Question

I have been trying out some LINQ query can someone please show how to convert the following SQL query to LINQ:

SELECT *, firstname+' '+lastname AS FullName FROM Client WHERE age > 25;

Don’t worry about the where part (put it in for completeness) more wandering how to achieve that first part.

Now I have come across something like this:

from c in dc.Clients select new {FullName = c.firstname + " "+c.lastname} 

But i don’t know how to get it to select everything else without specifying it ie:

{firstname = c.firstname, id = c.id ..... etc}

But I was hoping for another way of achieving that.

So I’m just wandering if someone could show me the right or another way of accomplishing this 🙂

Thanks All 🙂

Answer 1

You have to select the actual item then refer to its properties. There’s no way to expand the individual columns into the anonymous type.

var query = from c in dc.Clients
            where c.Age > 25
            select new
            {
                Client = c,
                FullName = c.firstname + " " + c.lastname
            };

foreach (var item in query)
{
    // item.Client.Id
    // item.FullName
    // item.Client.FirstName
}

Selecting the actual item gives you access to the same properties you were using to construct the anonymous type. It’s not a complete waste though if the query had more going on, such as a join with another table and including fields from that result in the anonymous type, along with the entire Client object.