New Post: PropertyGrid Categories closed by default

Hum...strange. In .Net 4.0, all categories are opened by default, and that is the normal behavior. It should be the same in .net 3.5.

If you have the Plus version, since v2.2, you can use the attribute "ExpandedCategory" and set if a category is collapsed or expanded by default this way :

[ExpandedCategory( "MyCategory", false )]

If you always want all categories to always be Expanded/Collapsed by default, you can go in file :

• Xceed.Wpf.toolkit/PropertyGrid/Themes/Aero2.NormalColor.xaml (in Windows 8)
• Xceed.Wpf.toolkit/PropertyGrid/Themes/Generic.xaml (in others Windows)
  Look for "PropertyItemGroupContainerStyle" ans make sure the "Expander.IsExpanded" is True/False.