Displayed form closes automatically

[thadley]

Help,

I am a new to the .net environment and I am hoping to move more into this new world. But, I am struggling with a, I'm sure, a simple problem. When I run the following code.

Module main
'Set DB Connection Info
Public dbServer As String = "tempDB"
Public dbName As String = "namedb"

Sub main()
Dim loginForm As New frmLogin()
loginForm.Show()
End Sub
End Module

This program displays the form for about a second and then it closes. Why?

Thanks so much in advance!
Thom

 

[JohnYingling]

When Sub Main ends, the application ends.

Try this in Sub Main instead of Show.
Application.Run(New frmGen())

but as soon as that form is closed, control will be returned to Sub Main and the application will end regardless if how many other forms are open.

See System.Windows.Forms.Application

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[JohnYingling]

OR
Right-Click on the Projct in the Solution Explorer, select Properties and set Startup object to a form name. When this form closes, the application ends.

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[thadley]

John,

Thanks very much for the insightful info. That helped.

Sure do appreciate it.

Thom

 

[Zarcom]

The other thing to do if you want to show the form from sub main is to show it as a dialog.. which stops execution in the calling procedure untill the form is closed.

syntax is as follows

dim myform as form1
myform.showdialog
That'l do donkey, that'l do
Mark

 

[JohnYingling]

dim myform as Newform1
myform.showdialog

The problem with ShowDialog (modal form) is that you can not show other forms as modeless and you can not hide the modal form.

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Generate Sort Class in VB or VBScript

 

[Zarcom]

That is true That'l do donkey, that'l do
Mark

 

[thadley]

Thanks again for the insight. Here is a thought. Would it be possible to use the .showDialog for the username and password form, check for the correct information, and if it is correct use the Application.Run(New frmGen())
to begin the "real" program? One downside, I guess, is figuring out how to close the dialog window.

Thanks again,
Thom

 

[JohnYingling]

Why not go to a main form method that displays the password dialog form and then continues on if all is OK, closing the dialog form.

http://www.VBResizer.com

Forms/Controls Resizing/Tabbing Control

http://www.VBCompare.com

Compare Code (Text)

http://www.VBSortGen.com

Generate Sort Class in VB or VBScript

 

[thadley]

Great idea! That worked. Clean and simple....well simple is relative. I really do appreciate the help and time.