Cannot remove a user control from the toolbox

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From: BBM (bbm_at_bbmcompany.com)
Date: 09/08/04 

Date: Wed, 8 Sep 2004 14:05:08 -0700

I'm having a devil of a time with VS "losing" my user controls from forms.
Earlier today, I suddenly started having "System.OutOfMemoryException"
crashes after a simple (or so I thought) change to one of the user controls
on the main form.

When I went to the visual design version of my main form, one of my user
controls showed a whole series of errors in text INSIDE the panel. I deleted
the control from the form and attempted to add it back from the toolbox and
got exactly the same display (error messages written inside the control
outline).

Since the solution has been compiling without errors, I assumed that the
problem was probably that VS had somehow lost it's link to the user control.
So, I tried to remove the user control from the toolbox (thinking I'd re-add
it and restore the link). I used the Add/Remove toolbox controls dialog, and
unchecked the offending user control and hit OK. No errors, but the User
Control is still in the toolbox, and I still get the error behavior if I try
to use it. The "removed" control no longer shows in the Add/Remove control
dialog.

I'm considering using the "Reset" key on the Add/Remove dialog, but I have a
number of other custom controls, and other user controls that use those
custom controls and I'm not looking forward to re-doing all that stuff.

I have all the source backed up in Visual SourceSafe, but I don't think that
returning to a previous source version will help this toolbox problem.

Does anybody have any ideas how to get the "old" reference out of the
toolbox without blowing everything away?

Thanks.

BBM

PS. My code started blowing up when I started doing a "default"
instantiation of two working objects on one of the user controls. The
constructor of the user control "binds" properties from one of the working
objects to controls on the main panel of the user control.

So my code was changed from...

DFType wdf;
DFType edf;

to...

DFType wdf = new DFType(); // properties later bound in the constructor
DFType edf = new DFType();

DFType is very small and simple.
wdf has properties bound to controls on the user control's main panel.

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