Sorting with Nulls Last

Question

I have the following:

public IEnumerable<Customer> SortByRegion(IEnumerable<Customer> customerList)
{
    return customerList.OrderBy(x => x.Region).ThenBy(x => x.ContactName);
}

It needs to Orderby Region, then by ContactName. But have the Null Regions at the bottom. I have tried the following:

customerList.OrderBy(x => x.Region != null).ThenBy(x => x.ContactName);

But id did not work. Been googling for a while. Cant seem to find it.

Answer 1

You can do something like this:

OrderBy(x => x.Region != null ? 1 : 0)