1 使用插件名称Epplus，多个Sheet页数据应用，Demo为柱状图（Epplus支持多种图表）
2 Epplus 的安装和引用
新建一个工程文件或控制台应用程序 打开 Vs2017 Tools 的Nuget 包管理器，使用命令 install-package Epplus
3 开始在创建的工程中编写代码，实现功能
4 具体实现流程代码如下：
1 using OfficeOpenXml; 2 using OfficeOpenXml.Drawing; 3 using OfficeOpenXml.Drawing.Chart; 4 using OfficeOpenXml.Style; 5 using System; 6 using System.Collections.Generic; 7 using System.Drawing; 8 using System.IO; 9 using System.Linq; 10 using System.Text; 11 using System.Threading.Tasks; 12 13 namespace EpplusTest 14 { 15 public class Program 16 { 17 static void Main(string[] args) 18 { 19 FileInfo newFile = new FileInfo(@"d:\test.xlsx"); 20 if (newFile.Exists) 21 { 22 newFile.Delete(); 23 newFile = new FileInfo(@"d:\test.xlsx"); 24 } 25 26 using (ExcelPackage package = new ExcelPackage(newFile)) 27 { 28 #region 创建多个Sheet页 29 for (int i = 0; i < 5; i++) 30 { 31 package.Workbook.Worksheets.Add("Demo" + i); 32 } 33 ExcelWorksheet worksheet = package.Workbook.Worksheets["Demo0"]; 34 ExcelWorksheet worksheet1 = package.Workbook.Worksheets["Demo1"]; 35 36 #endregion 37 38 #region 1 模拟填充数据 39 worksheet1.Cells[1, 1].Value = "名称"; 40 worksheet1.Cells[1, 2].Value = "价格"; 41 worksheet1.Cells[1, 3].Value = "销量"; 42 43 worksheet1.Cells[2, 1].Value = "苹果"; 44 worksheet1.Cells[2, 2].Value = 56; 45 worksheet1.Cells[2, 3].Value = 100; 46 47 worksheet1.Cells[3, 1].Value = "华为"; 48 worksheet1.Cells[3, 2].Value = 45; 49 worksheet1.Cells[3, 3].Value = 150; 50 51 worksheet1.Cells[4, 1].Value = "小米"; 52 worksheet1.Cells[4, 2].Value = 38; 53 worksheet1.Cells[4, 3].Value = 130; 54 55 worksheet1.Cells[5, 1].Value = "OPPO"; 56 worksheet1.Cells[5, 2].Value = 22; 57 worksheet1.Cells[5, 3].Value = 200; 58 #endregion 59 60 #region 2 构造图表 61 worksheet.Cells.Style.WrapText = true; 62 worksheet.View.ShowGridLines = false;//去掉sheet的网格线 63 using (ExcelRange range = worksheet.Cells[1, 1, 5, 3]) 64 { 65 range.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center; 66 range.Style.VerticalAlignment = ExcelVerticalAlignment.Center; 67 } 68 69 using (ExcelRange range = worksheet.Cells[1, 1, 1, 3]) 70 { 71 range.Style.Font.Bold = true; 72 range.Style.Font.Color.SetColor(Color.White); 73 range.Style.Font.Name = "微软雅黑"; 74 range.Style.Font.Size = 12; 75 range.Style.Fill.PatternType = ExcelFillStyle.Solid; 76 range.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(128, 128, 128)); 77 } 78 79 worksheet1.Cells[1, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 80 worksheet1.Cells[1, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 81 worksheet1.Cells[1, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 82 83 worksheet1.Cells[2, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 84 worksheet1.Cells[2, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 85 worksheet1.Cells[2, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 86 87 worksheet1.Cells[3, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 88 worksheet1.Cells[3, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 89 worksheet1.Cells[3, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 90 91 worksheet1.Cells[4, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 92 worksheet1.Cells[4, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 93 worksheet1.Cells[4, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 94 95 worksheet1.Cells[5, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 96 worksheet1.Cells[5, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 97 worksheet1.Cells[5, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191)); 98 99 ExcelChart chart = worksheet.Drawings.AddChart("chart", eChartType.ColumnClustered);100 ExcelChartSerie serie = chart.Series.Add(worksheet1.Cells[2, 3, 5, 3], worksheet1.Cells[2, 1, 5, 1]);//引用worksheet1的数据填充图表的X轴和Y轴101 serie.HeaderAddress = worksheet1.Cells[1, 3];102 #endregion103 104 #region 3 设置图表的样式105 chart.SetPosition(40, 10);106 chart.SetSize(500, 300);107 chart.Title.Text = "销量走势";108 chart.Title.Font.Color = Color.FromArgb(89, 89, 89);109 chart.Title.Font.Size = 15;110 chart.Title.Font.Bold = true;111 chart.Style = eChartStyle.Style15;112 chart.Legend.Border.LineStyle = eLineStyle.SystemDash;113 chart.Legend.Border.Fill.Color = Color.FromArgb(217, 217, 217);114 #endregion115 package.Save();116 }117 }118 }119 }
5 效果展示：
废话不多说，直接上代码
////// 分红包 /// public class RandomMoney { public RandomMoney(double totalMoney, int totalCount) { RemainMoney = totalMoney; RemainCount = totalCount; } ////// 剩下的金额 /// private double RemainMoney { get; set; } ////// 剩下的次数 /// private double RemainCount { get; set; } private Random r = new Random(); ////// 获取当次红包的金额 /// ///public double GetRandomMoney() { if (RemainCount < 1) throw new Exception("红包已经抢完了"); if (RemainCount == 1)//最后一次 { RemainCount--; return (double)Math.Round(RemainMoney * 100) / 100; } double min = 0.01; double max = RemainMoney / RemainCount * 2; double money = r.NextDouble() * max;//随机收取本次金额 money = money <= min ? 0.01 : money;//判断最小值 money = Math.Floor(money * 100) / 100; RemainCount--;//红包个数递减 RemainMoney = RemainMoney - money;//计算剩余金额 return money;//返回本次领取金额 } }
下面写个demo测试一下。
class Program { static void Main(string[] args) { double totalMoney = 200; int totalCount = 10; RandomMoney random = new RandomMoney(totalMoney, totalCount); for (int i = 0; i < totalCount; i++) { Console.WriteLine($"第{i + 1}个红包:{random.GetRandomMoney()}元"); } Console.ReadKey(); } } 上面的案例是一个200块钱的红包分10份，打印结果如下
这种分红包的方式有一个缺陷，就是 红包的金额 <= 剩下的金额 / 剩下的次数
大家有没有更好的分红包方式呢