![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__OverlayItemConditionalFormattingRuleExpression.png)
'宣言
Public Class _OverlayItemConditionalFormattingRuleExpression Inherits _RuleExpression Implements IRuleExpression
public class _OverlayItemConditionalFormattingRuleExpression : _RuleExpression, IRuleExpression
System.Object
GrapeCity.DataVisualization.Chart._RuleExpression
GrapeCity.DataVisualization.Chart._OverlayItemConditionalFormattingRuleExpression