1.CriteriaPropertyEditor

  [EditorAlias(EditorAliases.CriteriaPropertyEditor)]
        [CriteriaOptions("archivetype")]
        [XafDisplayName("高級查詢模塊")]
        [ModelDefault("RowCount", "5")]
        [Appearance("", Criteria = "eUseCriteria=0", Visibility = ViewItemVisibility.Hide)]
        public string criteriagroupoperator { get; set; }

        [Browsable(false)]
        public Type archivetype { get; set; }

 var  Criteria=  CriteriaEditorHelper.GetCriteriaOperator(
                    currentObject.criteriagroupoperator,
                    typeof(YourObject),
                    ObjectSpace);

【原創】XAF CriteriaOperator 使用方式匯總