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using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication6 { public class Program { public static void Main(string[] args) { string fileName = @"D:\说明.txt"; string result = GetMD5HashFromFile(fileName); } // <summary> /// 计算文件的MD5校验 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public static string GetMD5HashFromFile(string fileName) { try { FileStream file = new FileStream(fileName, FileMode.Open); System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.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); } } } }
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