LogNetSingle 构造函数

实例化一个单文件日志的对象，如果日志的路径为空，那么就不存储数据，只触发BeforeSaveToFile事件
Instantiate a single file log object. If the log path is empty, then no data is stored and only the BeforeSaveToFile event is triggered.

public LogNetSingle(
	string filePath
)

Public Sub New ( 
	filePath As String
)

public:
LogNetSingle(
	String^ filePath
)

new : 
        filePath : string -> LogNetSingle