C#

public static string MD5Hash(string filename)
{
    System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();

    using (Stream stream = new FileStream(filename, FileMode.Open, FileAccess.Read))
    {
        return BitConverter.ToString(md5.ComputeHash(stream)).Replace("-", "");
    }    
}

MD5CryptoServiceProvider p=new MD5CryptoServiceProvider();
using (FileStream stream=new FileStream(filename, FileMode.Open, FileAccess.Read)) {
    byte[] hash=p.ComputeHash(stream);
    ...
}

stancrm wrote:

You must also encrypt your connection string before write it to a file.
You don't want anybody to know your database password, do you

dev sheoran wrote:

(It means there is no problem with code)