Re: Open child form from dialog form

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"Simon Abolnar" <Simon.Abolnar@xxxxxxxxx> schrieb 
Does the dialog form know the MDI form or is it a multi-purpose
form that  can be used from different places? That's a question
of abstraction. What  does the dialog form do? Will it be closed
after the child Form has been  opened? Which results can it pass
back to the caller?


My dialog form is login form. When application start,
dialog is open through ShowDialog.


Is the login form the startup object of the project?

If login is successful, I would like to close my dialog form and
open other  child form of MDI.


This sounds like the MDI form is the startup form.

Which one is true?

I ask to find the best solution. 

MDI form is startup form.
In Load event I show dialog (login) form.

IMO this is not good design. I guess the login form also has a cancel button and if it's pushed, the program exits, right? But then it's too late because the MDI form is about to be shown. I'd changed it this way:

shared sub main

   dim loginform as new loginform

   if loginform.showdialog = dialogresult.ok then
       application.run(new mdiform)
   end if

end sub

Despite, I still don't know why you want to open an MDI child form from the login form. Is the child form always to be displayed at startup or does it depend on any selection within the login form?


Armin 

.

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