List.SelectMany()、Linq 和 lambda
我有课。
public class MedicalRequest
{
private int id
private IList<MedicalDays> Days
private string MedicalUser
...
}
另一个
public class MedicalDays
{
private int id;
private DateTime? day
private MedicalRequest request
...
}
我使用 nhibernate 返回一个时间范围内所有 MedicalDays 的列表。我想对结果列表执行类似的操作，
//nhibernate query
IList<MedicalDays> days = daysDao.FindAll(searchCritCollection);
//select a list of days from resulting list
IEnumerable<MedicalDays> queriedList =
days.SelectMany(i => i.MedicalRequest.MedicalUser == employee);
Linq 告诉我无法通过用法推断类型。我想知道我做错了什么，以及是否有更好的方法来做这样的事情。
感谢您抽出时间。
I have a class.
public class MedicalRequest
{
private int id
private IList<MedicalDays> Days
private string MedicalUser
...
}
and another
public class MedicalDays
{
private int id;
private DateTime? day
private MedicalRequest request
...
}
I'm using nhibernate to return a list of all the MedicalDays within a time span. I'd like to do something like this to the resulting list
//nhibernate query
IList<MedicalDays> days = daysDao.FindAll(searchCritCollection);
//select a list of days from resulting list
IEnumerable<MedicalDays> queriedList =
days.SelectMany(i => i.MedicalRequest.MedicalUser == employee);
Linq tells me that the type cannot be inferred by the usage. I'd like to know what I'm doing wrong, and if there is a preferred way of doing something like this.
Thanks for your time.
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在我看来，您想要过滤列表
days。如果这就是你想要的，你应该使用It seems to me, that you want to filter the list
days. If that's what you want, you should use