通用分页存储过程的使用
看着同事写的通用分页存储过程觉得还不错，分享给大家
1、存储过程
USE
[test]
GO
/****** Object: StoredProcedure [dbo].[ads_GetAll] Script Date: 07/04/2013 16:00:48 ******/
SET
ANSI_NULLS
ON
GO
SET
QUOTED_IDENTIFIER
ON
GO
ALTER
PROCEDURE
[dbo]
.
[ads_GetAll]
--
通用分页存储过程
@TableName
varchar
(
50
),
--
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
)
@sqlWhere
varchar
(
5000
),
--
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
@COUNT
int
output
--
返回总页数
as
begin
Begin
Tran
--
开始事务
Declare
@sql
nvarchar
(
4000
);
Declare
@totalRecord
int
;
--
计算总记录数
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
@COUNT
=
CEILING
((
@totalRecord
+
0.0
)/
@PageSize
)
if
(
@SqlWhere
=
''
or
@sqlWhere
=NULL)
set
@sql
=
'Select * FROM (select ROW_NUMBER() Over(order by '
+
@OrderField
+
') as rowId,'
+
@Fields
+
' from '
+
@TableName
else
set
@sql
=
'Select * FROM (select ROW_NUMBER() Over(order by '
+
@OrderField
+
') 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
>
@COUNT
Set
@pageIndex
=
@COUNT
--
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
)
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
2、数据处理层中：
/// <summary>
/// 获取分析师信息并分页
/// </summary>
/// <param name="pageSize">每页页数</param>
/// <param name="count">总个数</param>
/// <returns></returns>
public
List<Ads_Analyst> ads_Analyst_GetAll(
int
pageIndex,
int
pageSize,
string
where,
out
int
count)
{
List<Ads_Analyst> list =
new
List<Ads_Analyst>();
IDataReader reader =
null
;
IDataParameter[] parameters =
{
Helper.GetParameter(
"@COUNT"
, DbType.Int32, ParameterDirection.Output),
Helper.GetParameter(
"@ReturnValue"
,DbType.Int32,ParameterDirection.ReturnValue),
Helper.GetParameter(
"@PAGESIZE"
, DbType.Int16,pageSize),
Helper.GetParameter(
"@PAGEINDEX"
, DbType.Int16,pageIndex),
Helper.GetParameter(
"@sqlWhere"
, DbType.String,where),
Helper.GetParameter(
"@TableName"
, DbType.String,
"ads_Analyst"
),
Helper.GetParameter(
"@Fields"
, DbType.String,
"[ID],[AnalystName],[Picture],[JobTitle],[Trade],[Introduction],[Status],[AddTime],[EditTime]"
),
Helper.GetParameter(
"@OrderField"
, DbType.String,
"AddTime desc"
),
};
try
{
reader = Helper.ExecuteReader
(
ConnectToADS,
CommandType.StoredProcedure,
"ads_GetAll"
,
parameters
);
while
(reader.Read())
{
Ads_Analyst m =
new
Ads_Analyst();
m.ID = Field.GetInt32(reader,
"ID"
);
m.AnalystName = Field.GetString(reader,
"AnalystName"
);
m.Picture = Field.GetString(reader,
"Picture"
);
m.JobTitle = Field.GetString(reader,
"JobTitle"
);
m.Trade = Field.GetString(reader,
"Trade"
);
m.Introduction = Field.GetString(reader,
"Introduction"
);
m.AddTime = Field.GetDateTime(reader,
"AddTime"
);
m.EditTime = Field.GetDateTime(reader,
"EditTime"
);
m.Status = Field.GetInt32(reader,
"Status"
);
list.Add(m);
}
reader.Close();
count = (
int
)parameters[1].Value;
return
list;
}
catch
(System.Exception ex)
{
Logger.Error(
"获取分析师信息并分页出错"
, ex);
throw
new
DataAccessException(
"获取分析师信息并分页出错"
, ex);
}
finally
{
if
(reader !=
null
)
{
reader.Close();
}
}
}