[ERROR (92, 30): Message=Function isnullorempty is not defined,Source=volt,StackTrace= 在 Igs.Hcms.Volt.VoltEngine.EvalExpression(Expression exp),TargetSite=System.Object EvalExpression(Igs.Hcms.Volt.Tokens.Expression)] [ERROR (103, 30): Message=Function isnullorempty is not defined,Source=volt,StackTrace= 在 Igs.Hcms.Volt.VoltEngine.EvalExpression(Expression exp),TargetSite=System.Object EvalExpression(Igs.Hcms.Volt.Tokens.Expression)]