C# 計算檔案的MD5值

標籤：

/// <summary>/// 計算檔案的MD5校正/// </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;    }}

經驗證是正確的，可以和其他軟體計算出來的MD5值對照。

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C# 計算檔案的MD5值