using System;

using System.Collections;

using System.Configuration;

using System.ComponentModel;

using System.Data;

using System.Data.SqlClient;

using System.Drawing;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HTMLControls;

namespace cj168.Web

{

///

public class search : System.Web.UI.Page

{

protected System.Web.UI.WebControls.DataList datalistSearchResult;

protected System.Web.UI.WebControls.Label lblTxtSearch;

protected System.Web.UI.WebControls.Label lblRecordCount;

protected System.Web.UI.WebControls.Label lblCurrentPage;

protected System.Web.UI.WebControls.Label lblPageCount;

protected System.Web.UI.WebControls.Label lblPageRange;

protected System.Web.UI.WebControls.LinkButton lbnPrevPage;

protected System.Web.UI.WebControls.LinkButton lbnNextPage;

String txtSearch;

int PageSize,RecordCount,PageCount,CurrentPage;

public search()

{

Page.Init += new System.EventHandler(Page_Init);

}

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

{

// Put user code to initialize the page here

txtSearch = Request.Params["txtSearch"];

if (txtSearch != null )

{txtSearch = txtSearch.Replace("'","");

lblTxtSearch.Text = txtSearch;

//设定PageSize

PageSize = 10;

//计算总共有多少记录

RecordCount = CalculateRecord();

lblRecordCount.Text = RecordCount.ToString();

if(!Page.IsPostBack)

{

DoSearch();

CurrentPage = 0;

ViewState["PageIndex"] = 0;

//计算总共有多少页

PageCount = RecordCount/PageSize;

if (RecordCount%PageSize > 0)

PageCount = PageCount + 1;

lblPageCount.Text = PageCount.ToString();

ViewState["PageCount"] = PageCount;

}

}

}

//计算总共有多少条记录

public int CalculateRecord()

{

cj168.DataAccess.MagsDB DoSearch = new cj168.DataAccess.MagsDB();

return DoSearch.GetSearchResultCount(txtSearch);

}

void DoSearch()

{

int StartIndex;

int fromItem, toItem;

//设定导入的起终地址

StartIndex = CurrentPage*PageSize;

cj168.DataAccess.MagsDB DoSearch = new cj168.DataAccess.MagsDB();

datalistSearchResult.DataSource = DoSearch.GetSearchResult(txtSearch,StartIndex, PageSize);

datalistSearchResult.DataBind();

lbnNextPage.Enabled = true;

lbnPrevPage.Enabled = true;

if(CurrentPage==(PageCount-1)) lbnNextPage.Enabled = false;

if(CurrentPage==0) lbnPrevPage.Enabled = false;

lblCurrentPage.Text = (CurrentPage+1).ToString();

fromItem = StartIndex+1;

toItem = StartIndex+PageSize;

if (RecordCount < toItem)

toItem = RecordCount;

lblPageRange.Text = fromItem + "-" + toItem;

}

public void Page_OnClick(Object sender,CommandEventArgs e)

{

CurrentPage = (int)ViewState["PageIndex"];

PageCount = (int)ViewState["PageCount"];

string cmd = e.CommandName;

//判断cmd，以判定翻页方向

switch(cmd)

{

case "next":

if(CurrentPage<(PageCount-1)) CurrentPage++;

break;

case "prev":

if(CurrentPage>0) CurrentPage--;

break;

}

ViewState["PageIndex"] = CurrentPage;

DoSearch();

}

private void Page_Init(object sender, EventArgs e)

{

//

// CODEGEN: This call is required by the ASP.NET Web Form Designer.

//

InitializeComponent();

}

#region Web Form Designer generated code

///

private void InitializeComponent()

{

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

}

#endregion

}

}