by (C# Reference)
Updated: July 20, 2015
For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.
by contextual keyword is used in the
group clause in a query expression to specify how the returned items should be grouped. For more information, see group clause.
The following example shows the use of the
by contextual keyword in a
group clause to specify that the students should be grouped according to the first letter of the last name of each student.