Continuation with child tasks

Chapter11/09 - Continuation With Child Tasks/.vscode/launch.json

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+{
+   // Use IntelliSense to find out which attributes exist for C# debugging
+   // Use hover for the description of the existing attributes
+   // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+   "version": "0.2.0",
+   "configurations": [
+        {
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/bin/Debug/netcoreapp2.1/TaskSample.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            // For more information about the 'console' field, see https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md#console-terminal-window
+            "console": "internalConsole",
+            "stopAtEntry": false,
+            "internalConsoleOptions": "openOnSessionStart"
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ,]
+}

Chapter11/09 - Continuation With Child Tasks/.vscode/tasks.json

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+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/TaskSample.csproj"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

Chapter11/09 - Continuation With Child Tasks/Program.cs

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+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace TaskSample
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            var client = new HttpClient();
+            var bag = new ConcurrentBag<string>();
+            var task = Task.Factory.StartNew(() =>
+            {
+                Task.Factory.StartNew(() =>
+                {
+                    bag.Add(client.GetStringAsync("https://www.packtpub.com").Result);
+                }, TaskCreationOptions.AttachedToParent);
+                Task.Factory.StartNew(() =>
+                {
+                    bag.Add(client.GetStringAsync("https://www.amazon.com").Result);
+                }, TaskCreationOptions.AttachedToParent);
+                Task.Factory.StartNew(() =>
+                {
+                    bag.Add(client.GetStringAsync("https://www.microhsoft.com").Result);
+                }, TaskCreationOptions.AttachedToParent);
+            }
+            );
+            var success = task.ContinueWith(prior => Console.WriteLine($"Success! {bag.Count}"),
+                TaskContinuationOptions.NotOnFaulted);
+            var error = task.ContinueWith(prior =>
+            {
+                var ex = prior.Exception;
+                Console.WriteLine("Error on fetch!");
+            }, TaskContinuationOptions.OnlyOnFaulted);
+            Console.Read();
+        }
+    }
+}

Chapter11/09 - Continuation With Child Tasks/TaskSample.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <LangVersion>latest</LangVersion>
+  </PropertyGroup>
+
+</Project>