Hi ,

where : This clause is used for filtering elements based on a specified condition. It’s similar to the `WHERE`

clause in SQL. When you want to select elements that satisfy certain criteria, you use `where`

.

select : This clause is used for projecting data into a new form. It’s similar to the `SELECT`

clause in SQL. When you want to transform the elements in some way (like selecting specific properties, performing calculations, or projecting them into a different data structure), you use `select`

.

(From num In numbers

Where num Mod 2 = 0

Select num * 2).ToList()

`Where`

is used to**filter elements based on a condition**(`num Mod 2 = 0`

filters even numbers in this case).`Select`

is used to**transform each element**(double the even numbers in this case).`ToList()`

converts the resulting sequence into a list.

If the `numbers`

collection contains the elements 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10,

- The
`Where`

clause filters out only the even numbers, which are 2, 4, 6, 8, and 10. - The
`Select`

clause doubles each even number, resulting in 4, 8, 12, 16, and 20. - Finally,
`ToList()`

converts the sequence 4, 8, 12, 16, and 20 into a list.

Together, this LINQ query filters even numbers from the `numbers`

collection and doubles them, resulting in a list of even numbers doubled.