Bug.Net meeting on SQL Server Compact Edition

A few months ago I did a presentation to the Birmingham .Net Users Group (BUG.NET). The subject was SQL Server Compact Edition, in it I discuss both the ‘traditional’ way of accessing a SSCE file as well as using LinqToSQL.

This is a recording of a live presentation, so the audio quality may not be as good as some of the previous presentations I’ve done, it was my first experiment in recording a session live. Let me know how it works for you, I did make every attempt to clean up where I could and ensure the audience was understandable as well.

The wmv is about 76 meg, you can download the wmv directly or watch streaming below.

SQL Server Compact Edition Connection Strings

In my recent presentation I talked about an important but subtle difference with connection strings when using SQL Server Compact Edition. It was so important I thought I’d make a special blog post out of it.

There are two methods for programmatically accessing data in SQL Server Compact Edition (SSCE). The first method is using the System.Data.SqlServerCe library. When you create an instance of the SqlCeEngine, you need to pass a connection string formatted like so:

DataSource=”mydatabasename.sdf”; Password=’mypassword’

This method is valid, by the way, for version 3.1 or 3.5 of SSCE. The second method, available with Visual Studio 2008 and the 3.5 version of SSCE is to use LINQ to SQL. When creating the DataContext object, you also need a connection string formatted like so:

Data Source=mydatabasename.sdf; Password=’mypassword’

Note very carefully the two differences. First, the name of the sdf file lacks the double quote marks in the LINQ to SQL version. Second, note the Data Source phrase has a space between the words in the LINQ version, where the SqlCeEngine version lacks the space.

It’s a small distinction, but it’ll drive you nuts if you don’t catch it. I drove myself nuts for quite a while because I didn’t notice the extra space in Data Source when I began experimenting with LINQ to SQL! Hopefully my pain will save others some hair pulling.

Getting Started with SQL Server Compact Edition 3.5

Tonight I will be presenting “Getting Started with SQL Server Compact Edition 3.5″ at the Bug.Net users group. If you go to my Arcane Lessons page and scroll down just a little, you will find a section called “Getting Started with SQL Server 2005 Compact Edition”. The subjects referenced there are still valid under Visual Studio 2008 / SQL Server Compact Edition 3.5.

However, there are some new features that make it worth our while to give SSCE 3.5 a second look. For example, did you know you can access Compact Edition using LINQ to SQL? My updated presentation and code demo will show you how.

Speaking of which, you can find my PowerPoint slides and Code Demos at the new Microsoft Code Gallery site I’ve setup:

http://code.msdn.microsoft.com/ssce

Over the coming days I will also be adding blog posts to talk about the new features in version 3.5, and how to access SSCE from LINQ to SQL.

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