分页存储过程（支持多字段排序）及调用& output多参数存储过程调用应用

 存储过程：

 

CREATE PROC SP_PageList
@tbname     sysname,           --要分页显示的表名
@FieldKey   sysname,           --用于定位记录的主键(惟一键)字段,只能是单个字段
@PageCurrent int=1,             --要显示的页码
@PageSize   int=10,            --每页的大小(记录数)
@FieldShow  nvarchar(1000)='',  --以逗号分隔的要显示的字段列表,如果不指定,则显示所有字段
@FieldOrder  nvarchar(1000)='', --以逗号分隔的排序字段列表,可以指定在字段后面指定DESC/ASC
                                          --用于指定排序顺序
@Where     nvarchar(1000)='',  --查询条件
@RecordCount  int OUTPUT,       --总记录数
@PageCount  int OUTPUT        --总页数
AS
DECLARE @sql nvarchar(4000)
SET NOCOUNT ON
--检查对象是否有效
IF OBJECT_ID(@tbname) IS NULL
BEGIN
RAISERROR(N'对象"%s"不存在',1,16,@tbname)
RETURN
END
IF OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTable')=0
AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsView')=0
AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTableFunction')=0
BEGIN
RAISERROR(N'"%s"不是表、视图或者表值函数',1,16,@tbname)
RETURN
END

--分页字段检查
IF ISNULL(@FieldKey,N'')=''
BEGIN
RAISERROR(N'分页处理需要主键（或者惟一键）',1,16)
RETURN
END

--其他参数检查及规范
IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1
IF ISNULL(@PageSize,0)<1 SET @PageSize=10
IF ISNULL(@FieldShow,N'')=N'' SET @FieldShow=N'*'
IF ISNULL(@FieldOrder,N'')=N''
SET @FieldOrder=N''
ELSE
SET @FieldOrder=N'ORDER BY '+LTRIM(@FieldOrder)
IF ISNULL(@Where,N'')=N''
SET @Where=N''
ELSE
SET @Where=N'WHERE ('+@Where+N')'

--如果@PageCount为NULL值,则计算总页数(这样设计可以只在第一次计算总页数,以后调用时,把总页数传回给存储过程,避免再次计算总页数,对于不想计算总页数的处理而言,可以给@PageCount赋值)
IF @PageCount IS NULL
BEGIN
SET @sql=N'SELECT @PageCount=COUNT(*)'
+N' FROM '+@tbname
+N' '+@Where
EXEC sp_executesql @sql,N'@PageCount int OUTPUT',@PageCount OUTPUT
SET @RecordCount = @PageCount
SET @PageCount=(@PageCount+@PageSize-1)/@PageSize
END

--计算分页显示的TOPN值
DECLARE @TopN varchar(20),@TopN1 varchar(20)
SELECT @TopN=@PageSize,
@TopN1=@PageCurrent*@PageSize

--第一页直接显示
IF @PageCurrent=1
EXEC(N'SELECT TOP '+@TopN
+N' '+@FieldShow
+N' FROM '+@tbname
+N' '+@Where
+N' '+@FieldOrder)
ELSE
BEGIN
SELECT @PageCurrent=@TopN1,
@sql=N'SELECT @n=@n-1,@s=CASE WHEN @n<'+@TopN
+N' THEN @s+N'',''+QUOTENAME(RTRIM(CAST('+@FieldKey
+N' as varchar(8000))),N'''''''') ELSE N'''' END FROM '+@tbname
+N' '+@Where
+N' '+@FieldOrder
SET ROWCOUNT @PageCurrent
EXEC sp_executesql @sql,
N'@n int,@s nvarchar(4000) OUTPUT',
@PageCurrent,@sql OUTPUT
SET ROWCOUNT 0
IF @sql=N''
EXEC(N'SELECT TOP 0'
+N' '+@FieldShow
+N' FROM '+@tbname)
ELSE
BEGIN
SET @sql=STUFF(@sql,1,1,N'')
--执行查询
EXEC(N'SELECT TOP '+@TopN
+N' '+@FieldShow
+N' FROM '+@tbname
+N' WHERE '+@FieldKey
+N' IN('+@sql
+N') '+@FieldOrder)
END
END

GO

 

 

调用测试：

DECLARE  @rcount int;
DECLARE  @pcount int;
exec SP_PageList 'Orders','OrderID',10,12,'*','ShippedDate,OrderID','',@rcount output,@pcount output

 

 

 

 

 

SqlOp.cs内容：

 

 

      public static DataSet ExecuteQuery(string connString, CommandType cmdType, string cmdText,out int RecordCount,out int PageCount, params SqlParameter[] cmdParms)
        {
            DataSet mySet = new DataSet();
            SqlCommand cmd = new SqlCommand();
            using (SqlConnection myConnection = new SqlConnection(connString))
            {
                PrepareCommand(cmd, myConnection, null, cmdType, cmdText, cmdParms);
                SqlDataAdapter da = new SqlDataAdapter(cmd);
                da.Fill(mySet);
                myConnection.Close();
            }
            RecordCount = (int)cmd.Parameters[7].Value;
            PageCount = (int)cmd.Parameters[8].Value;
            return mySet;
        }

 

 

 PublicClass.cs内容：

 

  public static DataSet GetListbyPage(string tbName, string FieldKey, int PageCurrent, int PageSize, string FieldShow, string FieldOrder, string strWhere, out  int RecordCount, out int PageCount)
        {

            SqlParameter[] parameters = {
                new SqlParameter("@tbname", SqlDbType.VarChar,50),
                new SqlParameter("@FieldKey", SqlDbType.VarChar,50),
                new SqlParameter("@PageCurrent", SqlDbType.Int,4),
                new SqlParameter("@PageSize", SqlDbType.Int,4),
                new SqlParameter("@FieldShow", SqlDbType.VarChar,50),
                new SqlParameter("@FieldOrder", SqlDbType.VarChar,50),
                new SqlParameter("@Where", SqlDbType.VarChar,50),
                new SqlParameter("@RecordCount", SqlDbType.Int,4),
                new SqlParameter("@PageCount", SqlDbType.Int,4)
            };

             parameters[0].Value = tbName;
             parameters[1].Value = FieldKey;
             parameters[2].Value = PageCurrent;
             parameters[3].Value = PageSize;
             parameters[4].Value = FieldShow;
             parameters[5].Value = FieldOrder;
             parameters[6].Value = strWhere;
             parameters[7].Direction = ParameterDirection.Output;
             parameters[8].Direction = ParameterDirection.Output;

             return SqlOp.ExecuteQuery(SqlOp.CONNDB, CommandType.StoredProcedure, "SP_PageList", out RecordCount, out PageCount, parameters);
        }

 

 

 

 

PageModelList.aspx.cs 内容：

 

DataSet ds = TestPublic.PublicClass.GetListbyPage("tbl_PageModel", "PM_ID", _pageIndex, _pageSize, "*", "", ReturnFilter(), out _rCount, out  _pageCount);
        this.rptList.DataSource = ds;
        this.rptList.DataBind();
        Response.Write(string.Format("总记录书：{0}，总页数：{1}", _rCount.ToString(), _pageCount.ToString()));