Distinct list with class property in Linq

In some scenario you may need to group by one of the property in collection so there is no direct way to group but we can use this query

lstTempOutlet = lstOutlets.GroupBy(o =>o.propertyname).Select(o => o.First()).ToList<>();

In case to multiple properties 

lstTempOutlet = lstOutlets.GroupBy(o => new {o.propertyname1, o.propertyname2, o.propertyname3 , etc.,}).Select(o => o.First()).ToList<>();