init NLOG by Code

        private static  void InitLogger()
        {
            // Step 1. Create configuration object
            var config = new LoggingConfiguration();
            // Step 2. Create targets and add them to the configuration
            var consoleTarget = new ColoredConsoleTarget();
            config.AddTarget("console", consoleTarget);
            var fileTarget = new FileTarget();
            config.AddTarget("file", fileTarget);
            // Step 3. Set target properties
            consoleTarget.Layout = @"${date:format=HH\:mm\:ss} ${logger} ${message}";
            fileTarget.FileName = "${basedir}/file.txt";
            fileTarget.Layout = "${message}";
            // Step 4. Define rules
            var rule1 = new LoggingRule("*", LogLevel.Debug, consoleTarget);
            config.LoggingRules.Add(rule1);
            var rule2 = new LoggingRule("*", LogLevel.Debug, fileTarget);
            config.LoggingRules.Add(rule2);
            // Step 5. Activate the configuration
            LogManager.Configuration = config;
            LogManager.ReconfigExistingLoggers();
        }