simple way to remove properties in propertyGrid

[michelqa]

Hi,

I have a form with a control..(a button for example). Then the
control properties are displayed in a propertyGrid control.

Is there any simple way to remove some unwanted properties from the
propertyGrid... .removing the "AccessibleName " properties by example?

Any example about how to play with the PropertyDescrip torCollection to
remove some properties??
// remove AccessibleName properties from Button properties...
//...
PropertyGrid1.S electedObject =button1;
//...
Thanks

[Marc Gravell]

The simplest way would be to re-declare the property, setting
[Browsable(false )] on the property; example below.

There are other ways you could do it (in increasing complexity):

Use the BrowsableAttrib utes property of the grid to limit visibility
(very crude).

Look at ICustomTypeDesc riptor / TypeDescription Provided for providing
custom metadata for the control, omitting these ones.

Write a custom tab for the property-grid that omits them.

The first is *by far* the simplest, even if it is more work - but note
that this will affect the regular IDE as well as your PropertyGrid.

Marc

== redeclare example ==

using System;
using System.Componen tModel;
using System.Windows. Forms;

class MyControl : Control
{
[DefaultValue("" )]
[Localizable(tru e)]
[Browsable(false )]
public new string AccessibleName
{
get { return base.Accessible Name; }
set { base.Accessible Name = value; }
}

}
static class Program
{
[STAThread]
static void Main()
{
Application.Ena bleVisualStyles ();
using (Form f = new Form())
using (MyControl ctl = new MyControl())
using (PropertyGrid grid = new PropertyGrid())
{
ctl.Dock = DockStyle.Top;
grid.Dock = DockStyle.Fill;
grid.SelectedOb ject = ctl;
f.Controls.Add( grid);
f.Controls.Add( ctl);
Application.Run (f);
}
}
}

[michelqa]

Thanks!...

Your example was really usefull, Now I figure out how to add new
"custom properties and remove unwanted properties into an existing
control.

When changing a property value, the value is displayed in bold...even
if its modified in the code...
by example in your code you change ctl.Dock (ctl.Dock=DockS tyle.Top)
so Dock value is displayed in bold in the property grid... is there
any way to prevent this?

thanks again for your time.

[Marc Gravell]

Again, it depends. If you own the property, you can do things like
specifying a [DefaultValue(.. .)], or providing a "bool
ShouldSerialize Dock()" method (a special convention recognised by the
system) to disable it - but ultimately it doesn't distinguish between
reasons, it just cares that it isn't the default value.

I suspect in this case re-declaring the Foo property and adding a
ShouldSerialise Foo would suffice, but you don't necessarily want to do
this for every property!

If you are using the ICustomTypeDesc riptor/TypeDescription Provider
approach you can also override SouldSerializeV alue on a
PropertyDescrip tor basis; I often use this approach to track changes
since the object was last committed (i.e. the pending changes) - but it
helps that I have a bespoke utility library for doing this... it isn't
something you'd want to redo from scratch regularly!

Mac