Why is the console window closing immediately once displayed my output?

Question

I\'m studying C# by following the guides in MSDN.

Now, I just tried the Example 1 (here is the link to MSDN), and I\'ve encountered an i

Answer 1

this is the answer async at console app in C#?

anything whereever in the console app never use await but instead use theAsyncMethod().GetAwaiter().GetResult();,

example

var result = await HttpClientInstance.SendAsync(message);

becomes

var result = HttpClientInstance.SendAsync(message).GetAwaiter().GetResult();