DetachedAndAttachedTasks | C# Online Compiler

DetachedAndAttachedTasks by Expeo Tutorials

using System;
using System.Threading;
using System.Threading.Tasks;
					
public class Program
{
	public static void Main()
	{
		//DetachedTask();
		//ParentWaitingForDetachedTask();
		//CreatingAttachedChildTask();
		PreventChildFromAttaching();
	}
	
	private static void DetachedTask() 
	{
		var parentTask = Task.Factory.StartNew(() => {
			Console.WriteLine("Parent task executing");
			
			var childTask = Task.Factory.StartNew(() => {
				Console.WriteLine("Child task executing");
				Thread.SpinWait(500000);
				Console.WriteLine("Child task completed");
			});
		});
		parentTask.Wait();
		Console.WriteLine("Parent task completed");
	}
	
	private static void ParentWaitingForDetachedTask() 
	{
		var parentTask = Task.Factory.StartNew(() => {
			Console.WriteLine("Parent task executing");
			
			var childTask = Task.Factory.StartNew(() => {
				Console.WriteLine("Child task executing");
				Thread.SpinWait(500000);
				Console.WriteLine("Child task completed");
				return "success";
			});
			
			Console.WriteLine(childTask.Result);
		});
		parentTask.Wait();
		Console.WriteLine("Parent task completed");
	}
	
	private static void CreatingAttachedChildTask()
	{
		var parentTask = Task.Factory.StartNew(() => {
			Console.WriteLine("Parent task executing");
			for(int i = 0; i < 10; i++)
			{
				Task.Factory.StartNew((taskNo) => {
					Console.WriteLine($"Attached child task {taskNo}  completed");
				}, i, TaskCreationOptions.AttachedToParent);
			}
		});
		parentTask.Wait();
		Console.WriteLine("Parent task completed");
	}
	
	private static void PreventChildFromAttaching()
	{
		var parentTask = Task.Factory.StartNew(() => {
			Console.WriteLine("Parent task executing");
			for(int i = 0; i < 10; i++)
			{
				Task.Factory.StartNew((taskNo) => {
					Console.WriteLine($"Attached child task {taskNo}  completed");
				}, i, TaskCreationOptions.AttachedToParent);
			}
		}, TaskCreationOptions.DenyChildAttach);
		parentTask.Wait();
		Console.WriteLine("Parent task completed");
	}
}

 
using System;
using System.Threading;
using System.Threading.Tasks;
                    
public class Program
{
    public static void Main()
    {
        //DetachedTask();
        //ParentWaitingForDetachedTask();
        //CreatingAttachedChildTask();
        PreventChildFromAttaching();
    }
    
    private static void DetachedTask() 
    {
        var parentTask = Task.Factory.StartNew(() => {
            Console.WriteLine("Parent task executing");
            
            var childTask = Task.Factory.StartNew(() => {
                Console.WriteLine("Child task executing");
                Thread.SpinWait(500000);
                Console.WriteLine("Child task completed");
            });
        });
        parentTask.Wait();
        Console.WriteLine("Parent task completed");
    }
    
    private static void ParentWaitingForDetachedTask() 
    {
        var parentTask = Task.Factory.StartNew(() => {
            Console.WriteLine("Parent task executing");
            
            var childTask = Task.Factory.StartNew(() => {
                Console.WriteLine("Child task executing");
                Thread.SpinWait(500000);
                Console.WriteLine("Child task completed");
                return "success";
            });
            
            Console.WriteLine(childTask.Result);
        });
        parentTask.Wait();
        Console.WriteLine("Parent task completed");
    }
    
    private static void CreatingAttachedChildTask()
    {
        var parentTask = Task.Factory.StartNew(() => {
            Console.WriteLine("Parent task executing");
            for(int i = 0; i < 10; i++)
            {
                Task.Factory.StartNew((taskNo) => {
                    Console.WriteLine($"Attached child task {taskNo}  completed");
                }, i, TaskCreationOptions.AttachedToParent);
            }
        });
        parentTask.Wait();
        Console.WriteLine("Parent task completed");
    }
    
    private static void PreventChildFromAttaching()
    {
        var parentTask = Task.Factory.StartNew(() => {
            Console.WriteLine("Parent task executing");
            for(int i = 0; i < 10; i++)
            {
                Task.Factory.StartNew((taskNo) => {
                    Console.WriteLine($"Attached child task {taskNo}  completed");
                }, i, TaskCreationOptions.AttachedToParent);
            }
        }, TaskCreationOptions.DenyChildAttach);
        parentTask.Wait();
        Console.WriteLine("Parent task completed");
    }
}

Compilation error (line 7, col 7): The type or namespace name 'MongoDB' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 14, col 16): The type or namespace name 'ITransactionService' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 15, col 16): The type or namespace name 'IMongoCollection<>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 17, col 77): The type or namespace name 'ITransactionService' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 17, col 117): The type or namespace name 'IMongoClient' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 1, col 1): Program does not contain a static 'Main' method suitable for an entry point
Compilation error (line 35, col 24): 'ILogger<TransactionController>' does not contain a definition for 'logdebug' and no accessible extension method 'logdebug' accepting a first argument of type 'ILogger<TransactionController>' could be found (are you missing a using directive or an assembly reference?)

Last Run:	11:06:51 am
Compile:	0.015s
Execute:	0s
Memory:	0b
CPU:	0s

View IL Code