How can we do a group by using LINQ query

Below is the code snippet which shows how group by query is written using LINQ. You can see we have created first a temp variable i.e. ‘GroupTemp’ and then we have used the ‘Select’ clause to return the same.
 

var GroupCustomers = from ObjCust in objCustomer

group ObjCust by ObjCust.City into GroupTemp

select new {GroupTemp.Key,GroupTemp};

Below image shows group by in action.