C#日志简单框架及实际测试

1、目的
实现日志简单框架并测试。
2、实现
（1）、编写日志基本类

/// 

    /// 定义日志输出目标类型
    /// 
    public enum LogTarget
    {
        File,       //文件中
        Database,   //数据库中
        EventLog    //Windows日志中
    }
    /// 

    /// 定义日志基类
    /// 
    public abstract class LogBase
    {
        protected readonly object lockObject = new object();
        public abstract void Log(string message);
    }
    /// 

    /// 输出文件日志
    /// 
    public class FileLogger : LogBase
    {
        private string filePath = Path.Combine(Environment.CurrentDirectory, "fileLog.txt");
        public override void Log(string message)
        {
            lock (lockObject)
            {
                using (StreamWriter streamWriter = new StreamWriter(filePath,true))
                {
                    streamWriter.WriteLine(message);
                    streamWriter.Close();
                }
            } 
        }
    }
    /// 

    /// 输出数据库日志
    /// 
    public class DatabaseLogger : LogBase
    {
        string connectionString = string.Empty;
        public override void Log(string message)
        {
            lock (lockObject)
            {
                //Code to log data to database
            }
        }
    }
    /// 

    /// 输出Windows日志
    /// 
    public class EventLogger : LogBase
    {
        public override void Log(string message)
        {
            lock (lockObject)
            {
                EventLog eventLog = new EventLog("");
                eventLog.Source = "IDGEventLog";
                eventLog.WriteEntry(message);
            }
        }
    }
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（2）、编写业务封装类LogHelper

private static LogBase logger = null;
        public static void Log(LogTarget target,string message)
        {
            switch (target)
            {
                case LogTarget.File:
                    logger = new FileLogger();
                    logger.Log(message);
                    break;
                case LogTarget.Database:
                    logger = new DatabaseLogger();
                    logger.Log(message);
                    break;
                case LogTarget.EventLog:
                    logger = new EventLogger();
                    logger.Log(message);
                    break;
                default:
                    return;
            }
        }
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（3）、在窗体程序中调用

private void button1_Click(object sender, EventArgs e)
        {
            LogHelper.Log(LogTarget.File, DateTime.Now + ": click Button1, textBox1.Text is:" + this.textBox1.Text);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            LogHelper.Log(LogTarget.File, DateTime.Now + ": click Button2, textBox2.Text is:" + this.textBox2.Text);
        }
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3、运行效果