コピー機能の追加-6
https://github.com/RickStrahl/highlightjs-badge

外国のコード。素晴らしい！

Single line code snippet

public static string GetChecksumFromFile(string file)
{
    if (!File.Exists(file))
        return null;

    try
    {
        byte[] checkSum;
        using (FileStream stream = File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read))
        {
            var md = new MD5CryptoServiceProvider();
            checkSum = md.ComputeHash(stream);
        }

        return StringUtils.BinaryToBinHex(checkSum);
    }
    catch
    {
        return null;
    }
}