分页存储过程

这个是我在项目中用到的存储过程分页，现在摘录下来

在SQL数据库编写存储过程语句

1 USE [ExTzglDev]
2 GO
3
4 /* ***** Object: StoredProcedure [dbo].[UP_GetRecordByPage] Script Date: 07/11/2011 11:16:57 ***** */
5 SET ANSI_NULLS ON
6 GO
7
8 SET QUOTED_IDENTIFIER ON
9 GO
10
11
12
13 Create PROCEDURE [dbo].[UP_GetRecordByPage]
14 @TableName varchar( 255 ), -- 表名
15 @PageSize int = 10 , -- 页尺寸
16 @PageIndex int = 1 , -- 页码
17 @OrderColumn varchar( 255 ), -- 主排序字段名()
18 @OrderType varchar( 4 ) = ' Asc ' , -- 设置排序类型, 0 值表示升序
19 @WhereStr varchar( 1500 ) = '' , -- 查询条件 (注意: 不要加 where )
20 @TotalCount int output, -- 返回记录总数
21 @OrderBy varchar( 255 ) = '' -- 副排序字段名
22 AS
23 Declare @strSQL varchar( 4000 ) -- 主语句
24 Declare @Sort nvarchar( 500 )
25
26 if @OrderColumn <> ''
27 Begin
28 if UPPER( @OrderType) = ' ASC '
29 set @Sort = @OrderColumn + ' Asc '
30 else
31 set @Sort = @OrderColumn + ' Desc '
32 End
33 if @OrderBy <> ''
34 set @Sort = @Sort + ' , ' + @OrderBy
35
36 Set @strSQL = ' SELECT * FROM (SELECT *,ROW_NUMBER() OVER(Order By ' + @Sort + ' ) AS rownum
37 FROM '
38 if @WhereStr = ''
39 set @strSQL = @strSQL + ' ' + @TableName + ' ) AS D '
40 else
41 set @strSQL = @strSQL + ' (Select * From ' + @TableName + ' WHERE ( ' + @WhereStr + ' )) AS B) AS D '
42
43 set @strSQL = @strSQL + ' WHERE (rownum BETWEEN ' + str((@PageIndex - 1 ) * @PageSize + 1 ) + ' AND ' + str(@PageIndex * @PageSize) + ' ) ' -- Order By ' + @Sort
44
45 Declare @strCount nvarchar( 2000 )
46 if @WhereStr <> ''
47 set @strCount = N ' select @TotalCount=Count(*) from [ ' + @TableName + ' ] Where ( ' + @WhereStr + ' ) '
48 else
49 set @strCount = N ' select @TotalCount=Count(*) from [ ' + @TableName + ' ] '
50
51 execute sp_executesql @strCount,N ' @TotalCount int output ' ,@TotalCount output
52
53 exec (@strSQL)
54 return @TotalCount
55
56
57
58
59 GO

在数据操作层DAL的代码：

1 /// <summary>
2 /// 分页获取数据列表
3 /// </summary>
4 /// <param name="fieldlist"> 查找的字段 </param>
5 /// <param name="tablename"> 表名 </param>
6 /// <param name="where"> 查询条件 </param>
7 /// <param name="orderfield"> 排序字段 </param>
8 /// <param name="key"> 主键 </param>
9 /// <param name="pageindex"> 页索引 </param>
10 /// <param name="pagesize"> 每页记录数 </param>
11 /// <param name="ordertype"> 排序方式 0=ASC 1=DESC </param>
12 /// <param name="recordcount"> 总记录数 </param>
13 /// <returns></returns>
14 public DataTable GetPagerData( string tablename, string where , string orderfield, string orderDerect, int pageindex, int pagesize, out int totalCount )
15 {
16 SqlParameter[] para = new SqlParameter[ 7 ];
17 para[ 0 ] = new SqlParameter( " @TableName " , tablename);
18 para[ 1 ] = new SqlParameter( " @PageSize " , pagesize);
19 para[ 2 ] = new SqlParameter( " @PageIndex " , pageindex);
20 para[ 3 ] = new SqlParameter( " @OrderColumn " , orderfield);
21 para[ 4 ] = new SqlParameter( " @OrderType " , orderDerect.Trim() == "" ? " Asc " : orderDerect);
22 para[ 5 ] = new SqlParameter( " @WhereStr " , where );
23 para[ 6 ] = new SqlParameter( " @TotalCount " , SqlDbType.Int);
24 para[ 6 ].Direction = ParameterDirection.Output;
25 DataTable dt = DbHelperSQL.RunProcedure( " UP_GetRecordByPage " , para, " resultSet " ).Tables[ 0 ];
26 totalCount = int .Parse(para[ 6 ].Value.ToString());
27 return dt;
28
29 }

同在数据操作层的 DbHelperSQL代码为：

View Code

1 /// <summary>
2 /// 执行存储过程
3 /// </summary>
4 /// <param name="storedProcName"> 存储过程名 </param>
5 /// <param name="parameters"> 存储过程参数 </param>
6 /// <param name="tableName"> DataSet结果中的表名 </param>
7 /// <returns> DataSet </returns>
8 public static DataSet RunProcedure( string storedProcName, IDataParameter[] parameters, string tableName)
9 {
10 using (SqlConnection connection = new SqlConnection(connectionString))
11 {
12 DataSet dataSet = new DataSet();
13 connection.Open();
14 SqlDataAdapter sqlDA = new SqlDataAdapter();
15 sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
16 sqlDA.Fill(dataSet, tableName);
17 connection.Close();
18 return dataSet;
19 }
20 }