如何在运行时添加log4net追加程序? [英] How to add log4net appender in runtime?

问题描述

如何在运行时添加额外的日志附加程序? (所有先前存在的附加程序都必须继续工作)
我正在尝试这种方式:

How do I add an extra log appender in runtime? (all pre-existing appenders must keep on working)
I'm trying it this way:

        var layout = new PatternLayout("%utcdate %-5level - %message%newline");
        layout.ActivateOptions();
        _log4netAppender = new FileAppender
            {
                Layout = layout,
                File = logFilePath,
            };
        _log4netAppender.ActivateOptions();
        BasicConfigurator.Configure(_log4netAppender);

但它不会向文件中写入任何内容.

but it doesn't write anything to the file.

推荐答案

您还应该将附加器添加到记录器中. 在这里查看以编程方式添加Appender

You should also add the appender to a logger. Take a look here Adding Appenders programmatically

例如，如果您使用的记录器是ILog logger，请执行以下操作:

If the logger you are using is, for example ILog logger do:

((log4net.Repository.Hierarchy.Logger)logger.Logger).AddAppender(appender)

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