Linq
There are 7 entries for the tag
Linq
LightSpeed 3.1 released – Eeek, I missed mentioning the release of fellow New Zealanders Mindscape as they released version 3.1 of their LightSpeed O/RM product last month. Some great looking features in there – obviously Visual Studio 2010 support is a must, but saved quick views into the model is something which has my mouth watering, and splitting large models into multiple files is a a nice feature too. Simplify, Shorten and Speed Up Your LINQ Statements with "Let" – a useful LINQ tip. A little bit of refactoring ahoy for me in a few places now I think....
Originally from dotnet-snippets this lovely piece of code shows the power and danger of LINQ in one go:
var files = from file in new DirectoryInfo(@"C:\").GetFiles()
where file.Name.StartsWith("_")
select file;
Sure, you could use that piece of code to search for files… but don't.
(Although surely it can't be long before someone adds deferred execution support for a filesystem? Maybe it's coming in WinFS Forever?)
Tags: LINQ
The answer to my LINQ query turned out to be pretty simple in the end – all I needed to do was run my query against a list. I.e.: args.Result = from userimage in db.UserImages becomes args.Result = from userimage in db.UserImages.ToList() (Thanks Blair!) Tags: LINQ
I'm throwing this out there hoping there's a LINQ guru lurking among my readership somewhere. I'm trying to add a Row Number Column to a LINQ query. In fact, this looks to be exactly what I want to do, however his example won't compile for me - "An expression tree may not contain an assignment operator". I'm hoping there's something simple and obvious I've missed. My code looks something like: int i = 1; args.Result = from userimage in db.UserImages where userimage.UserID == userGuid.Value ...
"If you're using a loop, you're doing it wrong" by Chuck Jazdzewski is a quick primer to LINQ. It's a reminder that a lot of developers are going to make a conscious effort to change the way they approach problem solving when they're using LINQ. Of course any ex Notes/Domino developers with @Function programming experience will be used to stringing operators together, so they should be right at home! Tags: LINQ
LINQPad is a handy tool for anyone who works with LINQ: LINQPad is more than just a LINQ query tool: it's a code snippet IDE. Instantly execute any C# 3 or VB 9 expression or statement block! Best of all, LINQPad is free and needs no installation: just download and run. The executable is under 2MB and is self-updating. Fun! Tags: ASP.NET , SQL , LINQ
Fans Bouma is documenting the process of adding linq support to LLBLGenPro in a series of posts. One of the pingbacks named the series "A diary of LINQ pain" which sounds pretty appropriate! Tags: LLBLGenPro, Linq
About me
My name is Ross Hawkins and I'm a developer, consultant, business owner and writer based in Auckland,
New Zealand (pictured below!). My current work revolves around ASP.NET, C#, jQuery, Ajax,
SQL Server, and a mix of other Microsoft development technologies.
I also have about 15 years of experience with IBM Lotus Notes/Domino and associated technologies. While Notes/Domino
is no longer my primary focus I still like to dabble and keep my skills up to date.
I own and run 2 businesses - Hawkins Consulting Services,
and Ignition Development.
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Published on April 15, 2007
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