Removing items in List using LINQ [duplicate]

Question

I have a List of type some entity

List

public class OrderLine
{
   public string productCode;
   public int quantity;


}

i need to remove items from the above List if the productCode is equal to some products.

List<string> ProductsToBeExcluded = new List<string>(){"1234","1237"};

so, from List<OrderLine> i need to remove products which are equal to 1234 and 1237

i have tried

1. create a List<string> from List<OrderLine> using

     List<OrderLine> OrderLines = GetOrderLines();
     var ol = from o in OrderLines
           select o.ProductCode;
   

2.

  List<string> ProductsToBeExcluded = new List<string>(){"1234","1237"};
   var filtered = OrderLines.Except(ProductsToBeExcluded);

how do I proceed further in removing

thanks

Answer 1

In this case you don't need LINQ but can just use List<T>.RemoveAll instead

OrderLines.RemoveAll(x => ProductsToBeExcluded.Contains(x.ProductCode));

Answer 2

Use RemoveAll method of List which accepts predicate

OrderLines.RemoveAll(x => ProductsToBeExcluded.Contains(x.ProductCode));