Lamda expression will not compile

Posted by John Soer on Stack Overflow See other posts from Stack Overflow or by John Soer
Published on 2010-04-05T16:47:14Z Indexed on 2010/04/05 16:53 UTC
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lambda

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c#

I am very confused

I have this lamba expression

tvPatientPrecriptionsEntities.Sort((p1, p2) =>
p1.MedicationStartDate.Value.CompareTo(p2.MedicationStartDate.Value));

Visual studio will not compile it and complains about syntax.

I converted the lamba expression to an anonymous delegate as so

tvPatientPrecriptionsEntities.Sort(
  delegate(PatientPrecriptionsEntity p1, PatientPrecriptionsEntity p2) 
  { return p1.MedicationStartDate.Value.CompareTo(p2.MedicationStartDate.Value); }
  );

and it works fine.

The project is uses the .net 3.5 framework and I have a reference to system.linq.

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