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      ASP.NET 2.0 中AspNetPager.dll控件的分頁方法操作方法

       悟靜 2013-02-02
      大家好,我是Asp.net的忠實愛好者, 今天做項目時學(xué)會一種新控件[AspNetPager.dll]用法,很想把這方面的經(jīng)驗和大家分享一下,歡迎大家一起進(jìn)來討論討論!
      -------------------------------------------------------------------------
      前臺顯示界面代碼Default.aspx[注意,代碼運(yùn)行環(huán)境是VS.2005]

      <%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

      <%@ Register Assembly="AspNetPager" Namespace="Wuqi.Webdiyer" TagPrefix="webdiyer" %>

      <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www./TR/xhtml1/DTD/xhtml1-transitional.dtd">

      <html xmlns="http://www./1999/xhtml" >
      <head runat="server">
          <title>用AspNetPager.dll控件的分頁方法操作方法</title>
      </head>
      <body>
          <form id="form1" runat="server">
          <div>
          <table border=1>
             <asp:Repeater ID="Repeater1" runat="server">
              <ItemTemplate>
              <tr>
              <td><%#DataBinder.Eval(Container.DataItem,"job_id")%></td>
              <td><%#DataBinder.Eval(Container.DataItem,"job_desc")%></td>
              <td><%#DataBinder.Eval(Container.DataItem,"min_lvl")%></td>
              <td><%#DataBinder.Eval(Container.DataItem,"max_lvl")%></td>
              </tr>
              </ItemTemplate>
              </asp:Repeater>
          </table>
             <!--  <asp:DataGrid ID="DataGrid1" runat="server">
              </asp:DataGrid>-->
              <webdiyer:AspNetPager ID="AspNetPager1" runat="server" Width="733px" FirstPageText="第一頁" LastPageText="最后一頁" NextPageText="下一頁" PrevPageText="上一頁" Font-Names="Arial" BackColor="#F8B500" AlwaysShow="true"  ShowInputBox="Always" SubmitButtonText="跳轉(zhuǎn)" SubmitButtonStyle="botton" OnPageChanged="AspNetPager1_PageChanged" >
                    </webdiyer:AspNetPager>
          </div>
          </form>
      </body>
      </html>

       

      //Default.aspx頁面的代碼

          DBAccess db = new DBAccess();
          protected void Page_Load(object sender, EventArgs e)
          {
              if (!Page.IsPostBack)
              {
                 BindGrid();
              }
          }

          protected void AspNetPager1_PageChanged(object sender, EventArgs e)
          {
              BindGrid();
          }

          public void BindGrid()
          {
              this.AspNetPager1.RecordCount = Int32.Parse(db.GetAllCount().ToString());
              int pageIndex = this.AspNetPager1.CurrentPageIndex - 1;
              int pageSize = this.AspNetPager1.PageSize =5;
              Repeater1.DataSource = db.GetCurrentPage(pageIndex, pageSize);
              Repeater1.DataBind();
          }

       

      //前臺已經(jīng)OK了,就差后臺數(shù)據(jù)庫連接及分頁需要的方法,本項目數(shù)據(jù)庫示例為PUBS數(shù)據(jù)庫[安裝SQL SERVER就有的],分頁的表為jobs表

       

      using System.Data.SqlClient;

       

      public class DBAccess
      {
          private SqlConnection con;
          private string DBName = "pubs";

          //創(chuàng)建連接對象并打開
          public void Open()
          {
              if (con == null)
                  con = new SqlConnection("server=(local);uid=sa;pwd=sa;database="+DBName);
              if (con.State == ConnectionState.Closed)
                  con.Open();
          }

          //創(chuàng)建一個命令對象并返回該對象
          public SqlCommand CreateCommand(string sqlStr)
          {
              Open();
              SqlCommand cmd = new SqlCommand();
              cmd.CommandType = CommandType.Text;
              cmd.CommandText = sqlStr;
              cmd.Connection = con;
              return cmd;
          }

          //生成一個對象并返回該結(jié)果集第一行第一列
          public object GetScalar(string sqlStr)
          {
              SqlCommand cmd = CreateCommand(sqlStr);
              object obj = cmd.ExecuteScalar();
              //CommadnBehavior.CloseConnection是將于DataReader的數(shù)據(jù)庫鏈接關(guān)聯(lián)起來  
              //當(dāng)關(guān)閉DataReader對象時候也自動關(guān)閉鏈接
              return obj;
          }

           
          //執(zhí)行數(shù)據(jù)庫查詢并返回一個數(shù)據(jù)集 [當(dāng)前頁碼,每頁記錄條數(shù)]
          public DataSet GetCurrentPage(int pageIndex, int pageSize)
          {
              //設(shè)置導(dǎo)入的起始地址
              int firstPage = pageIndex * pageSize;
              string sqlStr = "select * from jobs order by job_id desc";
              SqlCommand cmd = CreateCommand(sqlStr);
              DataSet dataset = new DataSet();
              SqlDataAdapter dataAdapter = new SqlDataAdapter(cmd);
              dataAdapter.Fill(dataset,firstPage,pageSize,"jobs");
              cmd.Dispose();
              Close();
              dataAdapter.Dispose();
              return dataset;
          }

          //獲得查詢數(shù)據(jù)的總條數(shù)
          public object GetAllCount()
          {
              string sqlStr = "select count(*) from jobs";
              object obj = GetScalar(sqlStr);
              return obj;
          }
       
          //關(guān)閉數(shù)據(jù)庫
          public void Close()
          {
              if (con != null)
              {
                  con.Close();
              }
          }

          //釋放資源
          public void Dispose()
          {
              if (con != null)
              {
                  con.Dispose();
                  con = null;
              }
          }

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