log4.net动态修改存储路径位置（备忘）

/// <summary>
/// 改变默认的日志位置
/// </summary>
/// <param name="folder"></param>
public static void UpdateFolder(string folder)
{
var storedPath = LogManager.GetRepository();
var appenders = storedPath.GetAppenders();
//var targetFolder = appenders.First(m => m.Name.Equals("InfoAppender")) as RollingFileAppender;//如果是要指定改某个appender,则在这里指定appender
//targetFolder.File = folder;

//一般多种日志目录是写在一起
if (appenders == null) return;
foreach (var app in appenders)
{
if (app.Name.Equals("ErrorAppender") || app.Name.Equals("InfoAppender"))
{
var ra = app as RollingFileAppender;
ra.File = folder;
ra.ActivateOptions();
}
}
}