It appeared to have the answer, so I made a few changes in your code, and sure enough ... it works now!!
Here's what I changed, in bold (all in the QuickItems.cs file):
In the QuickItems constructor, add ISite as a parameter and set the propertyGrid1.Site property:
public QuickItems(UserControl1 user, IWindowsFormsEditorService editorService, ISite site)
{
InitializeComponent();
ts1 = ts2 = ts3 = ts4 = ts5 = ts6 = 1;
ts7 = ts8 = ts9 = ts10 = ts11 = ts12 = ts13 = 1;
m_user = user;
// I added this
this.propertyGrid1.Site = site;
}
And, in the QuickItemEditor, the site needs to be set in the EditValue() method and passed to the QuickItems() constructor:
public override object EditValue( ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (provider != null)
{
editorService =
provider.GetService(
typeof(IWindowsFormsEditorService))
as IWindowsFormsEditorService;
}
if (editorService != null)
{
QuickItemCollections coll = value as QuickItemCollections;
UserControl1 owner = coll.userControl;
// I add this
IComponent comp = context.Instance as IComponent;
ISite site = comp == null ? null : comp.Site;
//
// and changed this
//QuickItems collEditorFrm = new QuickItems(owner,editorService);
QuickItems collEditorFrm = new QuickItems(owner, editorService, site);
//
context.OnComponentChanging();
if (editorService.ShowDialog(collEditorFrm) == DialogResult.OK)
{
context.OnComponentChanged();
collEditorFrm.ShowDialog();
value = owner.QuickItems;
}
}
return value;
}
It all worked when I did that, so I'm pretty sure that will take care of it.
~~Bonnie DeWitt [C# MVP]
http://geek-goddess-bonnie.blogspot.com
Object Reference not set to an instance of an object in Background image
