复制代码 代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="paging.aspx.cs" Inherits="五二一练习.paging" %>
首先在数据库创建存储过程
复制代码 代码如下:
create proc usp_role_GetDateByPageIndex
@pageSize int,
@pageIndex int
as
begin
select * from
(
select *,ROW_NUMBER() over(order by role_id) as rownumber from role) as tbl
where tbl.rownumber between (@pageSize*(@pageIndex-1)+1) and @pageIndex*@pageSize
end
exec usp_role_GetDateByPageIndex 5,3
在项目中添加BLL,DAL,DataAccess,MODEL层
在DAL中写一个方法：
复制代码 代码如下:
//自己写的方法，分页获取数据列表
public DataTable GetListDataTable(int PageSize, int PageIndex)
{
SqlParameter[] parameters = {
new SqlParameter("@PageSize", SqlDbType.Int),
new SqlParameter("@PageIndex", SqlDbType.Int)
};
parameters[0].Value = PageSize;
parameters[1].Value = PageIndex;
return DbHelperSQL.RunProcedureDataTable("usp_role_GetDateByPageIndex", parameters);
}
在BLL中调用GetListDataTable：
public DataTable GetListDataTable(int pagesize, int pageindex)
{
return dal.GetListDataTable(pagesize, pageindex);
}
在DbHelper中添加RunProcedureDataTable方法：
public static DataTable RunProcedureDataTable(string stroreProcName, IDataParameter[] parameters)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataTable dt = new DataTable();
connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand(connection, stroreProcName, parameters);
sqlDA.Fill(dt);
connection.Close();
return dt;
}
}
然后在后台调用即可：
复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
namespace 练习
{
public partial class paging : System.Web.UI.Page
{
int pagesize = 10;
int pageindex = 1;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ViewState["pageindex"] = 1;
LadaData();
GetListPageindex();
}
}
private void GetListPageindex()
{
BLL.T_News1 bnews = new BLL.T_News1();
int totalcount = bnews.GetRecordCount("");
if (totalcount % pagesize == 0)
{
ViewState["lastpageindex"] = totalcount / pagesize;
}
else
{
ViewState["lastpageindex"] = totalcount / pagesize + 1;
}
}
private void LadaData()
{
BLL.T_News1 bnews = new BLL.T_News1();
DataTable dt = bnews.GetListDataTable(pagesize, Convert.ToInt32(ViewState["pageindex"]));
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
//第一页
protected void btnFirst_Click(object sender, EventArgs e)
{
ViewState["pageindex"] = 1;
LadaData();
}
//上一页
protected void btnPre_Click(object sender, EventArgs e)
{
int pageindex = Convert.ToInt32(ViewState["pageindex"]);
if (pagesize>1)
{
pageindex--;
ViewState["pageindex"] = pageindex;
LadaData();
}
}
//下一页
protected void btnNext_Click(object sender, EventArgs e)
{
int pageindex = Convert.ToInt32(ViewState["pageindex"]);
if (pageindex
pageindex++;
ViewState["pageindex"] = pageindex;
LadaData();
}
}
//最后一页
protected void btnLast_Click(object sender, EventArgs e)
{
ViewState["pageindex"] = ViewState["lastpageindex"];
LadaData();
}
//跳转页面
protected void btnSkip_Click(object sender, EventArgs e)
{
int result;
if (int.TryParse(txtPagination.Text, out result) == true)
{
ViewState["pageindex"] = txtPagination.Text.Trim();
LadaData();
}
else
{
txtPagination.Text = "请输入合法的数字";
}
}
}
}
