Order By on specific column - entity-framework

Question

I am trying to get the distinct records
var records = (from entry in db.Table1
select new
{
RowID = entry.RowID,
FirstName = entry.First,
LastName = entry.Last,
Restricted = (entry.Prohibited == null || entry.Prohibited == "False") ? "Restricted" : "Not Restricted"
}).ToList();
Here RowID is an primary key. I want to get the distinct First and Last Name.
For example:
RowID First Last Prohibited ...
1 A B False
2 A B False
3 A B False
4 Z Y True
5 Z Y True
What I am trying to get here is:
RowID First Last Prohibited
1 A B False
4 Z Y True
How can I get it?

Answer 1

var records = (from entry in db.Table1
group entry by new {entry.First, entry.Last} into g
let entry = g.FirstOrDefault()
select new
{
RowID = entry.RowID,
FirstName = entry.First,
LastName = entry.Last,
Restricted = (entry.Prohibited == null || entry.Prohibited == "False") ? "Restricted" : "Not Restricted"
}).ToList();
By grouping the items by the combined first and last name, and then only taking the first item in each group, you effectively ensure that you're getting distinct items based on those values.

Answer 2

Simply you can do in this way:
var records =
(from entry in db.Table1
select new {
FirstName = entry.First,
LastName = entry.Last,
Restricted = (entry.Prohibited == null || entry.Prohibited == "False") ? "Restricted" : "Not Restricted"
}).Distinct();
If you want the rowID also, you can read select-distinct-using-linq.