The where
clause is a filtering operator and used to filter a collections based on the
some specific criteria and after that returns the values from collection based
on your given criteria (returns those which are specified condition is true).
It is accepts a predicate as a parameter.
The where extension method has following two
overloads,
1.
Func<TSource, bool>
2.
Func<TSource, int, bool>
A single LINQ query may contain multiple where clauses and a single clause may
contain multiple predicate sub expressions.
The multiple where
extension methods are valid in a single LINQ query.
For example, Multiple where clauses query,
var query = base.Context.Carts.Where(x =>
x.EmailID == EmailID)
.Where(x =>
x.IsDeleted == false) //APPLIED TO THE RESULT OF THE
PREVIOUS.
.OrderByDescending(x
=> x.CartID)
.ToList();
//OR
var query = base.Context.Carts
.Where(x =>
x.EmailID == EmailID && x.IsDeleted == false)
.OrderByDescending(x => x.CartID)
.ToList();
//OR
var query = from cart in Carts
orderby
cart.CartID descending,
cart.CartNumber descending
select cart.Name;
//OR
var query = from customer in Customers
where
customer.ID == 101
where customer.ID == 103
where
customer.ID == 105
select
customer;
I hope it is helpful to you!
Thank you!
|
Anil Singh is an author, tech blogger, and software programmer. Book writing, tech blogging is something do extra and Anil love doing it. For more detail, kindly refer to this link..
|