How do i open a new form in C#, with the thread or task.
example:
public void openform()
{
Form _form = new Form();
_form.show()
}
Thread _thread = new Thread(openform);
_thread.start();
if i use a Thread it opens the form and close it again.
You can create another UI thread if you simply set the ApartmentState to STA and start another message loop:
Thread _thread = new Thread(() =>
{
Application.Run(new Form());
});
_thread.SetApartmentState(ApartmentState.STA);
_thread.Start();
Note that you wont't be able to display a control that you create on the main thread on this form though. That's why it is generally a bad idea to create more than one UI thread.
Thread thd = new Thread(() =>
{
//Do Some stuff
//Do some more stuff
var dispatcher = Dispatcher.CurrentDispatcher;
dispatcher.UnhandledException += Dispatcher_UnhandledException; //you exception handling logic
Dispatcher.Run();
});
thd.IsBackground = true;
thd.SetApartmentState(ApartmentState.STA);
thd.Start();
based on your use case call Dispacther.InvokeShutdown(); when done.
By using ShowDialog it return only when the window is closed:
new Thread(() => new MyForm().ShowDialog()).Start();