How can you do custom sorting in LINQ with null always on the end?

Question

I need to sort in memory lists of strings or numbers in ascending or descending order. However, the list can contain null values and all null values must appear after the numbers or strings.

That is the input data might be:

1, 100, null, 5, 32.3

The ascending result would be

1, 5, 32.3, 100, null

The descending list would be

100, 32.3, 5, 1, null

Any ideas on how to make this work?

Answer 1

I don't have a compiler in front of me to check, but I'm thinking something like:

x.OrderBy(i => i == null).ThenBy(i => i)