Help with Program.cs

Question

I have 2 forms, one is a "Loading" form and the other is the "main" form.
In Program.cs:
[STAThread]
static void Main()
{
Application.Run(new loadingForm());
//some code here
Application.Run(new mainForm());
}

How come "//some code here" is not ran until loadingForm closes?

Sam Hobbs · Answer

It depends on what the loading form is for. Is it for a splash screen and you want some things (initialization) to happen while the splash screen is showing? You can look for articles and samples about splash screens. There are many solutions for that. Perhaps you can use a thread to do the "some code". You could use a synchronization object for the thread to notify the splash screen that it (the initialization) is done.

Vulpes · Answer

Only by moving it somewhere else such as the FormClosing event handler of formLoading which would fire automatically just before the form closed and could also be cancelled if you needed to do that.

Mark C · Answer

Is it possible to make "//some code here" run when the Loading form is open?

Vulpes · Answer

When you call the Application.Run() method it does two things:- 1. starts a 'message loop' running on the current thread which is the underlying way of communicating between controls in a Windows Forms application; 2. displays the form you pass to it (known as the 'startup' form) on the desktop. Having done that, the Application.Run() method does not then return to the caller until the startup form is closed or Application.Exit() is called. So this is why "//some code here" doesn't run until loadingForm closes.

Ankit Nandekar · Answer

how can u run 2 form at a time.

Help with Program.cs

Answers (5)