最近因为施工业的物料管理系统,其中涉及大量的物料需要管理和汇总,数据量非常庞大,之前尝试自己通过将原始数据,加工处理建模,在后台代码中通过分组,转置再显示到Web页面中,但自己编写的代码量非常大,而且性能简直无法忍受。后来使用矩表非常好的解决了需求,本文主要介绍之前如何通过代码将数据展现在页面中,以及使用矩表控件创建行列转置以及动态列的表格,并显示在网页中。
1. 行列转置代码片段
public static DataTable GetCrossTable(DataTable dt) { if (dt == null || dt.Columns.Count != 3 || dt.Rows.Count == 0) { return dt; } else { DataTable result = new DataTable(); result.Columns.Add(dt.Columns[0].ColumnName); DataTable dtColumns = dt.DefaultView.ToTable("dtColumns", true, dt.Columns[1].ColumnName); for (int i = 0; i < dtColumns.Rows.Count; i++) { string colName; if (dtColumns.Rows[1][0] is DateTime) { colName = Convert.ToDateTime(dtColumns.Rows[i][0]).ToString(); } else { colName = dtColumns.Rows[i][0].ToString(); } result.Columns.Add(colName); result.Columns[i + 1].DefaultValue = "0"; } DataRow drNew = result.NewRow(); drNew[0] = dt.Rows[0][0]; string rowName = drNew[0].ToString(); foreach (DataRow dr in dt.Rows) { string colName = dr[1].ToString(); double dValue = Convert.ToDouble(dr[2]); if (dr[0].ToString().Equals(rowName, StringComparison.CurrentCultureIgnoreCase)) { drNew[colName] = dValue.ToString(); } else { result.Rows.Add(drNew); drNew = result.NewRow(); drNew[0] = dr[0]; rowName = drNew[0].ToString(); drNew[colName] = dValue.ToString(); } } result.Rows.Add(drNew); return result; } }
2. 实现多级分组逻辑示例代码:
public void GroupByClassLeverl() { var query = from inforCode in ClassReportDetail group InfoCode by BigClassName into newGroup orderby newGroup.Key select newGroup; foreach (var BigClassName in ClassReportDetail ) { Console.WriteLine("Key: {0}", nameGroup.Key); foreach (var ClassName in nameGroup) { Console.WriteLine("\t{0}, {1}", student.BigClassName , student.ClassName ); …………
} } }
3. SQL语句实现中实现汇总分级功能,进行7张表的复杂连接和汇总:
每一张表中包含多列,需要做出多层连接和排序,并根据用户输入对数据进行过滤
select a.*,b.SupplyMode,h.ClassName,g.ClassName BigClassName,e.ReceiveDepName,f.W_ReceiveDepName,
isnull(b.reQuantity,0)reQuantity,isnull(b.reBookSum,0) reBookSum,isnull(d.mQuantity,0) mQuantity,isnull(d.mBookSum,0)
…, isnull(f.W_allQuantity,0) W_allQuantity,isnull(f.W_allAllotSum,0) W_allAllotSum,isnull(f.W_AllotBookSum,0) W_AllotBookSum from (select a.InfoCode,a.InfoName,a.InfoModel,a.InfoUnit,a.ClassNodebh,a.Rate,a.NonRatePrice,a.BookPrice,a.Manufacturer,a.BatchNo,a.BarCode,a.Storeroom,a.InfoRemark from ( select b.InfoCode,b.InfoName,b.InfoModel,b.InfoUnit,b.ClassNodebh,b.Rate,b.NonRatePrice,b.BookPrice,b.Manufacturer,b.BatchNo,b.BarCode,b.Storeroom,b.InfoRemark from dbo.M_MonthStore b where left(b.ProjectID,LEN(@projectid))=@projectid and b.Month>=@startmonth and b.Month<=@endmonth and b.MonthBalanceNum!=0 group by b.InfoCode,b.InfoName,b.InfoModel,b.InfoUnit,b.ClassNodebh,b.Rate,b.NonRatePrice,b.BookPrice,b.Manufacturer,b.BatchNo,b.BarCode,b.Storeroom,b.InfoRemark union all select InfoCode,InfoName,InfoModel,InfoUnit,ClassNodebh,Rate,NonRatePrice,BookPrice,Manufacturer,BatchNo,BarCode,b.Storeroom,InfoRemark from dbo.M_ReceiveOrder a inner join dbo.M_ReceiveOrderItem b on a.ProjectID=b.ProjectID and a.OrderID=b.OrderID where left(a.ProjectID,LEN(@projectid))=@projectid and a.OrderDate>=@startdate AND a.OrderDate<=@enddate AND a.IsAudit=1 union all ……) b on a.InfoCode=b.InfoCode and a.InfoName=b.InfoName and a.InfoModel=b.InfoModel and a.InfoUnit=b.InfoUnit and a.ClassNodebh=b.ClassNodebh and a.StoreRoom=b.StoreRoom ………. order by supplymode,ReceiveDepName,W_ReceiveDepName desc
最终只能将数据单一的呈现出来,而且样式非常简单的,将近上万条的数据呈现起来根本无法忍耐,尝尝会导致页面崩溃死掉。
使用报表提供的矩表控件实现行列转置,就不需要再写那么复杂的行列转置和分组代码,而且能共根据物料的供应方式来自动生成列,将数据展现在最终页面中,
使用矩表控件实现步骤:
1. 添加RDL报表
2. 为报表添加数据源
3. 添加数据集
在数据集窗口中输入SQL 语句:
select * From ClassReportDataTable.
获取字段
4. 添加矩表控件
5. 搭建报表结构
5.1 首先添加按照一级类别和二级类别添加行分组
选中行分组单元格,添加行分组-》子分组
5.2 添加供应方式动态列
右键单击列分组单元格,选择插入列分组
5.3 最后将所有数据绑定到矩表中,这样大功就告成了。
再也不用痛苦的写前端显示和超复杂的性能优化代码,在之前页面刷半个小时都没有办法刷出来,用户是真的无法忍耐,所以考虑用现有的比较成熟的报表控件,果然矩表控件拖拖拽拽就可以解决,