关于TaskScheduler.FromCurrentSynchronizationContext和Task.Factory.StartNew（）的使用

Question

i am new in MS TPL. so i have seen some time people use TaskScheduler.FromCurrentSynchronizationContext when start any task using Task.Factory.StartNew() and some time TaskScheduler is not use when people start task.

var uiScheduler = TaskScheduler.FromCurrentSynchronizationContext();
            Task.Factory.StartNew(() =>
            {
            });

Task.Factory.StartNew(() =>
            {
            });

so please someone tell me what is the use of TaskScheduler ? when TaskScheduler should use along with Task.Factory.StartNew and when should not use TaskScheduler .

please explain with small sample code for better understand the usage of TaskScheduler .

another question how can we schedule a task like that when we create task how can i specify time or date or day when task need to start. thanks

Answer 1

If you want the given task to run on the UI thread then use the uiScheduler as the given TaskScheduler . If you want the task to run in a thread pool thread, which is the default behavior, don't provide any TaskScheduler , or provide TaskScheduler.Default .