_Click">下一页</asp:LinkButton>
<asp:LinkButton ID="LnkBtnLast" runat="server" CommandName="Page" OnClick="Last_Click">尾页</asp:LinkButton>
<asp:textbox ID="txtNewPageIndex" runat="server" width="20px"/>
<asp:Button ID="BtnGoto" runat="server" CommandName="Page" OnClick="Goto_Click" Text="GO" />
<!-- 按钮完毕 -->
<!-- PageNavigator V1.0 for VS2005 & VS2008 End -->
PageNavigator.ascx.cs:
复制内容到剪贴板 程序代码using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public delegate void PageChangeHandler(object send, int nPageIndex);
/// <summary>
/// 分页控件PageNavigator v1.0
/// </summary>
/// <remarks>
/// 使用说明：
/// 1.页面中添加本控件，假设实例名称为PageNavigator1;
/// 2.在Page_Load加入：PageNavigator1.OnPageChange += new PageChangeHandler(PageNavigator1_PageChange);
/// 3.在Page_Load的if (!IsPostBack){}中对控件的RecordCount、PageSize和PageIndex属性赋值,注意PageIndex的赋值应放在最后;
/// 4.定义一个PageNavigator1_PageChange函数：
/// protected void PageNavigator1_PageChange(object sender, int PageIndex)
/// {
/// PageNavigator1.PageIndex = PageIndex;
/// }
///
/// 联系我们：
/// Author:dnawo
/// Web:http://www.mzwu.com/
/// QQ:270250392
/// </remarks>
public partial class PageNavigator : System.Web.UI.UserControl
{
public event PageChangeHandler OnPageChange;
private int _RecordCount = 0;
private int _PageSize = 10;
private int _PageIndex = 1;
private int _PageCount = 1;
protected void Page_Load(object sender, EventArgs e)
{
//初始化
if (!string.IsNullOrEmpty(LblRecordCount.Text))
_RecordCount = int.Parse(this.LblRecordCount.Text);
if (!string.IsNullOrEmpty(LblPageSize.Text))
_PageSize = int.Parse(this.LblPageSize.Text);
if (!string.IsNullOrEmpty(LblPageCount.Text))
_PageCount = int.Parse(this.LblPageCount.Text);
}
#region 分页控件属性
/// <summary>
/// 属性：总记录数
/// </summary>
public int RecordCount
{
get
{
return int.Parse(this.LblRecordCount.Text);
}
set
{
_RecordCount = value;
this.LblRecordCount.Text = _RecordCount.ToString();
if (_RecordCount % _PageSize == 0)
{
_PageCount = _RecordCount / _PageSize;
this.LblPageCount.Text = _PageCount.ToString();
}
else
{
_PageCount = (_RecordCount - _RecordCount % _PageSize) / _PageSize + 1;
this.LblPageCount.Text = _PageCount.ToString();
}
}
}
/// <summary>
/// 属性：总记录数
/// </summary>
public int PageSize
{
get
{
return int.Parse(this.LblPageSize.Text);
}
set
{
_PageSize = value;
this.LblPageSize.Text = _PageSize.ToString();
if (_RecordCount % _PageSize == 0)
{
_PageCount = _RecordCount / _PageSize;
this.LblPageCount.Text = _PageCount.ToString();
}
else
{
_PageCount = (_RecordCount - _RecordCount % _PageSize) / _PageSize + 1;
this.LblPageCount.Text = _PageCount.ToString();
}
}
}
/// <summary>
/// 属性：当前页数
/// </summary>
public int PageIndex
{
get
{
return int.Parse(this.LblPageIndex.Text);
}
set
{
_PageIndex = value;
this.txtNewPageIndex.Text = this.LblPageIndex.Text = _PageIndex.ToString();
if (_PageIndex < 2)
{
this.LnkBtnFirst.Enabled = false;
this.LnkBtnPrevious.Enabled = false;
}
else
{
this.LnkBtnFirst.Enabled = true;
this.LnkBtnPrevious.Enabled = true;
}
if (_PageIndex >= _PageCount)
{
this.LnkBtnNext.Enabled = false;
this.LnkBtnLast.Enabled = false;
}
else
{
this.LnkBtnNext.Enabled = true;
this.LnkBtnLast.Enabled = true;
}
}
}
/// <summary>
/// 属性：总页数(只读)
/// </summary>
public int PageCount
{
get
{
return int.Parse(this.LblPageCount.Text);
}
}
#endregion
#region 分页控件事件
/// <summary>
/// 首页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void First_Click(object sender, EventArgs e)
{
try
{
OnPageChange(sender, 1);
}
catch { }
}
/// <summary>
/// 上一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Previous_Click(object sender, EventArgs e)
{
try
{
int n = Convert.ToInt32(this.LblPageIndex.Text);
n--;
OnPageChange(sender, n);
}
catch
{
throw;
}
}
/// <summary>
/// 下一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Next_Click(object sender, EventArgs e)
{
try
{
int n = Convert.ToInt32(this.LblPageIndex.Text);
n++;
OnPageChange(sender, n);
}
catch
{
throw;
}
}
/// <summary>
/// 尾页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Last_Click(object sender, EventArgs e)
{
try
{
int n = Convert.ToInt32(this.LblPageCount.Text);
OnPageChange(sender, n);
}
catch
{
throw;
}
}
/// <summary>
/// 跳转
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Goto_Click(object sender, EventArgs e)
{
int n;
try
{
n = Convert.ToInt32(this.txtNewPageIndex.Text);
}
catch
{
n = Convert.ToInt32(this.LblPageIndex.Text);
}
int np = Convert.ToInt32(this.LblPageCount.Text.Trim());
if (n > np)
n = np;
if (n < 1)
n = 1;
OnPageChange(sender, n);
}
#endregion
}
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