Query Ordering - OrderBy() ThenBy() C# with Example

OrderByDescending() ThenByDescending() 
string[] names= { "mark", "steve", "adam" }; 
Ascending: 
Query Syntax 
var sortedNames = 
from name in names 
orderby name 
select name; 
Method Syntax 
var sortedNames = names.OrderBy(name => name); 
sortedNames contains the names in following order: "adam","mark","steve" 
Descending: 
Query Syntax 
var sortedNames = 
from name in names 
orderby name descending 
select name; 
Method Syntax 
var sortedNames = names.OrderByDescending(name => name); 
sortedNames contains the names in following order: "steve","mark","adam" 
Order by several fields 
Person[] people = 
{ 
new Person { FirstName = "Steve", LastName = "Collins", Age = 30}, 
new Person { FirstName = "Phil" , LastName = "Collins", Age = 28}, 
new Person { FirstName = "Adam" , LastName = "Ackerman", Age = 29}, 
new Person { FirstName = "Adam" , LastName = "Ackerman", Age = 15} 
}; 
Query Syntax 
var sortedPeople = from person in people 
orderby person.LastName, person.FirstName, person.Age descending 
select person; 
Method Syntax 
 

sortedPeople = people.OrderBy(person => person.LastName) 
.ThenBy(person => person.FirstName) 
.ThenByDescending(person => person.Age); 
Result 
1. Adam Ackerman 29 
2. Adam Ackerman 15 
3. Phil Collins 28 
4. Steve Collins 30