C# 使用Epplus导出数据到Excel

简介：Epplus是一个使用Open Office XML（Xlsx）文件格式，能读写Excel 2007/2010文件的开源组件

功效：支持对excel文档的汇入汇出，图表（excel自带的图表基本都可以实现）的列印

源代码下载：https://github.com/caofangsheng93/ExcelExportInMvc

安装：NuGet

导出思路:

准备:

1.创建对象

namespace Models
{
    public class Student
    {
        public int ID { get; set; }

public string Name { get; set; }

public string Sex { get; set; }

public int Age { get; set; }

public string Email { get; set; }
}
}

1.创建Excel帮助类

using OfficeOpenXml;
using OfficeOpenXml.Style;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Linq;

namespace Common
{
    /// <summary>
    /// Excel导出帮助类
    /// </summary>
    public class ExcelExportHelper
    {
        public static string ExcelContentType => "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";

/// <summary>
        /// List转DataTable
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="data"></param>
        /// <returns></returns>
        public static DataTable ListToDataTable<T>(List<T> data)
        {
            PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));
            DataTable dataTable = new DataTable();
            for (int i = 0; i < properties.Count; i++)
            {
                PropertyDescriptor property = properties[i];
                dataTable.Columns.Add(property.Name, Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType);
            }
            object[] values = new object[properties.Count];
            foreach (T item in data)
            {
                for (int i = 0; i < values.Length; i++)
                {
                    values[i] = properties[i].GetValue(item);
                }

dataTable.Rows.Add(values);
            }
            return dataTable;
        }

        /// <summary>
        /// 导出Excel
        /// </summary>
        /// <param name="dataTable">数据源</param>
        /// <param name="heading">工作簿Worksheet</param>
        /// <param name="showSrNo">//是否显示行编号</param>
        /// <param name="columnsToTake">要导出的列</param>
        /// <returns></returns>
        public static byte[] ExportExcel(DataTable dataTable, string heading = "", bool showSrNo = false, params string[] columnsToTake)
        {
            byte[] result;
            using (ExcelPackage package = new ExcelPackage())
            {
                ExcelWorksheet workSheet = package.Workbook.Worksheets.Add($"{heading}Data");
                int startRowFrom = string.IsNullOrEmpty(heading) ? 1 : 3; //开始的行
                //是否显示行编号
                if (showSrNo)
                {
                    DataColumn dataColumn = dataTable.Columns.Add("#", typeof(int));
                    dataColumn.SetOrdinal(0);
                    int index = 1;
                    foreach (DataRow item in dataTable.Rows)
                    {
                        item[0] = index;
                        index++;
                    }
                }

//Add Content Into the Excel File
                workSheet.Cells["A" + startRowFrom].LoadFromDataTable(dataTable, true);
                // autofit width of cells with small content
                int columnIndex = 1;
                foreach (DataColumn item in dataTable.Columns)
                {
                    ExcelRange columnCells = workSheet.Cells[workSheet.Dimension.Start.Row, columnIndex, workSheet.Dimension.End.Row, columnIndex];
                    int maxLength = columnCells.Max(cell => cell.Value.ToString().Count());
                    if (maxLength < 150)
                    {
                        workSheet.Column(columnIndex).AutoFit();
                    }
                    columnIndex++;
                }
                // format header - bold, yellow on black
                using (ExcelRange r = workSheet.Cells[startRowFrom, 1, startRowFrom, dataTable.Columns.Count])
                {
                    r.Style.Font.Color.SetColor(System.Drawing.Color.White);
                    r.Style.Font.Bold = true;
                    r.Style.Fill.PatternType = ExcelFillStyle.Solid;
                    r.Style.Fill.BackgroundColor.SetColor(System.Drawing.ColorTranslator.FromHtml("#1fb5ad"));
                }

// format cells - add borders
                using (ExcelRange r = workSheet.Cells[startRowFrom + 1, 1, startRowFrom + dataTable.Rows.Count, dataTable.Columns.Count])
                {
                    r.Style.Border.Top.Style = ExcelBorderStyle.Thin;
                    r.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
                    r.Style.Border.Left.Style = ExcelBorderStyle.Thin;
                    r.Style.Border.Right.Style = ExcelBorderStyle.Thin;

r.Style.Border.Top.Color.SetColor(System.Drawing.Color.Black);
                    r.Style.Border.Bottom.Color.SetColor(System.Drawing.Color.Black);
                    r.Style.Border.Left.Color.SetColor(System.Drawing.Color.Black);
                    r.Style.Border.Right.Color.SetColor(System.Drawing.Color.Black);
                }

// removed ignored columns
                for (int i = dataTable.Columns.Count - 1; i >= 0; i--)
                {
                    if (i == 0 && showSrNo)
                    {
                        continue;
                    }
                    if (!columnsToTake.Contains(dataTable.Columns[i].ColumnName))
                    {
                        workSheet.DeleteColumn(i + 1);
                    }
                }

if (!string.IsNullOrEmpty(heading))
                {
                    workSheet.Cells["A1"].Value = heading;
                    workSheet.Cells["A1"].Style.Font.Size = 20;

workSheet.InsertColumn(1, 1);
                    workSheet.InsertRow(1, 1);
                    workSheet.Column(1).Width = 5;
                }

result = package.GetAsByteArray();

}
return result;
}

/// <summary>
        /// 导出Excel
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="data"></param>
        /// <param name="heading"></param>
        /// <param name="isShowSlNo"></param>
        /// <param name="columnsToTake"></param>
        /// <returns></returns>
        public static byte[] ExportExcel<T>(List<T> data, string heading = "", bool isShowSlNo = false, params string[] columnsToTake)
        {
            return ExportExcel(ListToDataTable(data), heading, isShowSlNo, columnsToTake);
        }

}
}

3.获取数据并显示

//数据类

using Models;
using System.Collections.Generic;

namespace BLL
{
    //数据类
    public class StaticDataOfStudent
    {
        public static List<Student> ListStudent => new List<Student>
        {
            new Student {ID = 1, Name = "曹操", Sex = "男", Email = "caocao@163.com", Age = 24},
            new Student {ID = 2, Name = "李易峰", Sex = "女", Email = "lilingjie@sina.com.cn", Age = 24},
            new Student {ID = 3, Name = "张三丰", Sex = "男", Email = "zhangsanfeng@qq.com", Age = 224},
            new Student {ID = 4, Name = "孙权", Sex = "男", Email = "sunquan@163.com", Age = 1224},
        };
    }
}

//用于显示的数据类

using BLL;
using Models;
using System.Collections.Generic;

namespace EPPlusMvcDemo2.Models
{
    public class StudentViewModel
    {
        public List<Student> ListStudent => StaticDataOfStudent.ListStudent;
    }
}

实现部分：

1.控制器

using BLL;
using Common;
using EPPlusMvcDemo2.Models;
using Models;
using System.Collections.Generic;
using System.Web.Mvc;

namespace EPPlusMvcDemo2.Controllers
{
    public class HomeController : Controller
    {
        // GET: Home
        public ActionResult Index()
        {
            StudentViewModel model = new StudentViewModel();
            return View(model);
        }
        //导出
        public FileContentResult ExportToExcel()
        {
            List<Student> lstStudent = StaticDataOfStudent.ListStudent;
            string[] columns = { "ID", "Name", "Age" };
            byte[] filecontent = ExcelExportHelper.ExportExcel(lstStudent, "", false, columns);
            return File(filecontent, ExcelExportHelper.ExcelContentType, "MyStudent.xlsx");
        }
    }
}

2.视图

@model EPPlusMvcDemo2.Models.StudentViewModel@{    ViewBag.Title = "Excel文件导出";}<div class="panel">    <div class="panel-heading">        <a href="@Url.Action("ExportToExcel")" class="btn btn-primary">Export</a>    </div>    <div class="panel-body">        <table class="table table-striped table-bordered">            <thead>            <tr>                <th>ID</th>                <th>Name</th>                <th>Sex</th>                <th>Age</th>                <th>Email</th>            </tr>            </thead>            <tbody>            @foreach (var item in Model.ListStudent)            {                <tr>                    <td>@item.ID</td>                    <td>@item.Name</td>                    <td>@item.Sex</td>                    <td>@item.Age</td>                    <td>@item.Email</td>                </tr>            }            </tbody>        </table>    </div></div>

原文:https://www.cnblogs.com/caofangsheng/p/6149843.html

转载于:https://www.cnblogs.com/zhang1f/p/11093679.html

C# 使用Epplus导出数据到Excel相关推荐

java导出为excel文件_java导出数据到excel文件
有的时候,将一些有用的数据导出到excel是很有必要的.比如说,我现在在做一个学校的在线教学平台,有一个需求是:将学生成绩导出到excel文件中去. 那怎样实现用java导出数据到excel文件呢?? ...
百度指数常见php框架,怎么导出数据到excel表格-如何将百度指数数据导出到Excel表格...
如何将百度指数数据导出到Excel表格第一步:打开CAD.CAD命令行输入"Li"."选择对象"选需要提取坐标的多段线.回车. 第二步:将CAD文本框中的数据 ...
arcengine遍历属性表_【程序之坑】小程序云开发导出数据到excel表
本文解决了小程序云开发导出数据到excel的bug,并给出了分析的过程,同时简化了程序为一个云函数,一个本地函数,逻辑更简单.文章结尾给出了完整源代码小程序云开发为没有服务器的小程序开发者提供了便利 ...
python输出数据到excel-python如何导出数据到excel文件
python导出数据到excel文件的方法: 1.调用Workbook()对象中的add_sheet()方法wb = xlwt.Workbook() ws = wb.add_sheet('A Test ...
python输出数据到excel-Python从数据库导出数据到Excel
#coding=utf-8 import pymysql import xlwt import importlib,sys importlib.reload(sys) # __author__ = ' ...
（转）另一篇：VC导出数据到EXCEL
另一篇:VC导出数据到EXCEL 2010-08-28 17:03:47| 分类: 默认分类 | 标签: |字号大中小订阅我们制作应用软件的时候,经常要把结果以报表的形式输出,当前使用较为广泛 ...
SQLSERVER使用CLR Stored Procedure导出数据到Excel
在实际应用中,我们经常需要导出数据到Excel文件,你可以使用DTS或SSIS来做.但有时,我们并不需要这么重量级的工具,直接用CLR SP实现就可以了. 假设你已经写好了导出Excel的C# cod ...
前端利用JS导出数据到Excel表数字是文本类型无法计算
问题描述:前端利用JS导出数据到Excel表数字是文本类型无法进行公式计算:前端利用JS导出数据到Excel表数字是文本类型无法计算解决办法:参考https://bbs.csdn.net/t ...
spring boot实现导出数据到excel
1.导入依赖;  <!-- https://mvnrepository.com/artifact/org.apache.poi/poi --&g ...

C# 使用Epplus导出数据到Excel

C# 使用Epplus导出数据到Excel相关推荐

最新文章

热门文章