c#-4.0 - 依靠 IEnumerable

Question

我正在使用 Rob Conery 的 Massive ORM。

有没有一种优雅的方法来计算返回的记录集？

dynamic viewModelExpando = result.ViewData.Model;
var queryFromMassiveDynamic = viewModelExpando.TenTricksNewestFirst;

//fails as have actually got TryInvokeMember on it
var z = queryFromMassiveDynamic.Count();

//works
int i = 0;
foreach (var item in queryFromMassiveDynamic) {
    i++;
}

Answer 1

与其使用扩展方法成员语法调用它，不如尝试直接调用静态方法。

int count = Enumerable.Count(queryFromMassiveDynamic);