Well, after developing a plugin based architecture, with lots of menuitems, i
found that after adding a menuitem, and later removing, results in increased
memory.
I know all that thing with Dispose, finalizers, garbage collector, and so

Hi, all
Why I can't use System.Management class libraries?
Best Regards
Frank Jiao

Is there any way to refer to nodes in a TreeView's hierarchial
TreeNode structure by numeric indexes like with a simple Array?
I need to associate indexes with each node and be able to lookup nodes
using that index. Is there easier way to do this than recursively

As you all know, when we call EndCurrentEdit on a BindingManagerBase class,
the associated DataSet's mechanisms for validating the data types,
nullability, uniqueness, and other constraints are set in motion.  If a
constraint is violated, an exception is thrown.  Now I want that ...

I want to 'fire' a WM_SYSCOMMAND event w/ command type: SC_CONTEXTHELP.
This is the event that gets called when the Context-Sensitive '?' button is
pressed in a dialog under .NET.  I figured all this out by using the Visual
Studio.NET  "Spy++" utility to record all of the event ...

Here's a problem:
I need to have the previous size of a control.  The OnSizeChanged event
triggers after a new size is supplied to the control, and on this
eventhandler you'll have no idea of its previous size since it was already

I would like to use a component to add a control to a form. This will be
used to make a component that can enable/disable visual features on a form
without making every feature a toolbox item.
I can add and remove the control to the forms component container by using

I have derived from a combo box which is linked to a static list of countries
in the constructor I have used the following in the constructor to populate
the box
InitializeComponent();

It was fairly 'easy' to implement the "What's This" Help arrow in MFC, but
now I'm stumbling around trying to implement it in .NET, so...
1) If there's a good example of how this is done, please let me know.
2) Currently, I'm capturing the mouse (so I don't lose the "What's This"

When you have a control, and Localizable = FALSE, all child controls
serialize into the InitializeComponent method.  There are some
exceptions, eg. Images have their value written into the .resx file.
Eg.    this.label1.Location = new System.Drawing.Point(104, 64);

(IMHO) I think it's poor design to directly refer to a form's controls
outside of the form itself. Having to browse through all of them in
intellisense is also annoying. Is there an IDE option that changes the form
designer's default control declaration to Private instead of Friend? ...

I want to create a list collection of complex frames.  I.e. I want a listbox
type of container, where the entries are complex ( each entry contains
individual buttons / images / text ).
My original idea was to use a custom listbox, and each item in the list

I'm trying to call a public function located in a different class, but get
an error message:
Object reference not set to an instance of an object.
I've got 2 classes: clsMain and clsData. In clsData I've a filled (private

I created a form with a toolbar and main menu.  The form is basically
a text editor similar to WordPad.  Now I have a second form that I
determined would benefit from having the toolbar and menu items (and
associated code) from the first form.  The second form has additional

In C#, I kept on running into StackOverflowException in Main(). After some investigation, it looks like this happens whenever I call ShowDialog on an instance of OpenFileDialog.
So here's what I did: I started a new windows form, added one button, and copied the OpenFileDialog ...