'宣言 Public Class C1UnderlineTool Inherits C1.WPF.RichTextBox.C1ToggleButtonTool(Of C1TextDecorationCollection) Implements IUpdateableTool
public class C1UnderlineTool : C1.WPF.RichTextBox.C1ToggleButtonTool<C1TextDecorationCollection>, IUpdateableTool