Linq selecting items that exist in both list

user_26783 0
Viewed 25096

I have 2 list:

myObject object1 = new myObject(id = 1, title = "object1"};
myObject object2 = new myObject(id = 2, title = "object2"};
myObject object3 = new myObject(id = 3, title = "object3"};

//List 1
List<myObject> myObjectList = new List<myObject>{object1, object2, object3};

//List 2
List<int> idList = new List<int>{2, 3};

Is there a way using Linq to pull only the objects in the first list that exist in the second list so that I am left with:

{object2, object3}

I looked at intersect but it seems that this will only work if both list are of the same type.

Any help would be greatly appreciated.

Thanks.

list linq c#
3 Answers

The official LINQ solution as of .Net 6 is IntersectBy:

var matches = myObjectList.IntersectBy(idList, o => o.Id);
user_514280
Related