DWZ框架分页和搜索功能

来源：互联网发布：unity3d wsd人物行走编辑：程序博客网时间：2024/06/08 21:49

1.分页我用的是一个常用的SQL存储过程

SET QUOTED_IDENTIFIER ON GOSET ANSI_NULLS ON GOALTER  PROC PROCE_PageView(@tbname     nvarchar(100),               --要分页显示的表名@FieldKey   nvarchar(1000),      --用于定位记录的主键(惟一键)字段,可以是逗号分隔的多个字段@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@WhereString    nvarchar(1000)=N'',     --查询条件@RecordCount int OUTPUT             --总记录数)ASSET 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)    RETURNEND--其他参数检查及规范IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1IF ISNULL(@PageSize,0)<1 SET @PageSize=10IF 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(@WhereString,N'')=N''    SET @WhereString=N''ELSE    SET @WhereString=N'WHERE ('+@WhereString+N')'--如果@RecordCount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@RecordCount赋值)IF @RecordCount IS NULLBEGIN    DECLARE @sql nvarchar(4000)    SET @sql=N'SELECT @RecordCount=COUNT(*)'        +N' FROM '+@tbname        +N' '+@WhereString    EXEC sp_executesql @sql,N'@RecordCount int OUTPUT',@RecordCount OUTPUTEND--计算分页显示的TOPN值DECLARE @TopN varchar(20),@TopN1 varchar(20)SELECT @TopN=@PageSize,    @TopN1=(@PageCurrent-1)*@PageSize--第一页直接显示IF @PageCurrent=1    EXEC(N'SELECT TOP '+@TopN        +N' '+@FieldShow        +N' FROM '+@tbname        +N' '+@WhereString        +N' '+@FieldOrder)ELSEBEGIN    --处理别名    IF @FieldShow=N'*'        SET @FieldShow=N'a.*'    --生成主键(惟一键)处理条件    DECLARE @Where1 nvarchar(4000),@Where2 nvarchar(4000),        @s nvarchar(1000),@Field sysname    SELECT @Where1=N'',@Where2=N'',@s=@FieldKey    WHILE CHARINDEX(N',',@s)>0        SELECT @Field=LEFT(@s,CHARINDEX(N',',@s)-1),            @s=STUFF(@s,1,CHARINDEX(N',',@s),N''),            @Where1=@Where1+N' AND a.'+@Field+N'=b.'+@Field,            @Where2=@Where2+N' AND b.'+@Field+N' IS NULL',            @WhereString=REPLACE(@WhereString,@Field,N'a.'+@Field),            @FieldOrder=REPLACE(@FieldOrder,@Field,N'a.'+@Field),            @FieldShow=REPLACE(@FieldShow,@Field,N'a.'+@Field)    SELECT @WhereString=REPLACE(@WhereString,@s,N'a.'+@s),        @FieldOrder=REPLACE(@FieldOrder,@s,N'a.'+@s),        @FieldShow=REPLACE(@FieldShow,@s,N'a.'+@s),        @Where1=STUFF(@Where1+N' AND a.'+@s+N'=b.'+@s,1,5,N''),            @Where2=CASE            WHEN @WhereString='' THEN N'WHERE ('            ELSE @WhereString+N' AND ('            END+N'b.'+@s+N' IS NULL'+@Where2+N')'    --执行查询    EXEC(N'SELECT TOP '+@TopN        +N' '+@FieldShow        +N' FROM '+@tbname        +N' a LEFT JOIN(SELECT TOP '+@TopN1        +N' '+@FieldKey        +N' FROM '+@tbname        +N' a '+@WhereString        +N' '+@FieldOrder        +N')b ON '+@Where1        +N' '+@Where2        +N' '+@FieldOrder)ENDGOSET QUOTED_IDENTIFIER OFF GOSET ANSI_NULLS ON GO

很详细哦DbHelper.cs

    #region 执行分页存储过程,并输出总行数    /// <summary>    /// 执行分页存储过程,并输出总行数    /// </summary>    /// <param name="tableName">表名</param>    /// <param name="iDName">主键ID</param>    /// <param name="pageIndex">当前页</param>    /// <param name="pageSize">每页显示数量</param>    /// <param name="FieldShow">显示字段</param>    /// <param name="orderby">排序字段</param>    /// <param name="where">where条件</param>    /// <param name="rowCount">返回总行数</param>    /// <returns></returns>    public DataTable ExecProPageList(string tableName, string iDName, int pageIndex, int pageSize, string FieldShow, string orderby, string where, out int rowCount)    {        rowCount = 0;        SqlParameter[] parameters = {                new SqlParameter("@tbname", SqlDbType.NVarChar,30),                new SqlParameter("@FieldKey", SqlDbType.NVarChar,20),                new SqlParameter("@PageCurrent", SqlDbType.Int,4),                new SqlParameter("@PageSize ", SqlDbType.Int,4),                new SqlParameter("@FieldShow", SqlDbType.NVarChar,255),                new SqlParameter("@FieldOrder", SqlDbType.NVarChar,255),                new SqlParameter("@WhereString", SqlDbType.NVarChar,255),                new SqlParameter("@RecordCount", SqlDbType.Int,4)           };        parameters[0].Value = tableName;        parameters[1].Value = iDName;        parameters[2].Value = pageIndex;        parameters[3].Value = pageSize;        parameters[4].Value = FieldShow;        parameters[5].Value = orderby;        parameters[6].Value = where;        parameters[7].Value = rowCount;        parameters[7].Direction = ParameterDirection.Output;        SqlCommand cmd = new SqlCommand();        cmd.Connection = Connection;        cmd.CommandText = "PROCE_PageView";// "GetPageDataOut";        cmd.CommandType = CommandType.StoredProcedure;        cmd.Parameters.AddRange(parameters);        SqlDataAdapter da = new SqlDataAdapter(cmd);        DataTable dt = new DataTable();        da.Fill(dt);        rowCount = Convert.ToInt32(cmd.Parameters["@RecordCount"].Value);        return dt;    }    #endregion

3.页面调用

 DataTable dt = sqldb.ExecProPageList("t_translator", "name", PageNum, NumPerPage, "", "", Where1, out TotalRe);

where1条件时，最好判断一下是否有值。