c# 写日志

public void WriteLog(string msg)
{
    string filePath = AppDomain.CurrentDomain.BaseDirectory + "Log";
    if (!Directory.Exists(filePath))
    {
        Directory.CreateDirectory(filePath);
    }
    string logPath = AppDomain.CurrentDomain.BaseDirectory + "Log\\" + DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
    try
    {
        using (StreamWriter sw = File.AppendText(logPath))
        {
            sw.WriteLine("消息：" + msg);
            sw.WriteLine("时间：" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
            sw.WriteLine("**************************************************");
            sw.WriteLine();
            sw.Flush();
            sw.Close();
            sw.Dispose();
        }
    }
    catch (IOException e)
    {
        using (StreamWriter sw = File.AppendText(logPath))
        {
            sw.WriteLine("异常：" + e.Message);
            sw.WriteLine("时间：" + DateTime.Now.ToString("yyy-MM-dd HH:mm:ss"));
            sw.WriteLine("**************************************************");
            sw.WriteLine();
            sw.Flush();
            sw.Close();
            sw.Dispose();
        }
    }
}