![](dotnetdiagramimages/GrapeCity_WPF_SpreadGrid_GrapeCity_Windows_SpreadGrid_DateOccurringRule.png)
'宣言
Public NotInheritable Class DateOccurringRule Inherits FormattingRuleBase
public sealed class DateOccurringRule : FormattingRuleBase
System.Object
GrapeCity.Windows.SpreadGrid.FormattingRuleBase
GrapeCity.Windows.SpreadGrid.DateOccurringRule