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Dieser Blog ist allen VFP-Entwicklern gewidmet, die .NET und SQL Server in Ihren Applikationen einsetzen oder komplett darauf umsteigen wollen. Das inkludiert natuerlich auch .NET 3.0 Technologien wie WPF und WCF.

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Wednesday, April 12, 2006
LINQ

LINQ stehr fuer "Language Integrated Query" und ist ein neues Feature dass Entwicklern in .NET 3.0 ("Orcas") zur Verfuegung steht. Als FoxPro Programmierer kann man sich LINQ aehnlich der FoxPro DML (Data Manipulation Language) vorstellen. Also z.B. SELECT Befehle, die direkt in .NET Sprachen wie C# oder VB.NET unterstuetzt werden. Einer der grossen Unterschiede ist dass es in .NET keine Unterscheidung zwischen Daten und Objekten gibt. Das hat den Vorteil dass LINQ nicht nur SELECT Befehle ueber Daten absetzen kann, sondern auch auf beliebige Objekte. Z.B. ist es moeglich alle leeren Textboxen auf einem Formular zu selektieren. Es ist auch moeglich SELECTs direkt auf XML Dokumente anzuwenden, usw.

Ich habe unlaengst einen Artikel zu diesem Thema im CoDe Magazine veroeffentlicht. Der Artikel kann sowohl auf der CoDe Magazine Seite, sowie auch hier auf VFPConversion.de online gelesen werden:

Kuerzere Artikel zum selben Thema finden sich auch auf VFPConversion.de unter folgenden Links:

Ein interessanter Externer Artikel befasst sich mit dem XML Support in LINQ (auch bekannt als "XLINQ"):

LINQ ist eine ueberaus interessante Technologie die vor allem FoxPro Programmierern gefallen duerfte. Es ist relativ offensichtlich das viele der FoxPro Ideen in LINQ eingeflossen sind und es sich praktisch um eine Fortfuehrung einer FoxPro Tradition in .NET handelt...

 



Posted @ 8:52 PM by Egger, Markus (markus@code-magazine.com) -
Comments (14)




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