Get distinct items from a list

Try:

var g = collection.Select(i => i.Property1).Distinct();

Could you post some source code so that we can give you a better example?

EDIT:

In my example, I have a collection collection which contains numerous instances of your class. I'm then selecting Property1 from each class, filtering to the distinct values of that property.

I have found this useful and working fine for me for strings.

var distinctNames = (from d in YourList select d).Distinct(); 

Hope this is useful for some one like me searching for details in SO.

Example of a more complex distinct'ing....

licenseLookupItems = tmpList .GroupBy(x => new {x.LicenseNumber, x.Name, x.Location, x.Active, x.Archived}) .Select(p => p.FirstOrDefault()) .Select(p => new LicenseNumberLookupItem { LicenseNumber = p.LicenseNumber, Name = p.Name, Location = p.Location, Active = p.Active, Archived = p.Archived }) .ToList();