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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using ClassDataBase;
namespace WLNet.YellowPage
{
/// <summary>
/// ShowYellowPage 的摘要说明。
/// </summary>
public class ShowYellowPage : System.Web.UI.Page
{
private ClassYPage YPage=new ClassYPage();
protected System.Web.UI.WebControls.Label lbTotalPage;
protected System.Web.UI.WebControls.Label lbTotalCount;
protected System.Web.UI.WebControls.Label lbCurrentPage;
protected System.Web.UI.WebControls.DropDownList ddlPage;
private string strConn=System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"].ToString();
protected Int32 CurrentPageNumber = 1;
protected System.Web.UI.WebControls.HyperLink lnkPrev;
protected System.Web.UI.WebControls.HyperLink lnkNext;
protected System.Web.UI.WebControls.DataList dlParent;
protected System.Web.UI.WebControls.HyperLink lnkFirst;
protected System.Web.UI.WebControls.HyperLink lnkLast;//初始化，设置当前页为1,随时都要使用
protected int PageSize=10;
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
{
BindData();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.ddlPage.SelectedIndexChanged += new System.EventHandler(this.ddlPage_SelectedIndexChanged);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void BindData()
{
SqlConnection Conn=new SqlConnection(strConn);
SqlCommand cmd=new SqlCommand("GetIndexPage",Conn);
cmd.CommandType=CommandType.StoredProcedure;
SqlDataAdapter da=new SqlDataAdapter();
da.SelectCommand=cmd;
DataSet ds=new DataSet();
da.Fill(ds,"IndexPage");
SqlCommand cmd1=new SqlCommand("GetSePage",Conn);
cmd1.CommandType=CommandType.StoredProcedure;
SqlDataAdapter da1=new SqlDataAdapter();
da1.SelectCommand=cmd1;
da1.Fill(ds,"SePage");
ds.Relations.Add("MyRelations",ds.Tables["IndexPage"].Columns["IndexID"],
ds.Tables["SePage"].Columns["IndexID"]);
PagedDataSource Pds = new PagedDataSource();
Pds.DataSource = ds.Tables["IndexPage"].DefaultView;
Pds.AllowPaging = true;
Pds.PageSize = 10;
int CurrentPageNumber;
int PageSize=Pds.PageSize;
//当前页面从Page查询参数获取
if (Request.QueryString["Page"] != null)
CurrentPageNumber=Convert.ToInt32(Request.QueryString["Page"]);
else
CurrentPageNumber=1;
int TotalRecords=ds.Tables[0].Rows.Count;
int TotalPages = TotalRecords / PageSize;//得到总页数（总记录数除以每页的记录数）
int ModePages=TotalRecords%PageSize;//得到取模的余数(总记录数取模每页的记录数)
if(ModePages>0)//如果取模数不等于0，则把总页数加1
{
TotalPages+=1;
}
if(ModePages==0)//如果取模数等于0,不做任何事（也可以不用判断）
{
}
if(TotalPages==0)
{
TotalPages=1;
}
lbTotalPage.Text = TotalPages.ToString();//显示页面上的总页数
lbTotalCount.Text=TotalRecords.ToString();//显示页面上的总记录数
Pds.CurrentPageIndex = CurrentPageNumber-1;
lbCurrentPage.Text=CurrentPageNumber.ToString();
if ( CurrentPageNumber == 1 )
{
lnkFirst.Enabled = false;
lnkPrev.Enabled=false;
if ( TotalPages > 1 )
{
lnkNext.Enabled = true;
lnkLast.Enabled=true;
}
else
{
lnkNext.Enabled = false;
lnkLast.Enabled=false;
}
}
else
{
lnkPrev.Enabled = true;
lnkFirst.Enabled=true;
if ( CurrentPageNumber == TotalPages )
{
lnkNext.Enabled = false;
lnkLast.Enabled=false;
}
else
{
lnkNext.Enabled = true;
lnkLast.Enabled=true;
}
}
if (!Pds.IsFirstPage)
{
lnkPrev.NavigateUrl=Request.CurrentExecutionFilePath + " ?Page=" + Convert.ToString(CurrentPageNumber-1);
lnkFirst.NavigateUrl=Request.CurrentExecutionFilePath + "?Page=" + 1;
}
if (!Pds.IsLastPage)
{
lnkNext.NavigateUrl=Request.CurrentExecutionFilePath+ "?Page=" + Convert.ToString(CurrentPageNumber+1);
lnkLast.NavigateUrl=Request.CurrentExecutionFilePath+ "?Page=" + Convert.ToString(TotalPages);
}
ddlPage.Items.Clear();//清楚跳转的页数（如果不清除，里面的记录将会循环增加）
int PCount=int.Parse(lbTotalPage.Text);//得到总页数，为了循环
for(int i=1;i<=PCount;i++)
{
ddlPage.Items.Add(i.ToString());
}
ddlPage.Items.FindByText(CurrentPageNumber.ToString()).Selected=true;//把当前页显示在列表框的第一个
//把PagedDataSource 对象赋给Repeater控件
dlParent.DataSource=Pds;
dlParent.DataBind();
}
private void ddlPage_SelectedIndexChanged(object sender, System.EventArgs e)
{
int PageSize=int.Parse(ddlPage.SelectedValue.ToString());
Server.Transfer("ShowYellowPage.aspx?Page="+PageSize);
BindData();
}
}
}
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