1、安装引用EPPlus
1)使用Nuget界面管理器
搜索 "EPPlus" 在列表中分别找到它,点击 "安装"
相关文档:VS(Visual Studio)中Nuget的使用
2)使用Package Manager命令安装
PM> Install-Package EPPlus
3)使用.NET CLI命令安装
> dotnet add package EPPlus
2、写入保存Excel(.xlsx)文件
写入保存到已经存在的Excel(.xlsx)文件的示例代码,具体如下:
using OfficeOpenXml;
using OfficeOpenXml.Drawing;
using OfficeOpenXml.Style;
using System;
using System.Drawing;
using System.IO;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
var filename = "file.xlsx";
ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
using (ExcelPackage package = new ExcelPackage(new FileInfo(filename)))
{
ExcelWorksheet worksheet = null;
//处理Sheet1工作表。(如果处理多个,可以在此用for循环处理)
//if (package.Workbook.Worksheets.Count > 0)
//{
worksheet = package.Workbook.Worksheets["Sheet1"];
//}
//else
//{
//worksheet = package.Workbook.Worksheets.Add("Sheet1");
//}
worksheet.SetValue($"B3", "AAA");// 设置值
worksheet.InsertRow(6, 2, 6); // 插入行, 参数1:在第几行插入,参数2:插入几行,参数3:从第几行赋值格式
worksheet.Cells[$"B2:D2"].Merge = true; // 合并从B2到D2的单元格
var logo = Image.FromFile($@"{Environment.CurrentDirectory}/1.jpg"); // 读取图片
var picture = worksheet.Drawings.AddPicture("logo", logo); // 添加图片
picture.SetSize(130, 32); // 设置图片大小
picture.SetPosition(1, 3, 1, 3); // 插入图片,参数1:插入的行,参数2:行偏移量,参数3:插入的列,参数4:列偏移量
worksheet.Cells.Style.ShrinkToFit = true;//单元格自动适应大小
worksheet.Row(1).Height = 15;//设置行高
worksheet.Row(1).CustomHeight = true;//自动调整行高
worksheet.Column(1).Width = 15;//设置列宽
worksheet.Cells.Style.WrapText = true;//自动换行
worksheet.Cells[1, 1].Style.Font.Bold = true;//字体为粗体
worksheet.Cells[1, 1].Style.Font.Color.SetColor(Color.White);//字体颜色
worksheet.Cells[1, 1].Style.Font.Name = "微软雅黑";//字体
worksheet.Cells[1, 1].Style.Font.Size = 12;//字体大小
worksheet.Cells[5, 3].Style.Numberformat.Format = "#,##0.00";//这是保留两位小数
worksheet.Cells["D2:D5"].Formula = "B2*C2";//这是乘法的公式,意思是第二列乘以第三列的值赋值给第四列,这种方法比较简单明了
worksheet.Cells[6, 2, 6, 4].Formula = string.Format("SUBTOTAL(9,{0})", new ExcelAddress(2, 2, 5, 2).Address);//这是自动求和的方法,至于subtotal的用法你需要自己去了解了
worksheet.Cells[1, 1].Style.Fill.PatternType = ExcelFillStyle.Solid;
worksheet.Cells[1, 1].Style.Fill.BackgroundColor.SetColor(Color.FromArgb(128, 128, 128));//设置单元格背景色
ExcelPicture picLink = worksheet.Drawings.AddPicture("logo1", Image.FromFile(@"firstbg.jpg"), new ExcelHyperLink("https:\\www.cjavapy.com", UriKind.Relative)); //图片超链接
picLink.SetPosition(15, 3, 2, 3);
picLink.SetSize(493, 211);
worksheet.Cells[1, 1].Hyperlink = new ExcelHyperLink("https:\\www.cjavapy.com", UriKind.Relative); //单元格超链接
worksheet.Cells[1, 1].Value = "date";
worksheet.Cells[1, 2].Value = "price";
worksheet.Cells[1, 3].Value = "volume";
var random = new Random();
for (int i = 0; i < 10; i++)
{
worksheet.Cells[i + 2, 1].Value = DateTime.Today.AddDays(i);
worksheet.Cells[i + 2, 2].Value = random.NextDouble() * 1e3;
worksheet.Cells[i + 2, 3].Value = random.Next() / 1e3;
}
worksheet.Cells[2, 1, 11, 1].Style.Numberformat.Format = "dd/MM/yyyy";
worksheet.Cells[2, 2, 11, 2].Style.Numberformat.Format = "#,##0.111111";
worksheet.Cells[2, 3, 11, 3].Style.Numberformat.Format = "#,##0";
worksheet.Column(1).AutoFit();
worksheet.Column(2).AutoFit();
worksheet.Column(3).AutoFit();
package.Save();
}
}
}
}
相关文档:
.NET Core(C#) EPPlus读取Excel(.xlsx)文件的方法及示例代码