Here is the actual code snippet to parse FB2 format book using C#. FB2 File format is known as FictionBook format. FB2 is rather simple file format based on XML and basic HTML. The FB2 file contains sections. Sections can contain other sections as well as paragraphs. Paragraphs contain actual text and basic formatting. 

The program below loads all sections recursively and print their names to console. Also one can use the fb2verse variable to get the actual text of the paragraph. The approach below uses the XDocument class to get the XElements. The only trick with further parsing is to use the correct XNamespace. 

If you are writing some installer application, want to update system files, apply settings of for some other reason, you may need to shutdown (reboot, power off) a Windows 10 computer. The good news is that Windows has a pretty straightforward API for this intent, which is called ExitWindowsEx. It has only two parameters. The first one is the flags parameter which you can set to either reboot or power-off and the second one - the reboot reason, which is only used on servers and is not mandatory.  But the bad news is that the functions won't work as-is. In order to make it work, you need to enable the shutdown privilege, which is disabled by default. I advise you to enable this privilege only directly before you decide to shut down. 

If you are writing console application in C# and need to use the database connection, probably you would like to store the connection string in the App.config file. This is a common practice for C#.NET applications. But how to read the connection string from the file? See the answer below: 

ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionStringName"].ConnectionString;

Fiddler is a debugging proxy that monitors all web requests between your computer and a remote server and allows to inspect and modify them.

Fiddler can be extended with scripts written in JScript.NET (it's very easy to write them), change the program menu, and in general it is a wonderful tool. You can use it with any browser. In the new version of Fiddler, some features may change, some may be introduced.

When you enter Fiddler, a query window opens on the left and work tabs on the right.

As you can see, there are many options, they barely fit in the image. And, believe me, there are even more opportunities.

Capabilities & Operations on requests in Fiddler
In the requests window on the left, you can view and select requests, view their headers, save them to disk all together or separately.