1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using OfficeOpenXml;
 5 using System.IO;
 6 using OfficeOpenXml.Extends;
 7 
 8 namespace Test
 9 {
10   class Program
11   {
12     static void Main(string[] args)
13     {
14       FileInfo info = new FileInfo("tpl.xlsx");
15       ExcelPackage packet = new ExcelPackage(info);
16       var book = packet.Workbook;
17 
18       Random random = new Random();
19 
20       Dictionary<string, IEnumerable<string>> dic = new Dictionary<string, IEnumerable<string>>();
21       dic.Add("水果", new string[] { "桃子", "李子", "香蕉", "梨" });
22       dic.Add("蔬菜", new string[] { "青菜", "土豆", "黄瓜", "啤酒" });
23 
24       //构造model
25       var model = new
26       {
27         ProjectName = "灰太狼",
28         Name = "Jeff",
29         CreatedAt = DateTime.Now,
30         BuyerName = "Bill",
31         Cates = dic.Select(m => new
32         {
33           Name = m.Key,
34           Items = m.Value.Select(n => new
35           {
36             Name = n,
37             Price = (decimal)random.Next(1, 100),
38             Amount = random.Next(1, 100)
39           })
40         })
41       };
42 
43       //下面的FillModel就是OfficeOpenXml.Extends提供的拓展方法, 1.0.1.0也就只有这个拓展方法
44       book.Worksheets.First().FillModel(model);
45 
46       packet.SaveAs(new FileInfo(DateTime.Now.ToString("yyyyMMddHHmmss") + ".xlsx"));
47     }
48   }
49 }