Threading in C# : use different threads for opening different forms of application

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.NET3.5

Hi All,
I have 1 TaskTray Application which opens/ calls different forms depending upon the contextmenu. I have 1 form which does some DB related task which takes time during this time I can't open other forms for which I want to implement Threading (which I don't know much about :)).
can anyone help me out?

Thanks,

What I have tried:

I have done some google regarding this but all having calls from Main form which in my case is a class which inherits ApplicationContext.

Posted 17-Jul-16 20:55pm

javedsmart

Updated 18-Jul-16 22:16pm

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Michael_Davies 18-Jul-16 3:10am

There are many articles on threading on this site, just put "threading forms" in the search box top right, have a go and ask a question if you get stuck.

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RickZeeland · Answer 1 · 2016-07-17T22:09:00

I would recommend reading this article: .Net Threading You Need To Know.[^]
If you use a newer .NET version, you can also use Tasks, I think Task.ContinueWith() and Task.IsCompleted might be of interest to you.
Example:

C#

// Wait on a single task with a timeout specified.
Task taskA = Task.Run( () => Thread.Sleep(2000));
try {
  taskA.Wait(1000);       // Wait for 1 second.
  bool completed = taskA.IsCompleted;
  Console.WriteLine("Task A completed: {0}, Status: {1}",
                   completed, taskA.Status);
  if (! completed)
     Console.WriteLine("Timed out before task A completed.");
 }
 catch (AggregateException) {
    Console.WriteLine("Exception in taskA.");
 }

Warning: if you want to change controls in another Form from a thread or task you need to use InvokeRequired, or your code will not be thread safe !

Mithlesh Shaw · Answer 2 · 2016-07-18T00:42:00

Solution 3

Try this:

C#

new Thread(() => new TestForm().Show()).Start();

Posted 18-Jul-16 0:42am

Mithlesh Shaw

Anton Burdin · Answer 3 · 2016-07-18T22:16:00

If you need just run some action
use this

C#

Task.Factory.StartNew(() => Thread.Sleep(1000));

if you need run some action and then call some message in UI thread

C#

Task.Factory.StartNew(() => Thread.Sleep(1000)).ContinueWith(t => MessageBox.Show("Task complite"), TaskScheduler.FromCurrentSynchronizationContext());

Threading in C# : use different threads for opening different forms of application

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