SOS:PropertyGrid question

Question

In my application,I used System.Windows.Froms.PropertyGrid to browse my specail object of class I defined.(e.g.ExampleClass myObj = new ExampleClass()).The ExampleClass has some properties that have been already attached some attributes required by the property grid control.I set property PropertyGrid.PropertySort = PropertySot.Categorized in order to browse properties of my object in different category but not in alpha order.Especially,I want the properties of my object to displayed in property grid in some special order as expected,that is to say,maybe some property first,some property next,...,and some property last.What should I do to achieve this purpose?Thank you.