blocks|key|2668131|text|Step1:使用Nuget获取log4net包：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2668132|​|2668133|📷|atomic|offset|length|2668134|2668135|Step2:通过在Application_Start()下的Global.asax.cs文件中添加此调用，告诉log4net从XML+configuration+(Web.config)初始化自身|style|CODE|2668136|log4net.Config.XmlConfigurator.Configure();|code-block|syntax|javascript|2668137|2668138|2668139|Step3:在Web.config的tag+<configSections>...</configSections>之间添加配置节|2668140|++<section+name="log4net"+type="log4net.Config.Log4NetConfigurationSectionHandler,+log4net"+/>|2668141|2668142|2668143|2668144|Step4:插入实际的log4net配置<log4net>...</log4net>+(在<configuration>...</configuration>内，但在</configSections>标签之后)，更多示例请参见Apache+log4net™+Config+Examples：|2668145|<log4net+debug="true">
++++<appender+name="RollingLogFileAppender"+type="log4net.Appender.RollingFileAppender">
++++++<file+value="logs\log.txt"+/>
++++++<appendToFile+value="true"+/>
++++++<rollingStyle+value="Size"+/>
++++++<maxSizeRollBackups+value="10"+/>
++++++<maximumFileSize+value="100KB"+/>
++++++<staticLogFileName+value="true"+/>
++++++<layout+type="log4net.Layout.PatternLayout">
++++++++<conversionPattern+value="%25-5p+%25d+%255rms+%25-22.22c{1}+%25-18.18M+-+%25m%25n"+/>
++++++</layout>
++++</appender>
++++<root>
++++++<level+value="DEBUG"+/>
++++++<appender-ref+ref="RollingLogFileAppender"+/>
++++</root>
++</log4net>|2668146|2668147|2668148|2668149|现在，您可以调用ILog将实际的日志语句写入已配置的附加器：|2668150|ILog+log+=+log4net.LogManager.GetLogger(typeof(HomeController));++++++

public+ActionResult+Index()
{
++++log.Debug("Debug+message");
++++log.Warn("Warn+message");
++++log.Error("Error+message");
++++log.Fatal("Fatal+message");
++++ViewBag.Title+=+"Home+Page";
++++return+View();
}|2668151|2668152|2668153|2668154|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/84f7384c94d2f800bff9d1701b8560b4.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/69224313d22b59e229d701cffd865d50.png|2|https://ask.qcloudimg.com/http-save/yehe-900000/1ec8e95bfad1a5fc015cb17f3ba16ccd.png|3|LINK|MUTABLE|url|https://logging.apache.org/log4net/release/config-examples.html|4|https://ask.qcloudimg.com/http-save/yehe-900000/6e13f1beb555d3b36b8b3e649230ec34.png|5|https://ask.qcloudimg.com/http-save/yehe-900000/e8777de7da1ab0c4a98c6ec7fef79887.png^0|0|0|0|1|0|0|0|9|J|U|E|0|0|0|0|1|1|0|M|10|0|0|0|0|1|2|0|0|K|M|19|Y|2B|H|35|V|3|0|0|0|0|1|4|0|0|8|4|0|0|0|0|1|5|0|0^^$0|@$1|2|3|4|5|6|7|21|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|22|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|23|8|@]|9|@$G|24|H|25|1|26]]|A|$]]|$1|I|3|C|5|6|7|27|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|28|8|@$G|29|H|2A|L|M]|$G|2B|H|2C|L|M]]|9|@]|A|$]]|$1|N|3|O|5|P|7|2D|8|@]|9|@]|A|$Q|R]]|$1|S|3|C|5|6|7|2E|8|@]|9|@]|A|$]]|$1|T|3|E|5|F|7|2F|8|@]|9|@$G|2G|H|2H|1|2I]]|A|$]]|$1|U|3|V|5|6|7|2J|8|@$G|2K|H|2L|L|M]]|9|@]|A|$]]|$1|W|3|X|5|P|7|2M|8|@]|9|@]|A|$Q|R]]|$1|Y|3|C|5|6|7|2N|8|@]|9|@]|A|$]]|$1|Z|3|E|5|F|7|2O|8|@]|9|@$G|2P|H|2Q|1|2R]]|A|$]]|$1|10|3|C|5|6|7|2S|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|2T|8|@$G|2U|H|2V|L|M]|$G|2W|H|2X|L|M]|$G|2Y|H|2Z|L|M]]|9|@$G|30|H|31|1|32]]|A|$]]|$1|13|3|14|5|P|7|33|8|@]|9|@]|A|$Q|R]]|$1|15|3|C|5|6|7|34|8|@]|9|@]|A|$]]|$1|16|3|E|5|F|7|35|8|@]|9|@$G|36|H|37|1|38]]|A|$]]|$1|17|3|C|5|6|7|39|8|@]|9|@]|A|$]]|$1|18|3|19|5|6|7|3A|8|@$G|3B|H|3C|L|M]]|9|@]|A|$]]|$1|1A|3|1B|5|P|7|3D|8|@]|9|@]|A|$Q|R]]|$1|1C|3|C|5|6|7|3E|8|@]|9|@]|A|$]]|$1|1D|3|E|5|F|7|3F|8|@]|9|@$G|3G|H|3H|1|3I]]|A|$]]|$1|1E|3|C|5|6|7|3J|8|@]|9|@]|A|$]]|$1|1F|3|-4|5|6|7|3K|8|@]|9|@]|A|$]]]|1G|$1H|$5|1I|1J|1K|A|$1L|1M|1N|-4]]|1O|$5|1I|1J|1K|A|$1L|1P|1N|-4]]|1Q|$5|1I|1J|1K|A|$1L|1R|1N|-4]]|1S|$5|1T|1J|1U|A|$1V|1W]]|1X|$5|1I|1J|1K|A|$1L|1Y|1N|-4]]|1Z|$5|1I|1J|1K|A|$1L|20|1N|-4]]]]

Step1: To use the Nuget to get the log4net package:

<a href="https://i.stack.imgur.com/lXEOR.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lXEOR.png" alt="enter image description here"></a>

Step2: tell log4net to initialize itself from the XML configuration (Web.config), by adding this call in the <code>Global.asax.cs</code> file under <code>Application_Start()</code>:

<pre><code>log4net.Config.XmlConfigurator.Configure();
</code></pre>

<a href="https://i.stack.imgur.com/mTRcP.png" rel="noreferrer"><img src="https://i.stack.imgur.com/mTRcP.png" alt="enter image description here"></a> 

Step3: add the configuration section in Web.config between tag <code>&lt;configSections&gt;...&lt;/configSections&gt;</code>:

<pre><code> &lt;section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /&gt;
</code></pre>

<a href="https://i.stack.imgur.com/1AzoY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/1AzoY.png" alt="enter image description here"></a>

Step4: Insert the actual log4net configuration <code>&lt;log4net&gt;...&lt;/log4net&gt;</code> (Within <code>&lt;configuration&gt;...&lt;/configuration&gt;</code> but after the <code>&lt;/configSections&gt;</code> tag) , see <a href="https://logging.apache.org/log4net/release/config-examples.html" rel="noreferrer">Apache log4net™ Config Examples</a> for more examples:

<pre><code>&lt;log4net debug="true"&gt;
 &lt;appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender"&gt;
 &lt;file value="logs\log.txt" /&gt;
 &lt;appendToFile value="true" /&gt;
 &lt;rollingStyle value="Size" /&gt;
 &lt;maxSizeRollBackups value="10" /&gt;
 &lt;maximumFileSize value="100KB" /&gt;
 &lt;staticLogFileName value="true" /&gt;
 &lt;layout type="log4net.Layout.PatternLayout"&gt;
 &lt;conversionPattern value="%-5p %d %5rms %-22.22c{1} %-18.18M - %m%n" /&gt;
 &lt;/layout&gt;
 &lt;/appender&gt;
 &lt;root&gt;
 &lt;level value="DEBUG" /&gt;
 &lt;appender-ref ref="RollingLogFileAppender" /&gt;
 &lt;/root&gt;
 &lt;/log4net&gt;
</code></pre>

<a href="https://i.stack.imgur.com/G153L.png" rel="noreferrer"><img src="https://i.stack.imgur.com/G153L.png" alt="enter image description here"></a>

Now you're ready to make calls to an <code>ILog</code> to write actual log statements to the configured appender(s): 

<pre><code>ILog log = log4net.LogManager.GetLogger(typeof(HomeController)); 

public ActionResult Index()
{
 log.Debug("Debug message");
 log.Warn("Warn message");
 log.Error("Error message");
 log.Fatal("Fatal message");
 ViewBag.Title = "Home Page";
 return View();
}
</code></pre>

<a href="https://i.stack.imgur.com/x8zyg.png" rel="noreferrer"><img src="https://i.stack.imgur.com/x8zyg.png" alt="enter image description here"></a>

I want to record software process logs to files. Rather than make my own log system, I am trying to use Log4Net with ASP.NET MVC, but I have run into problems setting it up in Visual Studio 2015, like:

<ol>
<li>How to setup web.config / Global.asax page?</li>
<li>How to install components in VS 2012 ~?</li>
<li>How to use it in my <code>*.cs</code> file?</li>
</ol>

What are the steps to properly configure Log4Net With ASP.NET MVC C# in Visual Studio 2015?

I also wrote a Q&amp;A to set it up for ASP.NET WebForms,
 see <a href="https://stackoverflow.com/questions/42569713/how-to-use-log4net-from-nuget-with-visual-studio-platform-in-the-asp-net-web-for">How to use Log4net from Nuget with Visual Studio platform in the ASP.NET Web Form (Easy method)</a>.

How to configure or setup Log4Net with ASP.NET ( included MVC) C# on Visual Studio 2012 ~ ~

Visual Studio

我想要将软件过程日志记录到文件中。我没有创建自己的日志系统，而是尝试在ASP.NET MVC中使用Log4Net，但在Visual Studio2015中设置它时遇到了问题，例如：如何设置web.config / Global.asax页面？如何在VS 2012中安装组件~？如何在*.cs文件中使用它？在Visual ...

问如何在Visual Studio2012上使用ASP.NET (包括MVC) C#配置或设置Log4Net ~~
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