C# - Multi-Threading

Question

I've written this code in C#:

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Program re = new Program(); re.actual(); } public void actual() { Thread input = new Thread(input_m); Thread timing = new Thread(timing_m); input.Start(); timing.Start(); } public void input_m() { Console.WriteLine("Choose a number from 1-10 (You have 10 seconds): "); Console.ReadKey(); } public void timing_m() { System.Threading.Thread.Sleep(10000); input.Abort(); Console.Clear(); Console.WriteLine("Time's up!"); Console.ReadKey(); } } }

Now, I get this error:

Error 1 The name 'input' does not exist in the current context

It says that about the "input.Abort();" line.

Can I somehow terminate this thread from another methods (not from where it was created)?

I don't want to make them static by the way, so please don't suggest that.

Thread.Abort() is really really bad...

Chris
– Chris

2013-10-10 15:42:59 +00:00
Commented Oct 10, 2013 at 15:42 — Chris
– Chris, Commented Oct 10, 2013 at 15:42

Knaģis · Accepted Answer · 2013-10-10 15:41:04Z

3

You need to use a class field instead of a local variable.

class Program { private Thread input; public void actual() { this.input = new Thread(input_m); //... } }

Unrelated to the problem itself, you should not use multiple threads and forcibly abort the one that reads from the console. Instead you should use a combination of Sleep and Console.KeyAvailable property.

answered Oct 10, 2013 at 15:41

Knaģis

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3 Comments

BlueRay101 Over a year ago

Thank you very much. I'm interested in learning more regarding the "this" and class fields subject. Where can I learn more about class fields and how to use them?

BlueRay101 Over a year ago

And also, is a thread considered a local variable if declared in a method?

Knaģis Over a year ago

anything that you define in a method in form SomeType variable = something(); is considered a local variable.

Anirudha · Accepted Answer · 2013-10-10 15:47:42Z

1

It should be

 public void actual() { Thread input = new Thread(input_m); if(input.Join(TimeSpan.FromSeconds(10))) //input complete else //timeout }

answered Oct 10, 2013 at 15:47

Anirudha

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1 Comment

BlueRay101 Over a year ago

Thank you, but I prefer the way that Knagis suggested, since it gives me more general control over the thread.

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