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3]. Main design models of the LINQ framework At this point, we seem to be able to see the principle of LINQ. It is not an air garden, it has a foundation. With the support of a series of new features above, Microsoft builds a large-scale extension method to ensure that the above features can interact with each other and form a natural Integrated Query framework. The above features are all enhancements mad

Cause Recently, I 've seen comments about "LINQ is dead" and "playing with it", and even some cool people say"ProgramDevelopment will eventually return to the Local MachineCode", Do not say whether these comments are correct, and first let's take a look at your amazing comments. The following is only an excerpt: Remark 1 I think there are quite a few people in the garden who have learned and written a seriesArticle Ah ~~ What's the sorrow of prog

Label:DataContextDataContext, as the main entry point for the LINQ to SQL framework, provides us with methods and properties that illustrate several typical applications of DataContext in several examples.Creating and Deleting databasesThe CreateDatabase method is used to create a database on the server.The DeleteDatabase method is used to delete the database identified by the DataContext connection string. The name of the database is defined in the f

1.1linq execution expression Before reading this article, I assume that you have some theoretical knowledge of my previous analysis, because the content of this chapter is based on a series of previous knowledge points, to ensure your reading is successful, we recommend that you read the first few articles in your own series of LINQ or you have a deep knowledge system on the principles of LINQ to prevent y

We will continue to explain the LINQ to SQL statements. In this article, we will discuss the Insert, Update, and Delete operations. This is the most common in our program. Let's look at the example.Insert/Update/Delete operation Insert (Insert) 1. Simple Form Note: A new object is added to the corresponding set using the InsertOnSubmit method and submitted to the database using SubmitChanges. NorthwindDataContext db = new NorthwindDataContext();var ne

We previously wroteProgramWhen it comes to paging on the Database End, it is generally difficult to implement it. Especially for SQL 2000 databases, you need to write a bunch of SQL statements or write a stored procedure or something yourself. Now, if you use the LINQ query syntax in vs2008, it will become super simple for developers. At the course introduced by LINQ last Friday (November 20), we discusse

A data sheet with 476550 of data. Use one of these fields to group, and then sort by that field. This requirement is implemented using LINQ to SQL and Non-linq, and then look at the performance comparison.LinQ to from inch context. Part_partgroup p by P.functiongroup into Groupedps groupedps.keySelect GroupedpsLinQ on-the-loop for groupNon-linq var results = ne

Data Operations So easy-LINQ parsing, soeasy-linq 1. What is LINQ? The abbreviation of Language Integrated Query is "Language Integrated Query. To provide a unified query method that spans various data sources, the proposed method mainly includes four components: LINQ to Objects, L