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Add notes for ConfigureAwait. #61

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@aholmes aholmes commented Mar 12, 2020

Filled out the TBD under ConfigureAwait. Tried to stick to the formatting, verbiage, and style of the rest of the article. Added examples from ASP.NET Framework.

@vchirikov
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asp.net core doesn't have SynchronizationContext

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aholmes commented Mar 15, 2020

@vchirikov indeed! I addressed this on line 612 of the first commit (609 of the final PR).

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I mean it's very strange to mix up info about asp.net and asp.net core in repository with name AspNetCoreDiagnosticScenarios .

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aholmes commented Mar 15, 2020

Fair point. I'll think about revising so it's more relevant.

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Also you can include useful info from Stephen Toub


:bulb:**NOTE Some advice states to use `ContinueAwait(false)` to avoid deadlocks. This is mistaken advice and does [not guarantee against deadlocks](https://blog.stephencleary.com/2012/07/dont-block-on-async-code.html).**

❌ **BAD** This example uses a global object and throws a `NullReferenceException` during runtime.
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I think we should remove the ASP.NET examples (non core) as there's nothing else in this article that tries to explain that.

public async Task<string> Get(int id)
{
HttpResponseMessage result;
using(var client = new HttpClient())
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Suggested change
using(var client = new HttpClient())
using (var client = new HttpClient())

var username = HttpContext.Current.Session["username"];

HttpResponseMessage result;
using(var client = new HttpClient())
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Suggested change
using(var client = new HttpClient())
using (var client = new HttpClient())

public async Task<string> Get(int id)
{
HttpResponseMessage result;
using(var client = new HttpClient())
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Suggested change
using(var client = new HttpClient())
using (var client = new HttpClient())


return $"{username}, your requested content is {content}";
}
```
# Scenarios
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# Scenarios
# Scenarios

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4 participants