C# Forms and Threading

[twisterplus]

I have developed a multi form application in C#!
I do not start them in different threads. I simply create new forms like this:

this.Form= new Form1();
this.Form.Show();
 

How ever these forms act like they run in two different threads! They are both active and can perform actions!
I have checked my task manager. No matter how many forms I start, the number of threads is still the same!

I was wondering what is happening underneath.

Anyone can shed any light on this issue?

Thanks

[Christian Binder]

This is standard, that you can have many form open, which all accept input and don't block each other.
If you show a form with this.Form.ShowDialog() you can only do input action on this modal form.