C# 获取文件md5值(用于检测文件完整性)

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;


namespace FileMd5Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            var filePath = "D:\\Projects\\BullSoftProjects\\smarthome\\smarthome_pictureframe\\app\\release\\app-release - 副本.apk";
            var md5 = FileUtil.GetMD5HashFromFile(filePath);
            Console.WriteLine($"文件的md5:{md5}");
            Console.ReadLine();
        }
    }

    public class FileUtil
    {
        public static string GetMD5HashFromFile(string fileName)
        {
            try
            {
                FileStream file = new FileStream(fileName, System.IO.FileMode.Open);
                MD5 md5 = new MD5CryptoServiceProvider();
                byte[] retVal = md5.ComputeHash(file);
                file.Close();
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < retVal.Length; i  )
                {
                    sb.Append(retVal[i].ToString("x2"));
                }
                return sb.ToString();
            }
            catch (Exception ex)
            {
                throw new Exception("GetMD5HashFromFile() fail,error:"   ex.Message);
            }
        }
    }
}