[RESOLVED] child forms limit

[scottlafoy]

Just a quick question,

Is there a limit on how many child forms are open at one time? I am using myForm.Show() to display. When I have 12 open up it takes about 8 seconds. I then tried to open ~100 but they never open and I never get an error, the program just stops responding.

Thanks in advance

Scott

[dee-u]

It may depend on the available memory. It is says It has stopped responding it does not necessarily mean it has crashed, perhaps it is still loading all the forms and you just had to wait for it to finish.

[MaximilianMayrhofer]

How would eight forms even fit on a screen? That many forms sounds like a design flaw to me.

[scottlafoy]

Actually I am using infragistics tabbed froms, so each form is full size inside the mdi parent and displaying the selected form on the screen and the rest appear like a tab on the top of the screen with the label being the forms name. It looks just like visual studios with multiple tabs accross the top for different classes open.

Last time I tried to open 100 forms I let it run for about 30 minutes and it was still not responding.

[techgnome]

If that's the case, then you need to look to see what the form is doing when it's loaded/displayed... still.... 100 forms... that's an awful lot.

-tg

[MaximilianMayrhofer]

There is no point in loading 100 forms, because the user isn't going to be able to do anything useful with them. Scrolling left and right to find the right form would be a nightmare.

However, if this is what you are doing, then I suggest you get a little more efficient about it. Don't load forms you potentially won't need into memory right away. You can create 100 tabs, without actually creating 100 forms. Just declare a variable of the appropriate form type and put it in the Tag property. When a tab receives the focus, you initialise the variable in the Tag.

[scottlafoy]

I like your idea of making a variable of the type of form and using that, but I am not sure if I can. The tabbed forms thing on infragistics takes all mdi child forms and turns them into a tab on the mdi parent but in order for them to be picked up they have to be shown .show(). or maybe I am missing how to declair a variable?