小编Dan*_*ame的帖子

我的c#代码在示例中到处都有问题,他们像我一样,但不知怎的,我会得到一些错误

编译器在g.Datum说,他不知道Datum

并且在"返回查询"他说 - cannot convert,有一个明确的转换

     var query = (from p in dataContext.Untersuchungen
                  orderby p.Datum
                  group p by p.Datum into g 
                  let number = (from n in dataContext.Untersuchungen
                                where n.Datum == g.Datum
                                select n).Count()
                  select new StatsistikObjekt() { Date1 = g.Datum, number1 = number });
       return query;

希望你能帮助我=)