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2025-05-14 800a94c4088b5ad82bdb433a9199dc2183d86959 
 Weben_CMSרÓôúÂëÉú³ÉÆ÷/queryExtensions/CmsQueryExtensions/Extension/DynamicSearchParameters/PredicateExtensions/WhereHelper.cs


@@ -17,8 +17,8 @@




        private MemberExpression common_left;




        //private UnaryExpression common_right;


        private ConstantExpression common_right;


        private UnaryExpression common_right;


        //private ConstantExpression common_right;




        public WhereHelper()




@@ -54,8 +54,8 @@




            var propertyValue = converter.ConvertFromInvariantString(value.ToString()); // 3


            var constant = Expression.Constant(propertyValue);


            common_right = constant; // 4




            //common_right = constant; // 4


            common_right = Expression.Convert(constant, propertyType); // 4 //这里必须转换，否则如果字段可为NULL，就会报错


            // common_right = Expression.Constant(value, value.GetType());//构建一个常量,值是  value


        }