null-propagation-operator

C# 6.0 Null Propagation Operator & Property Assignment

You’re not the only one! SLaks raised this as an issue (now here) Why can’t I write code like this? Process.GetProcessById(2)?.Exited += delegate { }; and after it was briefly closed as “By design” the ?. Operator never produces an lvalue, so this is by design. someone commented that it would be good for property … Read more

An expression tree lambda may not contain a null propagating operator

The example you were quoting from uses LINQ to Objects, where the implicit lambda expressions in the query are converted into delegates… whereas you’re using EF or similar, with IQueryable<T> queryies, where the lambda expressions are converted into expression trees. Expression trees don’t support the null conditional operator (or tuples). Just do it the old … Read more