When the document generates, a new group is created if at least one expression in the Grouping.Expressions collection evaluates to a different value.
'宣言 Public Class Grouping
'使用法 Dim instance As Grouping
public class Grouping
System.Object C1.C1Preview.DataBinding.Grouping
Grouping メンバ C1.C1Preview.DataBinding 名前空間