The name 'Tasks' does not exists in current context

Question

Following script to play a sound. Sound length 6 seconds which plays repeating for 6 seconds

Task.Factory.StartNew<int>(() =>
{
    while (isSoundOn)
    {
        player.Play();
        Thread.Sleep(6000);
    }
    return 1;
 });

Everything is working fine for .Net Framework 4 but I have need to build for .Net Framework 3.

When I use .Net Framework 3 then it shows following error

The name 'Tasks' does not exists in current context

What will be the solution. Thanks in advance.

Answer 1

I am adding this because I lost some time searching for this.... All I had to add was the following...

using System.Threading.Tasks;

Answer 2

Task.Factory was only introduced in .NET Framework 4 - So you'll need to write something like this:

var thread = new Thread(() =>
{
    while (isSoundOn)
    {
        player.Play();
        Thread.Sleep(6000);
    }
});
thread.Start();
thread.Join();

Though it really depends what you're actually doing. It's possible you may not even need threads, and simply write:

while (isSoundOn)
{
    player.Play();
    Thread.Sleep(6000);
}

Answer 3

Task Parallel Library introduced as part of .Net Framework 4.

You can use Thread instead.

new Thread(() =>
{
    while (isSoundOn)
    {
        player.Play();
        Thread.Sleep(6000);
    }    

}).Start();