David Fowler on the ASP.NET team and I have been bouncing ideas about how to solve an annoyance using LINQ:
If you write properties on the client, you can’t use them in remote LINQ operations.
A quick round-up of some useful LINQ to SQL related resources that are available for developers. I’ve not used everything on this list myself so don’t take this as personal endorsement.
Note: While the T4 templating language is built-in to Visual Studio 2008/2010 it does not come with syntax highlighting or IntelliSense. Check out either:
People have been asking via Twitter and the LINQ to SQL forums so here’s a list I put together on a number of the changes made for 4.0.
25 Aug 200925 Aug 2009 – Updated with additional changes, some of which are new in beta 2.
Taking my bitmap font Envy Code B into the vector TrueType Envy Code R was a long process, the most difficult being hinting.
Bitmap fonts are incredibly easy to make. Using a program like Softy or BitFonter you decide the size of your letters and start plotting pixels. You can see exactly how it will look because you draw every glyph (letter/symbol/number) in every size you want to support. This can obviously be very time consuming and doesn’t let you take full advantage of the resolution of the device and the capabilities it offers. A printer can handle in excess of 300 dpi while a display is typically 72 dpi (Mac) or 96 dpi (Windows) with LCD’s supporting sub-pixels due to the individual layout of the red-green and blue elements you can’t feasibly pre-plot every single combination and even if you could the file size would be rather large.
A few more useful and lesser-known tips for using LINQ to SQL.
There are times when LINQ to SQL refuses to cook up the TSQL you wanted either because it doesn’t support the feature or because it has a different idea of what makes an optimal query.
Being on the inside of a product team often leads to uncovering or stumbling upon lesser-known techniques, and here are a few little nuggets I found interesting – I have more if there is interest.
LINQ to SQL lets you specify that a property is delay-loaded, meaning that not retrieved as part of normal query operations against that entity. This is particularly useful for binary and large text fields such as a photo property on an employee object that is rarely used and would cause a large amount of memory to be consumed on the client, not to mention traffic between the SQL and application.
We’ve all heard of BDD, DDD and TDD but that still leaves 23 letters unaccounted for.
I can now exclusively reveal more! You may recognize some from projects you’ve already worked on but didn’t know had a name much less a recognized methodology.
An improved version is now available.
One of the things I wanted my LINQ to SQL T4 templates to do was be able to split the output into a file-per-entity. Existing solutions used either a separate set of templates with duplicate code or intrusive handling code throughout the template. Here’s my helper class to abstract the problem away from what is already complicated enough template code.
This post is over 10 years old. These templates are no longer maintained and the information may be outdated.
My templates that allow you to customize the LINQ to SQL code-generation process (normally performed by SQLMetal/LINQ to SQL classes designer) have been updated once again.
A question I see from time-to-time on LINQ to SQL relates to changing an entity’s class.
C# and VB.NET don’t allow a class to change its type at run-time and LINQ to SQL specifically doesn’t provide a mechanism for changing the underlying discriminator for this reason.