代码1 存储过程源码
IF exists (SELECT * FROM dbo.sysobjects WHERE id = object_id(N‘[dbo].[proc_DataPagingList]‘) and OBJECTPROPERTY(id, N‘IsProcedure‘) = 1)
drop procedure [dbo].[proc_DataPagingList]
GO
CREATE PROCEDURE [dbo].[proc_DataPagingList]
(
@tableName NVARCHAR(200), ----要显示的表或多个表的连接
@fieldNames NVARCHAR(200)=‘*‘, ----要显示的字段列表
@pageSize INT = 10, ----每页显示的记录个数
@page INT = 10, ----要显示那一页的记录
@pageCount INT = 1 output, ----查询结果分页后的总页数
@counts INT = 1 output, ----查询到的总记录数
@fieldSort NVARCHAR(200)= null,----排序字段列表或条件
@sort BIT = 1, ----排序方法，0为升序，1为降序--程序传参如：‘ SortA Asc,SortB Desc,SortC ‘)
@condition NVARCHAR(200)= null,----查询条件,不需WHERE
@keyID NVARCHAR(100), ----主表的主键
@distinct BIT = 0 ----是否添加查询字段的 DISTINCT 默认0不添加/1添加
)
AS
SET NOCOUNT ON
Declare @SELECT NVARCHAR(1000) ----存放动态生成的SQL语句
Declare @strCounts NVARCHAR(1000) ----存放取得查询结果总数的查询语句
Declare @strID NVARCHAR(1000) ----存放取得查询开头或结尾ID的查询语句
Declare @sortTypeA NVARCHAR(10) ----数据排序规则A
Declare @SortTypeB NVARCHAR(10) ----数据排序规则B
Declare @distSelect NVARCHAR(50) ----对含有DISTINCT的查询进行SQL构造
Declare @distCounts NVARCHAR(50) ----对含有DISTINCT的总数查询进行SQL构造
DECLARE @SortfieldA NVARCHAR(50) ----对含有是否还有排序字段时的排序方式组合A
DECLARE @SortfieldB NVARCHAR(50) ----对含有是否还有排序字段时的排序方式组合B
IF @distinct = 0
BEGIN
SET @distSelect = ‘SELECT ‘
SET @distCounts = ‘ COUNT(*)‘
END
ELSE
BEGIN
SET @distSelect = ‘SELECT distinct ‘
SET @distCounts = ‘ COUNT(DISTINCT ‘+@keyID+‘)‘
END
IF @sort=0
BEGIN
SET @SortTypeB=‘ ASC ‘
SET @sortTypeA=‘ DESC ‘
END
ELSE
BEGIN
SET @SortTypeB=‘ DESC ‘
SET @sortTypeA=‘ ASC ‘
END
IF @fieldSort IS NOT NULL AND @fieldSort<>‘‘ --排序字段不为空时
BEGIN
SET @SortfieldB=‘ order by ‘+ @fieldSort +‘ ‘+ @SortTypeB
SET @SortfieldA=‘ order by ‘+ @fieldSort +‘ ‘+ @SortTypeA
END
ELSE
BEGIN
SET @SortfieldB=‘‘
SET @SortfieldA=‘‘
END
--------生成查询语句--------
--此处@strCounts为取得查询结果数量的语句
IF @condition is null or @condition=‘‘ --没有设置显示条件
BEGIN
SET @SELECT = @fieldNames + ‘ FROM ‘ + @tableName
SET @strCounts = @distSelect+‘ @counts=‘+@distCounts+‘ FROM ‘+@tableName
SET @strID = ‘ FROM ‘ + @tableName
END
ELSE
BEGIN
SET @SELECT = + @fieldNames + ‘FROM ‘ + @tableName + ‘ WHERE ‘ + @condition
SET @strCounts = @distSelect+‘ @counts=‘+@distCounts+‘ FROM ‘+@tableName + ‘ WHERE ‘ + @condition
SET @strID = ‘ FROM ‘ + @tableName + ‘ WHERE ‘ + @condition
END
----取得查询结果总数量-----
exec sp_executesql @strCounts,N‘@counts INT out ‘,@counts out
DECLARE @tmpCounts INT
IF @counts = 0
SET @tmpCounts = 1
ELSE
SET @tmpCounts = @counts
--取得分页总数
SET @pageCount=(@tmpCounts+@pageSize-1)/@pageSize
--/**当前页大于总页数 取最后一页**/
IF @page>@pageCount
SET @page=@pageCount
--/*-----数据分页2分处理-------*/
DECLARE @pageIndex INT --总数/页大小
DECLARE @lastcount INT --总数%页大小
SET @pageIndex = @tmpCounts/@pageSize
SET @lastcount = @tmpCounts%@pageSize
IF @lastcount > 0
SET @pageIndex = @pageIndex + 1
ELSE
SET @lastcount = @pageSize
--显示分页
IF @condition is null or @condition=‘‘ --没有设置显示条件
BEGIN
IF @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
BEGIN
SET @strCounts=@distSelect+‘ TOP ‘+ CAST(@pageSize as VARCHAR(4))+‘ ‘+ @fieldNames+‘ FROM ‘+@tableName + ‘ WHERE ‘+@keyID+‘ not in(‘+ @distSelect+‘ TOP ‘+ CAST(@pageSize*(@page-1) as Varchar(20)) +‘ ‘+ @keyID +‘ FROM ‘+@tableName + @SortfieldB +‘)‘ + @SortfieldB
END
ELSE
BEGIN
SET @page = @pageIndex-@page+1 --后半部分数据处理
IF @page <= 1 --最后一页数据显示
SET @strCounts=@distSelect+‘ * FROM (‘+@distSelect+‘ TOP ‘+ CAST(@lastcount as VARCHAR(4))+‘ ‘+ @fieldNames+‘ FROM ‘+@tableName + @SortfieldA+‘) AS TempTB ‘+@SortfieldB
ELSE
SET @strCounts=@distSelect+‘ * FROM (‘+@distSelect+‘ TOP ‘+ CAST(@pageSize as VARCHAR(4))+‘ ‘+ @fieldNames+‘ FROM ‘+@tableName + ‘ WHERE ‘+@keyID+‘ not in(‘+ @distSelect+‘ TOP ‘+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +‘ ‘+ @keyID +‘ FROM ‘+@tableName + @SortfieldA+‘)‘ + @SortfieldA+‘) AS TempTB ‘+@SortfieldB
END
END
ELSE --有查询条件
BEGIN
IF @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
BEGIN
SET @strCounts=@distSelect+‘ TOP ‘+ CAST(@pageSize as VARCHAR(4))+‘ ‘+ @fieldNames +‘ FROM ‘+@tableName + ‘ WHERE ‘+@keyID+‘ not in(‘+ @distSelect+‘ TOP ‘+ CAST(@pageSize*(@page-1) as Varchar(20)) +‘ ‘+ @keyID +‘ FROM ‘+@tableName + ‘ Where ‘ + @condition + @SortfieldB+‘)‘+‘ AND ‘ + @condition + @SortfieldB
END
ELSE
BEGIN
SET @page = @pageIndex-@page+1 --后半部分数据处理
IF @page <= 1 --最后一页数据显示
SET @strCounts=@distSelect+‘ * FROM (‘+@distSelect+‘ TOP ‘+ CAST(@lastcount as VARCHAR(4))+‘ ‘+ @fieldNames+‘ FROM ‘+@tableName + ‘ WHERE ‘+ @condition +@SortfieldA+‘) AS TempTB ‘+@SortfieldB
ELSE
SET @strCounts=@distSelect+‘ * FROM (‘+@distSelect+‘ TOP ‘+ CAST(@pageSize as VARCHAR(4))+‘ ‘+ @fieldNames+‘ FROM ‘+@tableName + ‘ WHERE ‘+@keyID+‘ not in(‘+ @distSelect+‘ TOP ‘+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +‘ ‘ + @keyID +‘ FROM ‘+@tableName +‘ WHERE ‘+ @condition +@SortfieldA+‘)‘ +‘ AND ‘+ @condition +@SortfieldA+‘) AS TempTB ‘ + @SortfieldB
END
END
------返回查询结果-----
exec sp_executesql @strCounts
SET NOCOUNT OFF
代码2 C#后台调用代码
//调用以下必须先创建一个DataPageList 对象，用引用型传递这个对象来访问以下GetDataPageList函数，并返回DataPageList 对象。这个返回的对象中包括很多属性，直接引用需要的属性即可，见属性类介绍。
private static readonly string mConnectionString = ConfigurationManager.ConnectionStrings["FleaMarketConnString"].ConnectionString;
/// <summary>
///
/// </summary>
/// <param name="dpl"></param>
/// <returns></returns>
public DataPageList GetDataPageList(ref DataPageList dpl)
{
SqlConnection conn = new SqlConnection(mConnectionString);
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = new SqlCommand();
da.SelectCommand.Connection = conn;
da.SelectCommand.CommandText = "proc_DataPagingList";
da.SelectCommand.CommandType = CommandType.StoredProcedure;
da.SelectCommand.Parameters.Add("@tableName", SqlDbType.NVarChar, 200).Value = dpl.TableName;
da.SelectCommand.Parameters.Add("@fieldNames", SqlDbType.NVarChar, 200).Value = dpl.FieldNames;
da.SelectCommand.Parameters.Add("@pageSize", SqlDbType.Int).Value = dpl.PageSize;
da.SelectCommand.Parameters.Add("@page", SqlDbType.Int).Value = dpl.Page;
da.SelectCommand.Parameters.Add("@pageCount", SqlDbType.Int).Direction = ParameterDirection.Output;
da.SelectCommand.Parameters.Add("@counts", SqlDbType.Int).Direction = ParameterDirection.Output;
da.SelectCommand.Parameters.Add("@fieldSort", SqlDbType.NVarChar, 100).Value = dpl.FieldSort;
da.SelectCommand.Parameters.Add("@sort", SqlDbType.Bit).Value = dpl.Sort;
da.SelectCommand.Parameters.Add("@condition", SqlDbType.NVarChar, 200).Value = dpl.Condition;
da.SelectCommand.Parameters.Add("@keyID", SqlDbType.NVarChar, 100).Value = dpl.KeyID;
da.SelectCommand.Parameters.Add("@Distinct", SqlDbType.Bit).Value = dpl.Distinct;
DataSet ds = new DataSet();
da.Fill(ds);
//PageListReturnValue plr = new PageListReturnValue();
dpl.GetDataSet = ds;
dpl.Counts = int.Parse(da.SelectCommand.Parameters["@counts"].Value.ToString());
dpl.PageCount = int.Parse(da.SelectCommand.Parameters["@pageCount"].Value.ToString());
//object[] obj = new object[3];
//obj[0] = ds;
//obj[1] = da.SelectCommand.Parameters["@counts"].Value;
//obj[2] = da.SelectCommand.Parameters["@pageCount"].Value;
return dpl;
}
代码3 属性实体代码
/// <summary>
/// 高效分页输出输入参数属性
/// </summary>
public class DataPageList
{
private int _page=1;//第多少页
private int _pageSize = 10;//请求页面大小
private string _jsonRowsName = "rows";
private string _tableName = "";
private string _fieldNames = "*";//默认为所有数据
private string _fieldSort = "";
private byte _sort = 1;
private string _condition = "";
private string _keyID = "";
private byte _distinct = 0;
private int _counts = 10;//总页数
private int _pageCount = 10;//总的多少页面
private DataSet _dataset = null;
/// <summary>
/// 总记录数
/// </summary>
public int Counts
{
get { return _counts; }
set { _counts = value; }
}
/// <summary>
/// 总分页数
/// </summary>
public int PageCount
{
get { return _pageCount; }
set { _pageCount = value; }
}
/// <summary>
/// 数据集
/// </summary>
public DataSet GetDataSet
{
get { return _dataset; }
set { _dataset = value; }
}
/// <summary>
/// 第几页
/// </summary>
public int Page
{
get { return _page; }
set { _page = value; }
}
/// <summary>
/// 每页显示的记录数
/// </summary>
public int PageSize
{
get { return _pageSize; }
set { _pageSize = value; }
}
/// <summary>
/// Flexigrid Json行名，固定为rows
/// </summary>
public string JsonRowsName
{
get { return _jsonRowsName; }
//set { _jsonRowsName = value; }
}
/// <summary>
/// 表名或视图名称
/// </summary>
public string TableName
{
get { return _tableName; }
set { _tableName = value; }
}
/// <summary>
/// 字段名，默认为*
/// </summary>
public string FieldNames
{
get { return _fieldNames; }
set { _fieldNames = value; }
}
/// <summary>
/// 排序字段
/// </summary>
public string FieldSort
{
get { return _fieldSort; }
set { _fieldSort = value; }
}
/// <summary>
/// 排序方式，默认为1，表示降序；0表示升序
/// </summary>
public byte Sort
{
get { return _sort; }
set { _sort = value; }
}
/// <summary>
/// 查询条件，不加where
/// </summary>
public string Condition
{
get { return _condition; }
set { _condition = value; }
}
/// <summary>
/// 表主键
/// </summary>
public string KeyID
{
get { return _keyID; }
set { _keyID = value; }
}
/// <summary>
/// 是否消除记录重复，同时包括计数,默认0表示不添加
/// </summary>
public byte Distinct
{
get { return _distinct; }
set { _distinct = value; }
}
}