コード例 #1
0
        public override Expression ToExpression(ParameterExpression paramExpr)
        {
            var        navExpr     = NavPropBlock.ToExpression(paramExpr);
            var        elementType = NavPropBlock.Property.ElementType;
            MethodInfo mi;

            if (Operator == Operator.Any)
            {
                mi = TypeFns.GetMethodByExample((IEnumerable <String> list) => list.Any(x => x != null), elementType);
            }
            else
            {
                mi = TypeFns.GetMethodByExample((IEnumerable <String> list) => list.All(x => x != null), elementType);
            }
            var lambdaExpr = Predicate.ToLambda(elementType);
            var result     = Expression.Call(mi, navExpr, lambdaExpr);

            return(result);
        }
コード例 #2
0
        public override Expression ToExpression(ParameterExpression paramExpr)
        {
            var        navExpr     = NavPropBlock.ToExpression(paramExpr);
            var        elementType = NavPropBlock.Property.ElementType;
            MethodInfo mi;

            if (Operator == Operator.Any)
            {
                mi = TypeFns.GetMethodByExample((IQueryable <string> list) => list.Any(x => x != null), elementType);
            }
            else
            {
                mi = TypeFns.GetMethodByExample((IQueryable <string> list) => list.All(x => x != null), elementType);
            }

            var lambdaExpr  = Predicate.ToLambda(elementType);
            var castType    = typeof(IQueryable <>).MakeGenericType(new Type[] { elementType });
            var castNavExpr = Expression.Convert(navExpr, castType);
            var result      = Expression.Call(mi, castNavExpr, lambdaExpr);

            return(result);
        }