目前用到的两个分页存储过程代码

网络整理 - 08-24

第一个,取得数据总行数

复制代码代码如下:

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER PROCEDURE [sq8reyoung].[fenye_num]
(
@TableNames NVARCHAR(200),
@Filter nvarchar(200))
AS
IF @Filter = ''
SET @Filter = ' WHERE 1=1'
ELSE
SET @Filter = ' WHERE ' + @Filter
EXECUTE('select count(*) from '+@TableNames+' '+@Filter)

第二个取得分页数据

复制代码代码如下:

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER PROCEDURE [sq8reyoung].[fenye]
@TableNames VARCHAR(200), --表名，可以是多个表，但不能用别名
@PrimaryKey VARCHAR(100), --主键，可以为空，但@Order为空时该值不能为空
@Fields VARCHAR(200), --要取出的字段，可以是多个表的字段，可以为空，为空表示select *
@PageSize INT, --每页记录数
@CurrentPage INT, --当前页，0表示第1页
@Filter VARCHAR(200) = '', --条件，可以为空，不用填 where
@Group VARCHAR(200) = '', --分组依据，可以为空，不用填 group by
@Order VARCHAR(200) = '' --排序，可以为空，为空默认按主键升序排列，不用填 order by
AS
BEGIN
DECLARE @SortColumn VARCHAR(200)
DECLARE @Operator CHAR(2)
DECLARE @SortTable VARCHAR(200)
DECLARE @SortName VARCHAR(200)
IF @Fields = ''
SET @Fields = '*'
IF @Filter = ''
SET @Filter = 'WHERE 1=1'
ELSE
SET @Filter = 'WHERE ' + @Filter
IF @Group <>''
SET @Group = 'GROUP BY ' + @Group
IF @Order <> ''
BEGIN
DECLARE @pos1 INT, @pos2 INT
SET @Order = REPLACE(REPLACE(@Order, ' asc', ' ASC'), ' desc', ' DESC')
IF CHARINDEX(' DESC', @Order) > 0
IF CHARINDEX(' ASC', @Order) > 0
BEGIN
IF CHARINDEX(' DESC', @Order) < CHARINDEX(' ASC', @Order)
SET @Operator = '<='
ELSE
SET @Operator = '>='
END
ELSE
SET @Operator = '<='
ELSE
SET @Operator = '>='
SET @SortColumn = REPLACE(REPLACE(REPLACE(@Order, ' ASC', ''), ' DESC', ''), ' ', '')
SET @pos1 = CHARINDEX(',', @SortColumn)
IF @pos1 > 0
SET @SortColumn = SUBSTRING(@SortColumn, 1, @pos1-1)
SET @pos2 = CHARINDEX('.', @SortColumn)
IF @pos2 > 0
BEGIN
SET @SortTable = SUBSTRING(@SortColumn, 1, @pos2-1)
IF @pos1 > 0
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, @pos1-@pos2-1)
ELSE
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, LEN(@SortColumn)-@pos2)
END
ELSE
BEGIN
SET @SortTable = @TableNames
SET @SortName = @SortColumn
END
END
ELSE
BEGIN
SET @SortColumn = @PrimaryKey
SET @SortTable = @TableNames
SET @SortName = @SortColumn
SET @Order = @SortColumn
SET @Operator = '>='
END
DECLARE @type varchar(50)
DECLARE @prec int
SELECT @type=t.name, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
WHERE o.name = @SortTable AND c.name = @SortName
IF CHARINDEX('char', @type) > 0
SET @type = @type + '(' + CAST(@prec AS varchar) + ')'
DECLARE @TopRows INT
SET @TopRows = @PageSize * @CurrentPage + 1
PRINT @type
DECLARE @sql NVARCHAR(4000)
SET @Sql = 'DECLARE @SortColumnBegin ' + @type + '
SET ROWCOUNT ' + Cast(@TopRows as VARCHAR(10))+ ' SELECT @SortColumnBegin=' +
@SortColumn + ' FROM ' + @TableNames + ' ' + @Filter + ' ' + @Group + ' ORDER BY ' + @Order + '
SET ROWCOUNT ' + CAST(@PageSize AS VARCHAR(10)) + '
SELECT ' + @Fields + ' FROM ' + @TableNames + ' ' + @Filter + ' AND ' + @SortColumn + '' + @Operator + '@SortColumnBegin ' + ISNULL(@Group,'') + ' ORDER BY ' + @Order + ''
-- Print(@sql)
Exec(@sql)
END

以及实现此方法的数据操作类

复制代码代码如下:

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient ;
using System.Data;
using System.Configuration;
using Wuqi.Webdiyer;
using Models;
namespace DAL
{
public class DBHelper
{
public static readonly string CONN_STRING = ConfigurationManager.ConnectionStrings["RyMedicalConnectionString"].ConnectionString;
public static SqlDataReader GetReader(string safeSql)
{
SqlConnection conn = new SqlConnection(CONN_STRING);
SqlCommand cmd = new SqlCommand(safeSql, conn);
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
reader.Close();
return reader;
}
public static SqlDataReader GetReader(string sql, params SqlParameter[] values)
{
SqlConnection conn = new SqlConnection(CONN_STRING);
SqlCommand cmd = new SqlCommand(sql, conn);
conn.Open();
cmd.Parameters.AddRange(values);
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
reader.Close();
conn.Close();
return reader;
}
public static DataTable GetDataSet(string safeSql)
{
SqlConnection conn = new SqlConnection(CONN_STRING);
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(safeSql, conn);
conn.Open();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
conn.Close();
return ds.Tables[0];
}
public static DataTable GetDataSet(CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlConnection conn = new SqlConnection(CONN_STRING);
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(cmdText, conn);
conn.Open();
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
conn.Close();
return ds.Tables[0];
}
public static SqlDataReader ExecuteReader(CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection(CONN_STRING);
conn.Open();
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
rdr.Close();
conn.Close();
return rdr;
}
public static object ExecuteScalar(CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlCommand cmd = new SqlCommand();
using (SqlConnection conn = new SqlConnection(CONN_STRING))
{
conn.Open();
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
conn.Close();
return val;
}
}
public static object ExecuteScalar(SqlConnection conn, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, string cmdText, SqlParameter[] cmdParms)
{
if (conn.State != ConnectionState.Open)
conn.Open();
cmd.Connection = conn;
cmd.CommandText = cmdText;
if (trans != null)
cmd.Transaction = trans;
cmd.CommandType = cmdType;
if (cmdParms != null)
{
foreach (SqlParameter parm in cmdParms)
cmd.Parameters.Add(parm);
}
}
public static void ExecuteNonQuery(string sql)
{
SqlConnection conn = new SqlConnection(CONN_STRING);
SqlCommand cmd = new SqlCommand(sql,conn);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}
/// <summary>
/// 传入SQL语句,返回int
/// </summary>
/// <param></param>
/// <returns></returns>
public static int ExcuteCommand(string sql)
{
SqlConnection conn = new SqlConnection(CONN_STRING);
SqlCommand cmd = new SqlCommand(sql, conn);
conn.Open();
int result = cmd.ExecuteNonQuery();
conn.Close();
return result;
}
/// <summary>
///
/// </summary>
/// <param>需要分页的表明</param>
/// <param>主键名</param>
/// <param>需要取出的字段,留空则为*</param>
/// <param>每页的记录数</param>
/// <param>当前页</param>
/// <param>条件，可以为空，不用填 where</param>
/// <param>分组依据，可以为空，不用填 group by</param>
/// <param>排序，可以为空，为空默认按主键升序排列，不用填 order by</param>
/// <returns></returns>
public static DataTable Pagedlist(string Name, string pk, string fields, int pagesize, int CurrentPage, string Filter, string Group, string order)
{
CurrentPage = CurrentPage - 1;
DataTable dt = GetDataSet(CommandType.StoredProcedure, "fenye",
new SqlParameter("@TableNames", Name),
new SqlParameter("@PrimaryKey", pk),
new SqlParameter("@Fields", fields),
new SqlParameter("@PageSize", pagesize),
new SqlParameter("@CurrentPage", CurrentPage),
new SqlParameter("@Filter", Filter),
new SqlParameter("@Group", Group),
new SqlParameter("@Order", order)
);
return dt;
}
public static int fenye_num(string Name, string Filter)
{
return (int)ExecuteScalar(CommandType.StoredProcedure, "fenye_num",
new SqlParameter("@TableNames", Name),
new SqlParameter("@Filter", Filter));
}
/// <summary>
///
/// </summary>
/// <param>需要分页的表明</param>
/// <param>主键名</param>
/// <param>需要取出的字段,留空则为*</param>
/// <param>每页的记录数</param>
/// <param>当前页</param>
/// <param>条件，可以为空，不用填 where</param>
/// <param>分组依据，可以为空，不用填 group by</param>
/// <param>排序，可以为空，为空默认按主键升序排列，不用填 order by</param>
/// <param>传递aspnetpager控件</param>
/// <returns></returns>
public static DataTable Paged(string Name, string pk, string fields, int pagesize, int CurrentPage, string Filter, string Group, string order, AspNetPager objanp)
{
CurrentPage = CurrentPage - 1;
DataTable dt = GetDataSet(CommandType.StoredProcedure, "fenye",
new SqlParameter("@TableNames", Name),
new SqlParameter("@PrimaryKey", pk),
new SqlParameter("@Fields", fields),
new SqlParameter("@PageSize", pagesize),
new SqlParameter("@CurrentPage", CurrentPage),
new SqlParameter("@Filter", Filter),
new SqlParameter("@Group", Group),
new SqlParameter("@Order", order)
);
objanp.RecordCount = fenye_num(Name, Filter);
return dt;
}
}
}

以及页面调用方式

复制代码代码如下:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Insus.NET;
using DAL;
using System.Data.SqlClient;
public partial class news_newlist : System.Web.UI.Page
{
int nid;
int totalOrders;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Request.QueryString["typeid"] != null)
{
nid = Convert.ToInt16(Request.QueryString["typeid"].ToString());
binddata(1);
}
else
{
Response.Redirect("~/default.aspx");
}
}
}
private void binddata(int page)
{
DataTable dt = DBHelper.Paged("M_NewInfoAll", "New_Id", "", AspNetPager1.PageSize, page, "New_TypeId=" + nid.ToString() + "", "", "New_PubDate desc", AspNetPager1);
this.Repeater1.DataSource = dt;
this.Repeater1.DataBind();
DataRow dr = dt.Rows[0];
this.Label1.Text = dr["New_TypeName"].ToString();
//this.Literal1.Text = dr["new_typeName"].ToString();
Page.Title = Label1.Text.Trim() + " - 新农合医药网";
}
protected void AspNetPager1_PageChanged(object sender, EventArgs e)
{
if (Request.QueryString["page"] != null)
{
binddata(Convert.ToInt32(Request.QueryString["page"].ToString()));
}
}
}

如此分页即可实现(下图),在任何项目中只需要COPY2个存储过程一个数据操作类,或者喜欢将数据类做成DLL也可以,在页面调用时传入参数只需一行代码即可.