Validate

public static bool Validate(string passwordHash, string saltHash, string enteredPassword)
{
     byte[] _password = System.Text.Encoding.UTF8.GetBytes(enteredPassword);
     Rfc2898DeriveBytes keyEntered = new Rfc2898DeriveBytes(_password, Convert.FromBase64String(saltHash), 10000);           
     return Convert.ToBase64String(keyEntered.GetBytes(24)) == passwordHash;
}