Task and Task of T types in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a Task that runs a method asynchronously.

C Sharp (C#)

Task myTask = Task.[1](() => Console.WriteLine("Hello from Task"));

Drag options to blanks, or click blank then click option'

AStart

BRun

CExecute

DBegin

Attempts:

3 left

💡 Hint

Common Mistakes

Using Task.Start directly on a delegate instead of creating a Task first.

Confusing Task.Run with Task.Factory.StartNew.

The Task.Run method is used to start a task that runs asynchronously.

2fill in blank

medium

Complete the code to create a Task that returns an integer result asynchronously.

C Sharp (C#)

Task<int> myTask = Task.[1](() => 42);

Drag options to blanks, or click blank then click option'

ARun

BStart

CExecute

DBegin

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to use Task.Start with a lambda directly.

Using Task.Factory.StartNew without specifying the return type.

Task.Run can be used with a lambda that returns a value, creating a Task<T>.

3fill in blank

hard

Fix the error in the code to await a Task that returns a string.

C Sharp (C#)

async Task<string> GetMessageAsync() {
    return await [1];
}

Task<string> messageTask = Task.FromResult("Hello");

Drag options to blanks, or click blank then click option'

AmessageTask.Result

BmessageTask.GetAwaiter()

CmessageTask

DmessageTask.Wait()

Attempts:

3 left

💡 Hint

Common Mistakes

Awaiting the Result property instead of the Task.

Calling Wait() which blocks instead of awaiting.

You should await the Task itself, not its Result property or Wait method.

4fill in blank

hard

Fill both blanks to create and start a Task that returns the length of a string.

C Sharp (C#)

Task<int> lengthTask = new Task<int>(() => [1].Length);
lengthTask.[2]();

Drag options to blanks, or click blank then click option'

AinputString

BStart

CRun

DExecute

Attempts:

3 left

💡 Hint

Common Mistakes

Using Task.Run instead of new Task and Start.

Forgetting to start the Task after creating it.

You create a Task with a lambda using inputString.Length and start it with Start().

5fill in blank

hard

Fill all three blanks to create a Task that returns the uppercase version of a string and start it.

C Sharp (C#)

Task<string> upperTask = new Task<string>(() => [1].[2]());
upperTask.[3]();

Drag options to blanks, or click blank then click option'

Ainput

BToUpper

CStart

DRun

Attempts:

3 left

💡 Hint

Common Mistakes

Using Task.Run instead of new Task and Start.

Calling the method without parentheses.

Not starting the Task.

The Task uses input.ToUpper() in the lambda and is started with Start().