C#读取Excel文件的简单方法

一、简述

　　本文讲C#通过第三方库读取Excel的最简单的方法，下文给一个读取行数的例子。

二、依赖

　　引入nuget.org包如下：

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="ExcelDataReader" version="3.4.2" targetFramework="net45" />
</packages>

二、打开xlsx文件并读取行数

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ExcelLineReader
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Please Input Folder Path:");
            var folder = Console.ReadLine();
            var excels = Directory.GetFiles(folder, "*.xlsx", SearchOption.AllDirectories);
            long totalRow = 0;
            foreach (var xlsx in excels)
            {
                using (Stream stream = File.OpenRead(xlsx))
                {
                    var reader = ExcelDataReader.ExcelReaderFactory.CreateOpenXmlReader(stream);
                    var rowCount = reader.RowCount - 1;
                    Console.WriteLine($"File:{xlsx} Count:{rowCount}");
                    totalRow += rowCount;
                    reader.Close();
                }
            }
            Console.WriteLine("All files Count:" + excels.Length + " All Lines:" + totalRow);
            Console.WriteLine("Press Enter to Exit.");
            Console.ReadKey();
        }
    }
}