Question

I have a winforms application in which I am using 2 Forms to display all the necessary controls. The first Form is a splash screen in which it tells the user that it it loading etc. So I am using the following code:

Application.Run( new SplashForm() ); 

Once the application has completed loading I want the SplashForm to hide or me sent to the back and the main from to be show. I am currently using the following:

private void showMainForm() {     this.Hide();     this.SendToBack();      // Show the GUI     mainForm.Show();     mainForm.BringToFront(); } 

What I am seeing is that the MainForm is shown, but the SplashForm is still visible ‘on top’. What I am currently doing is clicking on the MainForm to manually bring it to the front. Any ideas on why this is happening?

Answer 1

Probably you just want to close the splash form, and not send it to back.

I run the splash form on a separate thread (this is class SplashForm):

class SplashForm {     //Delegate for cross thread call to close     private delegate void CloseDelegate();      //The type of form to be displayed as the splash screen.     private static SplashForm splashForm;      static public void ShowSplashScreen()     {         // Make sure it is only launched once.          if (splashForm != null)             return;         Thread thread = new Thread(new ThreadStart(SplashForm.ShowForm));         thread.IsBackground = true;         thread.SetApartmentState(ApartmentState.STA);         thread.Start();                }      static private void ShowForm()     {         splashForm = new SplashForm();         Application.Run(splashForm);     }      static public void CloseForm()     {         splashForm.Invoke(new CloseDelegate(SplashForm.CloseFormInternal));     }      static private void CloseFormInternal()     {         splashForm.Close();         splashForm = null;     } ... } 

and the main program function looks like this:

[STAThread] static void Main(string[] args) {     SplashForm.ShowSplashScreen();     MainForm mainForm = new MainForm(); //this takes ages     SplashForm.CloseForm();     Application.Run(mainForm); }