frenchie frenchie - 1 month ago 11
C# Question

Mapping a list of object models onto another list using linq

I have two object models that share some properties and a list of one type that I want to use to create a list of another type. For now, I have something like this (and it works):

List<ObjectA> TheListOfObjectsA = the result of some query;
List<ObjectB> TheListOfObjectsB = new List<ObjectB>();

foreach (ObjectA TheObjectA in TheListObjectsA)
{
ObjectB TheObjectB = new ObjectB();

TheObjectB.Prop1 = TheObjectA.Prop1;
TheObjectB.Prop2 = TheObjectA.Prop2;

TheListOfObjectsB.Add(TheObjectB);
}


I'm curious if and how I could rewrite this in a linq statement without the loop (even thought we know the linq statement will be executed as a loop).

Thanks.

Answer

Do you mean this?

var TheListOfObjectsB  = TheListObjectsA.Select(a => new ObjectB() { Prop1  = a.Prop1, Prop2 = a.Prop2 }).ToList();