Is it possible to have a file/directory selection button next to a property value in the PropertyGrid? Hitting the button would launch a standard "Open File" or "Select Directory" type of dialog. In a perfect world, this could be done using an Attribute on the SelectedObject's property.
Yes, add this attribute to the property.
[EditorAttribute(typeof(FileNameEditor), typeof(UITypeEditor))]
来源：https://stackoverflow.com/questions/3656345/propertygrid-possible-to-have-a-file-directory-selection-button-next-to-a-prop