C# Log日志工具类

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

public class Log
{
    private string logFile;
    private StreamWriter writer;
    private FileStream fileStream = null;

    public Log(string fileName)
    {
        logFile = fileName;
        CreateDirectory(logFile);
    }
    //使用
    //Log log = new Log(AppDomain.CurrentDomain.BaseDirectory + @"/log/Log.txt");
    //log.log(basePath);
    public void log(string info)
    {
        try
        {
            System.IO.FileInfo fileInfo = new System.IO.FileInfo(logFile);
            if (!fileInfo.Exists)
            {
                fileStream = fileInfo.Create();
                writer = new StreamWriter(fileStream);
            }
            else
            {
                fileStream = fileInfo.Open(FileMode.Append, FileAccess.Write);
                writer = new StreamWriter(fileStream);
            }
            writer.WriteLine(DateTime.Now + ": " + info);
            writer.WriteLine("----------------------------------");
        }
        finally
        {
            if (writer != null)
            {
                writer.Close();
                writer.Dispose();
                fileStream.Close();
                fileStream.Dispose();
            }
        }
    }

    public void CreateDirectory(string infoPath)
    {
        DirectoryInfo directoryInfo = Directory.GetParent(infoPath);
        if (!directoryInfo.Exists)
        {
            directoryInfo.Create();
        }
    }
}