Cannot create window handle

[Malfunction]

I created a rather complex usercontrol (containing about 100 controls itself).

Now I was testing the memory usage by adding 200 of them in a for-loop.

I get a 'System.ComponentModel.Win32Exception' and "Error on creating Windowhandle" as additional information.

 

When creating 100 controls it takes some time but it works.

In the application those controls are only created one at a time so the speed of creating the controls isn't important but the memory usage (worst case.about 200 of these controls will exist).

 

How can I find out what caused that exception?

The system I'm testing the app is pretty old (PIII 500, 512MB RAM).

[PlausiblyDamp]

When you say your user control has about 100 constituent controls - what kind of controls does it contain and is there nothing you can do to reduce the number?

Also why would you need 200 of these visible at once? A form with close to 20,000 controls on it would seem rather a lot to say the least.

[Malfunction]

The user control contains RadioButtons or Checkboxes and Textfields. It's basically a questionaire so I can't reduce the number of contained controls.

However I made a mistake. Not 200 user controls have to be visible at a time as they are on different pages but only 1-5 (depending on their size).

I wanted to check their memory usage and simply added them to my form but I guess I should just instanciate them and check the memory usage without displaying them.