Open a new form on the main thread

Question

How can I open a new form from the main thread in C#?

At this moment I open them by using this:

System.Threading.Thread t = new System.Threading.Thread(new System.Threading.ThreadStart(oppenMainForm));
t.SetApartmentState(ApartmentState.STA);
t.Start();

But this creates a new thread... My main form is my login form.. And I want that to close and then open my second form.

Answer 1

Go to your program.cs file and alter it so that you show your login form and then, after it has been closed, determine if you should open up another form:

It'll likely look something more or less like this:

LoginForm loginform = new LoginForm();
Application.Run(loginform);

if (loginform.DialogResult == DialogResult.Yes)
    Application.Run(new MainForm());
//TODO handle error cases

Answer 2

只是用这个

Application.Run(new OppenMainForm());