C#基础_C#判断文件是否被打开

1、用文件流判断

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

namespace ConsoleApp1
{
    class Program
    {
        public static bool isFileLocked(string pathName)
        {
            try
            {
                if (!File.Exists(pathName))
                {
                    return false;
                }
                using (var fs = new FileStream(pathName, FileMode.Open, FileAccess.Read, FileShare.None))
                {
                    fs.Close();
                }
            }
            catch
            {
                return true;
            }
            return false;
        }
        static void Main(string[] args)
        {
            string path = @"D:\生产数据\Type1_1.csv";
            if (isFileLocked(path))
            {
                Console.WriteLine("文件被打开");
            }
            else
            {
                Console.WriteLine("文件没有被打开");
            }
            Console.ReadLine();
        }
    }
}