Demonstrate GET, POST, PUT, and DELETE with HttpClient

[serpent5]

Fixes #12580.

[serpent5]

@Rick-Anderson Are you happy with this approach? I think I'll skip the System.Net.Http.Json stuff in this PR but cover it later in another change. If you have time, and you're interested, you should be able to run the sample app as is. I know you're busy, so don't worry if you don't have the time or desire. 😄

[Rick-Anderson]

Wow, this is fantastic. We just need to document it must be run from https://localhost:5001 (or you must change the port). I tried to catch the socket exception and return a warning but was unable to. The would probably pollute the clean code anyway.
Good plan. Let me know how I can help.

[serpent5]

@Rick-Anderson Thanks for taking a look. I added a commit that uses the incoming request to determine the correct address to use, so it should work whatever the host/port is.

I'm going to work on getting some content into the topic next. What kind of detail do you think should go into the topic?

[Rick-Anderson]

@serpent5 we don't want a cook-book step by step instructions how you made the code - like what MSDN used to do. Let the code do the talking. Refer to the code and explain how it work.

Does that help?

[serpent5]

Yeah, sure, that makes sense, thanks.

I'll work on adding a new section that focuses on the POST example but also refers the to the PUT and DELETE examples, for completeness. I'm hoping the reader can just spin up the sample and see it all in action, without being cook-booked through it, like you said. I should have it ready by the end of the week, if not a bit earlier.

[serpent5]

@Rick-Anderson Whenever you have time, could you take a look at the changes I made to the topic? Could you also provide a rendered view of the page so I can see what it looks like?

[Rick-Anderson]

To review the doc build

• download https://www.dropbox.com/s/kg7bll4gio6lo74/1.zip?dl=0
• unzip
• view HTML file in FF (Fire Fox). It best to view the doc with the widest window that has no left or right TOC (Table of contents)

[Rick-Anderson]

Awesome!

[serpent5]

@Rick-Anderson I'm getting a 404 on the Dropbox link. If you're happy with how this renders, don't worry about providing a new link.

[Rick-Anderson]

Have a look at the published doc when you have time.