Question

Using linq I am trying to get a List[Guid], but I am not able to.

I tried this:

var myGuidList = from x in
                 mydatasource
                 where x.Field==value
                 select new Guid(){x.TheGuid};   <- Problem here

Answer 1

It’s not clear what the type of TheGuid property is but if it is a string you could use the following:

IEnumerable<Guid> myGuidList = 
    from x in mydatasource
    where x.Field == value
    select new Guid(x.TheGuid);

And if it is a Guid, well, you could select it directly:

IEnumerable<Guid> myGuidList = 
    from x in mydatasource
    where x.Field == value
    select x.TheGuid;

and if you want to get a List<Guid>, simply use the .ToList() extension method on the result:

List<Guid> guids = myGuidList.ToList();