通用SQL存储过程分页以及asp.net后台调用的方法

时间:2020-12-15 人气:0

下面小编就为大家带来一篇通用SQL存储过程分页以及asp.net后台调用的方法。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

创建表格并添加300万数据

use Stored
CREATE TABLE UserInfo( --创建表
id int IDENTITY(1,1) PRIMARY KEY not null,--添加主键和标识列
UserName varchar(50) 
)
 
declare @i int --添加3百万数据，大概4分钟时间
set @i=1
while @i<3000000
begin
insert into UserInfo (UserName) values(@i)
set @i=@i+1
end

存储过程T-SQL

create PROCEDURE [dbo].[GetDataList]
(
 @TableName varchar(5000),    --表名
 @Fields varchar(5000) = '*',   --字段名(全部字段为*)
 @OrderField varchar(5000),    --排序字段(必须!支持多字段)
 @OrderType varchar(5000),    --排序类型
 @sqlWhere varchar(5000) = Null, --条件语句(不用加where)
 @pageSize int,          --每页多少条记录
 @pageIndex int = 1 ,       --指定当前为第几页
 @TotalPage int output,      --返回总页数 
 @totalRecord int output    --计算总记录数       --返回总记录数
 )
as
begin  Begin Tran --开始事务  
  
  Declare  @sql nvarchar(500); 
  if (@SqlWhere='' or @sqlWhere=NULL)
    set @sql = 'select @totalRecord = count(*) from ' + @TableName
  else
    set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' where ' + @sqlWhere  
      EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--计算总记录数 
        
  
  --计算总页数
  select @TotalPage=CEILING((@totalRecord+0.0)/@PageSize)  if (@SqlWhere='' or @sqlWhere=NULL)
    set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField +' ' + @Ordertype+' ) as rowId,' + @Fields + ' from ' + @TableName 
  else
    set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField +' ' + @Ordertype+' ) as rowId,' + @Fields + ' from ' + @TableName + ' where ' + @SqlWhere  

--处理页数超出范围情况
  if @PageIndex<=0 
    Set @pageIndex = 1
  
  if @pageIndex>@TotalPage
    Set @pageIndex = @TotalPage   --处理开始点和结束点
  Declare @StartRecord int
  Declare @EndRecord int
  
  set @StartRecord = (@pageIndex-1)*@PageSize + 1
  set @EndRecord = @StartRecord + @pageSize - 1  --继续合成sql语句
  set @Sql = @Sql + ') as ' + @TableName + ' where rowid between ' + Convert(varchar(50),@StartRecord) + ' and ' + Convert(varchar(50),@EndRecord) 
  --print @Sql 
  
   Exec(@Sql)
  ---------------------------------------------------
  If @@Error <> 0
   Begin
    RollBack Tran
    Return -1
   End
   Else
   Begin
    Commit Tran
    Return @totalRecord ---返回记录总数
   End  
end
--exec GetDataList 'Userinfo','*','id','desc','',10,1,3,3000000

前台页面Default2.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title></title>
</head>
<body>
  <form id="form1" runat="server">
  <div>
   <asp:GridView ID="GridView1" runat="server">
    </asp:GridView>
    <asp:Label ID="lbl_page" runat="server" Text="Label"></asp:Label>
  </div>
  </form>
</body>
</html>

后台CS代码Default2.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Text;


public partial class Default2 : System.Web.UI.Page
{  
  private int PageIndex = 0;//当前页码
  private int PageSize = 50;//每页几条记录
  private int TotalPage = 1;//总分页数
  private int TotalRecord = 0;//总记录
  private string OrderType = " desc";//排序方式 默认正序
  protected void Page_Load(object sender, EventArgs e)
  {
    if (!IsPostBack)
    {
      GetParams();
      DataSet ds = PageData("UserInfo", "*", "id", OrderType, "", PageSize, PageIndex, out TotalPage, out TotalRecord);
      GridView1.DataSource = ds;
      GridView1.DataBind();
      lbl_page.Text = GetDivPager("", ds);
    }
  }

  //数据库连接字符
  public static string StrConn()
  {
    //return string.Format("{0}","server=.;database=Stored;user=sa;password=123456");
    return ConfigurationSettings.AppSettings["ConnString"].ToString();
  }
  //Get方式获得下一页
  private void GetParams()
  {
    if (!String.IsNullOrEmpty(Request["page"]))
    {
      PageIndex = Convert.ToInt32(Request["Page"]);
    }
    else
    {
      PageIndex = 1;
    }
  }
  #region 获得分页字符
  public string GetDivPager(string queryString, DataSet ds)
  {
    StringBuilder sp = new StringBuilder();
    int TotalCount = TotalRecord;
    int rowCount = TotalPage;
    if (ds != null)
    {
      sp.AppendFormat(" <p>总记录：<span id=\"sum\">{0}</span>", TotalCount);
      sp.AppendFormat(" 页码：<em><b id=\"current\">{0}</b>/<span id=\"count\">{1}</span></em> ", PageIndex, rowCount);
      sp.AppendFormat(" 每页：<span id=\"eachPage\">{0}</span></p> ", PageSize);
      
      sp.AppendFormat(" <a href='{0}'>首页</a> ", "?page=1" + queryString);
      if (PageIndex > 1)
      {
        sp.AppendFormat(" <a href='{0}'>< 上一页 </a>", "?page=" + (PageIndex - 1) + queryString);
      }
      int temp = 0;
      int loopc = rowCount > 10 ? 10 : rowCount;
      for (int i = 0; i < loopc; i++)
      {
        temp = i + 1;
        if (PageIndex > 10) { temp = (PageIndex - 10) + i + 1; }
        sp.AppendFormat(" <a class=\"{0}\" href='{1}'>{2}</a>", PageIndex == temp ? "active" : "", "?page=" + temp + queryString, temp);
      }
      if (PageIndex != rowCount)
      {
        sp.AppendFormat(" <a href='{0}'>下一页 ></a>", "?page=" + (PageIndex + 1) + queryString);
      }
      sp.AppendFormat(" <a href='{0}'>尾页</a>", "?page=" + rowCount + queryString);
     
    }
    else
    {
      ds = null;
    }
    return sp.ToString();
  }
  #endregion
  #region 获取分页的数据
  /// <summary>
  /// 获取分页的数据
  /// </summary>
  /// <param name="TblName">数据表名</param>
  /// <param name="Fields">要读取的字段</param>
  /// <param name="OrderField">排序字段</param>
  /// <param name="OrderType">排序方式</param>
  /// <param name="SqlWhere">查询条件</param>
  /// <param name="PageSize">每页显示多少条数据</param>
  /// <param name="pageIndex">当前页码</param>
  /// <param name="TotalPage">返回值，共有多少页</param>
  /// <param name="TotalRecord">返回值，总有多少条记录</param>
  /// <returns></returns>
  public static DataSet PageData(string TblName, string Fields, string OrderField, string OrderType, string SqlWhere, int PageSize, int pageIndex, out int TotalPage, out int TotalRecord)
  {

    SqlConnection conn = new SqlConnection(StrConn());
    SqlCommand comm = new SqlCommand("GetDataList", conn);

    comm.Parameters.Add(new SqlParameter("@TableName", SqlDbType.NVarChar, 100)).Value = TblName;
    comm.Parameters.Add(new SqlParameter("@Fields", SqlDbType.NVarChar, 1000)).Value = Fields;
    comm.Parameters.Add(new SqlParameter("@OrderField", SqlDbType.NVarChar, 1000)).Value = OrderField;
    comm.Parameters.Add(new SqlParameter("@OrderType", SqlDbType.NVarChar, 1000)).Value = OrderType;
    comm.Parameters.Add(new SqlParameter("@sqlWhere", SqlDbType.NVarChar, 1000)).Value = SqlWhere;
    comm.Parameters.Add(new SqlParameter("@pageSize", SqlDbType.Int)).Value = PageSize;
    comm.Parameters.Add(new SqlParameter("@pageIndex", SqlDbType.Int)).Value = pageIndex;
    comm.Parameters.Add(new SqlParameter("@TotalPage", SqlDbType.Int));

    comm.Parameters["@TotalPage"].Direction = ParameterDirection.Output;//获得out出来的参数值

    comm.Parameters.Add(new SqlParameter("@totalRecord", SqlDbType.Int));
    comm.Parameters["@totalRecord"].Direction = ParameterDirection.Output;

    comm.CommandType = CommandType.StoredProcedure;

    SqlDataAdapter dataAdapter = new SqlDataAdapter(comm);
    DataSet ds = new DataSet();
    dataAdapter.Fill(ds);

    TotalPage = (int)comm.Parameters["@TotalPage"].Value;
    TotalRecord = (int)comm.Parameters["@totalRecord"].Value;

    conn.Close();
    conn.Dispose();
    comm.Dispose();
    
    return ds;
  }
  #endregion
}

以上这篇通用SQL存储过程分页以及asp.net后台调用的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。

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