Return the First Element in a Sequence
Use the First operator to return the first element in a sequence. Queries that use First are executed immediately.
Note
LINQ to SQL does not support the Last operator.
Example 1
The following code finds the first Shipper
in a table:
If you run this query against the Northwind sample database, the results are
ID = 1, Company = Speedy Express
.
Shipper shipper = db.Shippers.First();
Console.WriteLine("ID = {0}, Company = {1}", shipper.ShipperID,
shipper.CompanyName);
Dim shipper As Shipper = db.Shippers.First()
Console.WriteLine("ID = {0}, Company = {1}", shipper.ShipperID, _
shipper.CompanyName)
Example 2
The following code finds the single Customer
that has the CustomerID
BONAP.
If you run this query against the Northwind sample database, the results are ID = BONAP, Contact = Laurence Lebihan
.
Customer custQuery =
(from custs in db.Customers
where custs.CustomerID == "BONAP"
select custs)
.First();
Console.WriteLine("ID = {0}, Contact = {1}", custQuery.CustomerID,
custQuery.ContactName);
Dim custquery As Customer = _
(From c In db.Customers _
Where c.CustomerID = "BONAP" _
Select c) _
.First()
Console.WriteLine("ID = {0}, Contact = {1}", custquery.CustomerID, _
custquery.ContactName)