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C# 3.0 Query Expression Translation Cheat Sheet

As a reference for some planned and unplanned future posts, I wanted to share out my “cheat sheet” for the C# 3.0 translation carried out for query expressions. Obviously it’s based on the C# 3.0 Language Specification more specially section 7.15.2. A few remarks that deserve more attention when reading...

Posted to B# .NET Blog (Weblog) by bart on 08-30-2008
What Do VB 9.0 Error “BC36593: Expression of type ‘X’ is not queryable.” And C# 3.0 Error “CS1936: Could not find an implementation of the query pattern for source type ‘X’.” Really Mean?

While preparing for another one of my posts, soon to be published, I received the following: What can one do when observing such a message? Since watching a grown man cry is both a pathetic and embarrassing situation, downloading the language specification is a good start. Here are my findings. Section...

Posted to B# .NET Blog (Weblog) by bart on 08-20-2008
The Most Funny Interface Of The Year … IQueryable<T>

Recently I delivered a talk at TechEd South Africa on “Custom LINQ Providers”. This is a very broad topic to cover in barely 60 minutes especially if one has to explain pretty “abstract” pieces of art like IQueryable<T>. Apparently I managed to do so looking at the scores <g>. But why is...

Posted to B# .NET Blog (Weblog) by bart on 08-15-2008
TechEd 2008 South Africa Demo Resources

Last week, I had the honor to speak at TechEd 2008 South Africa on a variety of topics. In this post I’ll outline all of the resources, including uploads of all my demos, referred to during my presentations. But before I do so, I sincerely want to point out what a great audience I got. Thanks to everyone...

Posted to B# .NET Blog (Weblog) by bart on 08-09-2008
Dealing with anonymous types in Reflection.Emit

A few days ago I got an interesting question from one of my blog readers. During my blogging battle with pattern matching , I mentioned the concept of compiling expression tree lamdas on the fly to IL-code. This is actually one of the core parts of the System.Linq.Expressions implementation when expressions...

Posted to B# .NET Blog (Weblog) by bart on 06-04-2008
Q: Is IQueryable the Right Choice for Me?

Introduction Recently I delivered a session on Custom LINQ Providers - LINQ to Anything at the TechDays conferences in Ghent and Lisboa. The core of the session focuses on expression trees and translating those at runtime into a query language like CAML or LDAP (as the running samples). In this approach...

Posted to B# .NET Blog (Weblog) by bart on 04-27-2008
LINQSQO goes RTM

I just released the RTM bits of LINQSQO on CodePlex . This project was one of my first LINQ-related ones and goes back to the early PDC 05 days where LINQ was first shown to the world. The project contains a custom implementation of the LINQ Standard Query Operators used in LINQ. More specifically, it's...

Posted to B# .NET Blog (Weblog) by bart on 11-22-2007
LINQ-SQO v0.9.2 (for Orcas Beta 2) RTW

With the advent of Orcas Beta 2 earlier this week, it's about time to ship an update to the LINQ-SQO project. You can download the 0.9.2 release right now from CodePlex at http://www.codeplex.com/LINQSQO . The goal of this project is to provide a custom implementation of the LINQ to Objects Standard...

Posted to B# .NET Blog (Weblog) by bart on 07-28-2007
LINQ to SharePoint - Improving the parser == debugger visualizer fun

Welcome back to what's going to end up as "LINQ to SharePoint: The Cruel Sequel" :-). The last couple of days, LINQ to SharePoint has been a full-time job and the result is getting better and better build after build. In this post, I'd like to highlight another feature that was planned...

Posted to B# .NET Blog (Weblog) by bart on 07-05-2007
LINQ to SharePoint - Introducing SPML

In today's post I'd like to introduce a new concept that will be introduced in LINQ to SharePoint v0.3: SPML or the SharePoint Mapping Language. It didn't make it for the 0.2 release due to time restrictions, but tonight the first portion of the POC code has been checked in to CodePlex. So...

Posted to B# .NET Blog (Weblog) by bart on 07-01-2007

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