使用NetValidatePasswordPolicy根据以前散列过的密码验证密码

根据Microsoft文档NetValidatePasswordPolicy有可能实现检查密码历史记录和避免重复使用以前密码的功能。我已经看过了这个API的所有例子，但没有一个提供了如何检查密码历史的功能。有人能指导我如何验证密码历史记录吗？

    public static NET_API_STATUS ValidatePassword(string password)
    {
        var outputArgs = new NET_VALIDATE_OUTPUT_ARG();
        var inputArgs = new NET_VALIDATE_PASSWORD_CHANGE_INPUT_ARG();
        var passwordHistory = new NET_VALIDATE_PASSWORD_HASH();
        IntPtr inputPointer = IntPtr.Zero;
        IntPtr outputPointer = IntPtr.Zero;
        try
        {
            inputArgs.PasswordMatched = true;
            inputArgs.ClearPassword = Marshal.StringToBSTR(password);
            //var serverName = System.Environment.MachineName;
            string userNameToCheck = @"usr";
            //inputArgs.ClearPassword = Marshal.StringToBSTR(password);
            inputArgs.UserAccountName = userNameToCheck;
            // If using a secure string
            ////inputArgs.ClearPassword = Marshal.SecureStringToBSTR(secureStringPassword);
            inputPointer = Marshal.AllocHGlobal(Marshal.SizeOf(inputArgs));
            Marshal.StructureToPtr(inputArgs, inputPointer, false);
            NET_API_STATUS status = NetValidatePasswordPolicy("serverdc1", IntPtr.Zero, NET_VALIDATE_PASSWORD_TYPE.NetValidatePasswordChange, inputPointer, ref outputPointer);
            if (status == NET_API_STATUS.NERR_Success)
            {
                outputArgs = (NET_VALIDATE_OUTPUT_ARG)Marshal.PtrToStructure(outputPointer, typeof(NET_VALIDATE_OUTPUT_ARG));
                NET_VALIDATE_PASSWORD_HASH OutPasswordHistory = new NET_VALIDATE_PASSWORD_HASH();
                OutPasswordHistory.Hash = outputArgs.ChangedPersistedFields.PasswordHistory;
                OutPasswordHistory.Length = outputArgs.ChangedPersistedFields.PasswordHistoryLength;
                // Copy the Structure to the IntPtr
                if (outputArgs.ValidationStatus == NET_API_STATUS.NERR_Success)
                {
                    // Ok
                    string emtp;
                }
                return outputArgs.ValidationStatus;
            }
            else
            {
                return status;
            }
        }