----------使用存储过程编写一个分页查询-----------------------set nocount off --关闭SqlServer消息--set nocount on --开启SqlServer消息gocreate proc usp_getMyStudentsDataByPage--输入参数@pagesize int=7,--每页记录条数@pageindex int=1,--当前要查看第几页的记录--输出参数@recordcount int output,--总的记录的条数@pagecount int output --总的页数asbegin--1.编写查询语句，把用户要的数据查询出来selectt.fid,t.fname,t.fage,t.fgender,t.fmath,t.fclassid,t.fbirthdayfrom (select *,rn=row_number() over(order by fid asc) from MyStudent) as twhere t.rn between (@pageindex-1)*@pagesize+1 and @pagesize*@pageindex--2.计算总的记录条数set @recordcount=(select count(*) from MyStudent)--3.计算总页数set @pagecount=ceiling(@recordcount*1.0/@pagesize)end --调用前定义输出参数declare @rc int,@pc intexec usp_getMyStudentsDataByPage @pagesize=7,@pageindex=4, @recordcount=@rc output,@pagecount=@pc outputprint @rcprint @pc

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace _02通过Ado.Net调用存储过程{
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
private int pageIndex = 1;
//当前要查看的页码 private int pageSize = 7;
//每页显示的记录条数 private int pageCount;
//总页数 private int recordCount;
//总条数 //窗体加载的时候显示第一页的数据 private void Form1_Load(object sender, EventArgs e) {
LoadData();
}
private void LoadData() {
//根据pageIndex来加载数据 string constr = "Data Source=steve-pc;
Initial Catalog=itcast2014;
Integrated Security=True";
#region 1 //using (SqlConnection conn = new SqlConnection(constr)) //{
// //将sql语句变成存储过程名称 // string sql = "usp_getMyStudentsDataByPage";
// using (SqlCommand cmd = new SqlCommand(sql, conn)) // {
// //告诉SqlCommand对象，现在执行的存储过程不是SQL语句 // cmd.CommandType = CommandType.StoredProcedure;
// //增加参数(存储过程中有几个参数，这里就需要增加几个参数) // //@pagesize int=7,--每页记录条数 // //@pageindex int=1,--当前要查看第几页的记录 // //@recordcount int output,--总的记录的条数 // //@pagecount int output --总的页数 // SqlParameter[] pms = new SqlParameter[] {
// new SqlParameter("@pagesize",SqlDbType.Int){
Value =pageSize}
, // new SqlParameter("@pageindex",SqlDbType.Int){
Value =pageIndex}
, // new SqlParameter("@recordcount",SqlDbType.Int){
Direction=ParameterDirection.Output}
, // new SqlParameter("@pagecount",SqlDbType.Int){
Direction=ParameterDirection.Output}
// }
;
// cmd.Parameters.AddRange(pms);
// //打开连接 // conn.Open();
// //执行 //using(SqlDataReader reader=cmd.ExecuteReader()) //{
//reader.Read() //}
//pms[2].Value // }
//}
#endregion //DataAdapter方式 DataTable dt = new DataTable();
using (SqlDataAdapter adapter = new SqlDataAdapter("usp_getMyStudentsDataByPage", constr)) {
adapter.SelectCommand.CommandType = CommandType.StoredProcedure;
SqlParameter[] pms = new SqlParameter[] {
new SqlParameter("@pagesize",SqlDbType.Int){
Value =pageSize}
, new SqlParameter("@pageindex",SqlDbType.Int){
Value =pageIndex}
, new SqlParameter("@recordcount",SqlDbType.Int){
Direction=ParameterDirection.Output}
, new SqlParameter("@pagecount",SqlDbType.Int){
Direction=ParameterDirection.Output}
}
;
adapter.SelectCommand.Parameters.AddRange(pms);
adapter.Fill(dt);
//获取输出参数并且赋值给label label1.Text = "总条数：" + pms[2].Value.ToString();
label2.Text = "总页数：" + pms[3].Value.ToString();
label3.Text = "当前页：" + pageIndex;
//数据绑定 this.dataGridView1.DataSource = dt;
}
}
//下一页 private void button2_Click(object sender, EventArgs e) {
pageIndex++;
LoadData();
}
//上一页 private void button1_Click(object sender, EventArgs e) {
pageIndex--;
LoadData();
}
}
}