by (C# Reference)
The 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.
Example
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.
var query = from student in students
group student by student.LastName[0];
See also
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.