• Hartmut Maennel's Blog

    A LINQ provider for RDF files - part 2

    • 25 Comments
    For the simple Rdf queries like IQueryable < string > q = from x in rdf from y in rdf where rdf.A( germany , hasAdminDiv, x) && rdf.A(x, isOfType, germanState) && rdf.A(x, hasName, y) select y.Val + " [" + x.Val +...
  • Hartmut Maennel's Blog

    A LINQ provider for RDF files

    • 3 Comments
    The next provider I plan to upload here allows querying an RDF file. From the provider writer’s perspective there is a fundamental difference to the previous “Web page” provider: This provider uses IQueryable instead of IEnumerable and transforms .Net...
  • Hartmut Maennel's Blog

    A LINQ provider for Web queries

    • 17 Comments
    To start a series of "LINQ provider" posts, today I upload a provider sample that in some sense treats the Internet as a database: For a SQL Server database, you can make tables in a database accessible to LINQ by writing classes with attributes that...
  • Hartmut Maennel's Blog

    Workaround: Smart Tags in C# IDE do not work correctly in LINQ preview

    • 3 Comments
    In the LINQ preview (CTP May 2006), the Smart Tags functionality in the C# IDE does not work correctly. In particular, I miss the "Resolve" feature that puts in the necessary "using" statements automatically. But the good news is that it is easy to get...
  • Hartmut Maennel's Blog

    Linq CTP May 2006 is released

    • 0 Comments
    Read about it here: http://msdn.microsoft.com/netframework/future/ Or go directly to the download page: http://www.microsoft.com/downloads/details.aspx?familyid=1e902c21-340c-4d13-9f04-70eb5e3dceea&displaylang=en
  • Hartmut Maennel's Blog

    Difference between SQL and .Net Framework built in functions

    • 2 Comments
    A common problem when using different programming languages like SQL on the server and C# or VB on the client is that certain functions are almost the same, but not completely. A good example is SQL Round vs. CLR Math.Round. For example, rounding to...
  • Hartmut Maennel's Blog

    DLinq Providers

    • 1 Comments
    The last weeks I have been working on DLinq "providers". The idea is to connect with DLinq to other databases than SQL Server, so we may need to use other mechanisms to connect to the database, need to generate slightly different SQL etc. As a first experiment...
  • Hartmut Maennel's Blog

    Bio

    I joined Microsoft Germany in 1998, and moved to the Visual Studio Group in Redmond in 2000. The last two years I have been working in the C# product unit, currently in the DLinq team, and plan to blog about DLinq from time to time. The current web site...
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