Net Core 3.0 EPPlus对Excel导入导出

1：EPPlus.core 弃用的情况下（EPPlus.core 不支持net Core3.0）可使用 EPPlus 包【因文件超10M，在最下面提供百度网盘地址】

2：EPPlus 引用方式

A）工具---->NuGet 包管理器--->管理解决方案的NuGet程序包--->搜索安装

B） 工具---->NuGet 包管理器--->程序包管理器控制台--->Install-Package EPPlus

Net Core 3.0 EPPlus对Excel导入导出

3：导出

a:工具方法

 1         /// <summary>
 2         /// 导出
 3         /// </summary>
 4         /// <param name="ePPlus"></param>
 5         /// <returns></returns>
 6         public static MemoryStream Export(ICollection<EPPlus> ePPlus)
 7         {
 8             MemoryStream stream = new MemoryStream();
 9             ExcelPackage package = new ExcelPackage(stream);
10 
11             package.Workbook.Worksheets.Add("EPPlus");
12             ExcelWorksheet sheet = package.Workbook.Worksheets[0];
13 
14             #region write header
15             sheet.Cells[1, 1].Value = "用户名";
16             sheet.Cells[1, 2].Value = "年龄";
17             sheet.Cells[1, 3].Value = "性别";
18             sheet.Cells[1, 4].Value = "成绩";
19 
20             using (ExcelRange range = sheet.Cells[1, 1, 1, 4])
21             {
22                 range.Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
23                 range.Style.Fill.BackgroundColor.SetColor(Color.Gray);
24                 range.Style.Border.Bottom.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thick;
25                 range.Style.Border.Bottom.Color.SetColor(Color.Black);
26                 range.AutoFitColumns(4);
27             }
28             #endregion
29 
30             #region write content
31             int pos = 2;
32             foreach (EPPlus s in ePPlus)
33             {
34                 sheet.Cells[pos, 1].Value = s.Name;
35                 sheet.Cells[pos, 2].Value = s.Age;
36                 sheet.Cells[pos, 3].Value = s.Gender;
37                 sheet.Cells[pos, 4].Value = s.Achievement;
38 
39                 using (ExcelRange range = sheet.Cells[pos, 1, pos, 4])
40                 {
41                     range.Style.Border.Bottom.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
42                     range.Style.Border.Bottom.Color.SetColor(Color.Black);
43                     range.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Left;
44                 }
45 
46                 pos++;
47             }
48             #endregion
49 
50             package.Save();
51 
52             return stream;
53         }

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