Select Multiple Values from a Collection using Lambda Expression

Question

How do I select two or more values from a collection into a list using a single lambda expression? Here is what I am trying:

List<Prodcut> pds=GetProducts();
List<Product> pdl = new List<Product>();
foreach (Product item in pds)
{
    pdl.Add(new Product
    {
        desc = item.Description,
        prodId = Convert.ToInt16(item.pId)
    });
}

GetProducts() returns a list of Products that have many (about 21) attributes. The above code does the job but I am trying to create a subset of the product list by extracting just two product attributes (description and productId) using a single lambda expression. How do I accomplish this?

Selman Genç · Accepted Answer · 2018-09-03 00:59:59Z

4

What you want to do is called projection, you want to project each item and turn them into something else.

So you can use a Select:

var pdl = pds.Select(p => new Product 
                              { 
                                  desc = p.Description, 
                                  prodId = Convert.ToInt16(p.pId)
                              }).ToList();

answered Sep 3, 2018 at 0:59

Selman Genç

102k15 gold badges126 silver badges193 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Xami Yen Over a year ago

Simple and perfect!

Collectives™ on Stack Overflow

Select Multiple Values from a Collection using Lambda Expression

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related