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• Corrections for Programming Microsoft LINQ book

  We just published an updated version of the corrections for the Programming Microsoft LINQ book . You can download it from this link . Read More... Posted venerdì 20 febbraio 2009 18.22 by Marco.Russo | 0 Comments

• New templates for LINQ to SQL code-generation

  Damien posted a new version of his templates to improve code-generation of classes for LINQ to SQL, including a short screen-cast that explain how to use it. Valuable resource if you use LINQ to SQL! Read More... Posted mercoledì 21 gennaio 2009 20.42 by Marco.Russo | 0 Comments

• LINQ and Tuples in .NET 4.0

  .NET 4.0 will add the concept of Tuples in the Base Class Library, that will improve interoperability between languages such as F# or IronPython and C# or Visual Basic. LINQ will not have big changes in .NET 4.0, but only some lifting to support new features: Read More... Posted giovedì 27 novembre 2008 18.40 by Marco.Russo | 0 Comments

• Updateable LINQ

  Bart de Smet wrote a very interesting post about the possible creation of an Updateable LINQ provider, especially if it can be used for a SQL dbms (of course it would work with LINQ to SQL but it should be applicable to LINQ to Entities too). I like this Read More... Posted lunedì 24 novembre 2008 20.21 by Marco.Russo | 0 Comments

• LINQ to SQL vs LINQ to Entities - decisions from ADO.NET team

  To make a long story short: the ADO.NET team is now responsible of ADO.NET Entity Framework (including LINQ to Entities) and of LINQ to SQL (the last one was originally in charge of the a separated team, tied to the C# compiler). There is an evident overlapping Read More... Posted lunedì 3 novembre 2008 6.44 by Marco.Russo | 0 Comments Filed under: LINQ, Entity Framework, LINQ to SQL

• Book signing @ PDC 08

  If you are at PDC 2008, I'll be at book signing for Programming Microsoft LINQ at bookstore on Tuesday 28, during the coffee break between 3:00 and 3:30 PM. I and Paolo will be happy to meet you and receive your direct feedback about our LINQ book. Read More... Posted martedì 28 ottobre 2008 1.49 by Marco.Russo | 0 Comments

• Use IEnumerable as a source for SqlBulkCopy

  Today I needed to use SqlBulkCopy class passing an IEnumerable<T> as a source instead of a IDataReader. Before writing something that someone else could have already written, I made some search and I found this interesting post that solve exactly Read More... Posted mercoledì 17 settembre 2008 17.05 by Marco.Russo | 0 Comments Filed under: LINQ

• Non-boolean LINQ predicates

  Bart De Smet just wrote a long post about LINQ predicates that can be defined without returning a boolean value. This is something I partially evaluated writing the Programming Microsoft LINQ book, but in his post Bart goes very deep on this topic and Read More... Posted lunedì 15 settembre 2008 20.18 by Marco.Russo | 0 Comments

• Active queries LINQ

  Paul Stovell made a presentation on " Reactive Programming and Bindable LINQ " at TechED Australia 2008 (unfortunately, I was at the antipode in Italy, but the topic is really interesting). I didn't know there are projects somewhat similar to Bindable Read More... Posted giovedì 11 settembre 2008 19.12 by Marco.Russo | 0 Comments Filed under: LINQ

• LINQ to SQL and the procedure cache of SQL Server

  I just received a mail from Adam Machanic that pointed me to this bug (I would call it a performance issue) about the construction of SQL statements generated by the LINQ to SQL engine. The issue: every string passed as a constant in the query will be Read More... Posted giovedì 28 agosto 2008 11.14 by Marco.Russo | 1 Comments

• IQueryable under the cover

  In the Programming Microsoft LINQ book we dedicated two whole chapters (76 pages) about the writing of a IQueryable LINQ provider: one is about expression trees and the other covers the several ways to extend LINQ, including the writing of an IQueryable Read More... Posted domenica 17 agosto 2008 20.07 by Marco.Russo | 1 Comments

• Important LINQ Changes in .NET 3.5 SP1

  Dinesh Kulkarni wrote an important post about changes in LINQ introduced by .NET 3.5 SP1 that has been released yesterday. One of the interesting changes is in the Cast<T> operator and its behavior is better described in this post by Ed Maurer. Read More... Posted martedì 12 agosto 2008 18.55 by Marco.Russo | 0 Comments

• Dangerous use of ArrayList in Lambda Expressions

  I have just validated this bug posted on Connect. It seems a compiler issue, I'd like to read a Microsoft answer about this. However, the general issue is that using ArrayList in a lambda expression with a collection initializer could be dangerous. There Read More... Posted venerdì 1 agosto 2008 21.53 by Marco.Russo | 0 Comments

• The adoption of LINQ

  Eric White has written an interesting post titled "Are developers using LINQ?" - there are interesting considerations about the adoption of functional programming too, but the most interesting part for me is the list of comment of the post. A lot of people Read More... Posted venerdì 25 luglio 2008 18.06 by Marco.Russo | 0 Comments

• Multiple Results with LINQ to SQL

  I just read a post about getting multiple results with LINQ to SQL without using stored procedures. This technique is interesting when you have multiple queries returning a few rows each one and you want to save time by skipping some roundtrip between Read More... Posted giovedì 24 luglio 2008 17.49 by Marco.Russo | 0 Comments