How to orderby child property in EF

I basically want to write this in Lambda EF.

select c.* from company c
left join companyfeature cf 
on c.companyID = cf.co开发者_C百科mpanyID
AND cf.FeatureID = 1
order by FeatureID desc, c.Name

I can't seem to figure it out.

In EF they are Companies & CompanyFeatures entities

For Claus: I never said I didn't try, I said I couldn't figure it out. But to prove I'm not some free loader to you; here is my linq statement. (Yes I have my FK in place)

Companies
.OrderByDescending(c => c.CompanyFeatures.Any(f => f.FeatureID == 1))
.ThenBy(c => c.Name)

That actually works, but it produces an ungodly SQL statement that takes 6 seconds vs ms for my SQL statement above. So I assume I've wrote it incorrectly. I know there are a lot smarter people out there than me so I'm hoping someone will be willing to share their knowledge. Thanks in advance.

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Try this (Note that this is C# but VB is quite similar.):

 var result = 
    from Company in Companies
    from CompanyFeature in Company.CompanyFeatures.Where(cf => cf.FeatureID == 1).DefaultIfEmpty()
    orderby Company.Name
    select { Company, CompanyFeature };