How To: Display objects in a PropertyGrid DropDown list?

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Steve - 28 Feb 2004 00:04 GMT

I followed the MSDN example that uses a StringConverter to display states
(like Ohio, Florida,) in a PropertyGrid using a DropDown list. This works
fine for strings, but I would like to do this with objects I create on the
fly.

I think I have to create a custom TypeConverter, but I'm not sure how. Any
examples would be helpful.

Thanks,

Steve

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Frank Hileman - 28 Feb 2004 00:30 GMT

Hello Steve,

You need a custom UITypeEditor, that overrides GetEditStyle, and returns
UITypeEditorEditStyle.DropDown. Then you override EditValue, and have that
function create a custom form of your own creation. Be sure to use a
PropertyDescriptor (via TypeDescriptor) to change the final property, so you
get a designer transaction, and the OnComponentChanging/OnComponentChanged
functions are called automatically for your property.

Look for articles by Shawn Burke, especially the one with "RAD" in the
title, for more info on the property grid.

Regards,
Frank Hileman

check out VG.net: www.vgdotnet.com
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> I followed the MSDN example that uses a StringConverter to display states
> (like Ohio, Florida,) in a PropertyGrid using a DropDown list. This works
[quoted text clipped - 7 lines]
>
> Steve

Reply to this Message

Herfried K. Wagner [MVP] - 28 Feb 2004 00:54 GMT

Frank,

* "Frank Hileman" <frankhil@no.spamming.prodigesoftware.com> scripsit:

> You need a custom UITypeEditor, that overrides GetEditStyle, and returns
> UITypeEditorEditStyle.DropDown. Then you override EditValue, and have that
[quoted text clipped - 5 lines]
> Look for articles by Shawn Burke, especially the one with "RAD" in the
> title, for more info on the property grid.

A very interesting article on the PropertyGrid can be found here:

<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndotnet/html/u
singpropgrid.asp>