Devexpress帮助创建此报告

问题描述

我有两个表，一个是目标，另一个是表销售额

Table Target
+------+--------------+--------+
|  ID  |Category Name | Target |
+------+--------------+--------+
|  1   | AAAA         | 15000  |
|  2   | BBBB         | 50000  |
|  3   | CCCC         | 20000  |
|  4   | DDDD         | 40000  |
|  5   | EEEE         | 30000  |
+------+--------------+--------+

Table Sales

+------+---------+--------------+--------+
|  ID  |  Date   |Category Name | Sale   |
+------+---------+--------------+--------+
|  1   | 01/01/20| AAAA         | 5000   |
|  2   | 01/01/20| BBBB         | 1000   |
|  3   | 02/01/20| CCCC         | 2000   |
|  4   | 03/01/20| DDDD         | 4000   |
|  5   | 03/01/20| EEEE         | 3000   |
|  6   | 03/01/20| AAAA         | 1000   |
|  7   | 05/01/20| EEEE         | 3000   |
|  8   | 06/01/20| BBBB         | 3000   |
|  9   | 02/01/20| CCCC         | 1000   |
| 10   | 02/01/20| DDDD         | 2000   |
+------+---------|--------------+--------+

我想从上表创建以下报告。如何通过devexpress创建此报告。

+----------+--------------+------+
|  Target  |Category Name | Sale |
+----------+--------------+------+
|    15000 | AAAA         | 6000 |
|    50000 | BBBB         | 4000 |
|    20000 | CCCC         | 3000 |
|    40000 | DDDD         | 6000 |
|    30000 | EEEE         | 6000 |
+----------+--------------+------+

解决方法

尝试以下操作：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            DataTable targetTable = new DataTable();
            targetTable.Columns.Add("ID",typeof(int));
            targetTable.Columns.Add("Category Name",typeof(string));
            targetTable.Columns.Add("Target",typeof(int));

            targetTable.Rows.Add(new object[] { 1,"AAAA",150000 });
            targetTable.Rows.Add(new object[] { 2,"BBBB",500000 });
            targetTable.Rows.Add(new object[] { 3,"CCCC",20000 });
            targetTable.Rows.Add(new object[] { 4,"DDDD",40000 });
            targetTable.Rows.Add(new object[] { 5,"EEEE",30000 });

            DataTable salesTable = new DataTable();
            salesTable.Columns.Add("ID",typeof(int));
            salesTable.Columns.Add("Date",typeof(DateTime));
            salesTable.Columns.Add("Category Name",typeof(string));
            salesTable.Columns.Add("Sale",typeof(int));

            salesTable.Rows.Add(new object[] { 1,DateTime.Parse("01/01/20"),5000 });
            salesTable.Rows.Add(new object[] { 2,1000 });
            salesTable.Rows.Add(new object[] { 3,DateTime.Parse("02/01/20"),2000 });
            salesTable.Rows.Add(new object[] { 4,DateTime.Parse("03/01/20"),4000 });
            salesTable.Rows.Add(new object[] { 5,3000 });
            salesTable.Rows.Add(new object[] { 6,1000 });
            salesTable.Rows.Add(new object[] { 7,DateTime.Parse("05/01/20"),3000 });
            salesTable.Rows.Add(new object[] { 8,DateTime.Parse("06/01/20"),3000 });
            salesTable.Rows.Add(new object[] { 9,1000 });
            salesTable.Rows.Add(new object[] { 10,2000 });

            DataTable table = new DataTable();
            table.Columns.Add("Target",typeof(int));
            table.Columns.Add("Category Name",typeof(string));
            table.Columns.Add("Sale",typeof(int));


            var joins = from t in targetTable.AsEnumerable()
                   join s in salesTable.AsEnumerable() on t.Field<string>("Category Name") equals s.Field<string>("Category Name")
                   select new { t = t,s = s};

            var groups = joins.GroupBy(x => x.t.Field<string>("Category Name"));

            foreach (var group in groups)
            {
                table.Rows.Add(new object[] { group.First().t.Field<int>("Target"),group.Key,group.Sum(x => x.s.Field<int>("Sale")) });
            }                                           
        }
    }
}

,

您可以按照tutorial的方法创建devexpress报告

当您将为sql数据源创建查询时，请指定分组并使用Sum函数之类汇总Target列

select Target.Target,sum(Sales.Sale)
from Target
join Sales ...
group by Target.Target

您还可以为报表创建两个查询以生成主从报表布局，并使用报表summary mechanism对目标进行分组和求和，以便您可以向报表中添加drill down feature您的报告以查看详细报告。