Iterating through a form's components?

[David Veeneman]

Is there a way to iterate the components on a form?

I need to determine whether an instance of my custom component (a
System.ComponentModel component) is present in a form. I have tried
iterating the Controls collection, but components do not appear to be in
that collection-- I think it's because components inherit from
MarshalByRefObject, rather than Control.

So, how do I find a form's components collection? Thanks in advance.

--
David Veeneman
Foresight Systems

[Phil]

On Thu, 17 Aug 2006 08:27:42 -0500, "David Veeneman"
<da****@nospam.com (domain is my last name)wrote:

>Is there a way to iterate the components on a form?

I need to determine whether an instance of my custom component (a
System.ComponentModel component) is present in a form. I have tried
iterating the Controls collection, but components do not appear to be in
that collection-- I think it's because components inherit from
MarshalByRefObject, rather than Control.

So, how do I find a form's components collection? Thanks in advance.

foreach (Component x in components.Components) {
}
Will this do it? I have never used the "components" property but the
forms designer uses it in this method (below) which it writes. Be
aware that components can be null.
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be
disposed; otherwise, false.</param>
protected override void Dispose(bool disposing) {
if (disposing && (components != null)) {
components.Dispose();
}
base.Dispose(disposing);
}
--
Phil

[David Veeneman]

The problem is that 'components' is a private designer variable. That means
you have to use reflection to get it. See separate thread that I started
today on getting a private variable through reflection:

http://groups.google.com/group/micro...0f10674db3dfa5

Once you've got the 'components' value, then yes, you can simply iterate
through the collection.

--
David Veeneman
Foresight Systems