linq storage

In this article, we'll go on to the previous article, "LINQ to SQL and Entity Framework (top)", and continue to use LINQ to SQL and the Entity Framework to practice "Interpreting queries" to learn the key features of these technologies. We are here to focus on the "LINQ" section in LINQ to SQL and the Entity Framework,

1. Create two Relational Tables, student and class tables. Students and course schedules, as shown in the example. 2. Create a form in vs2010. And writeCodeAs follows: Namespace Linqtest{ Public Partial Class Frmmanytomany: Form{ Internal Static String Sqlconstr = @" Data Source = localhost; initial catalog = lxpower; user = sa; Pwd = " ; Public Frmmanytomany (){Initializecomponent ();} PrivateVoidFrmmanytomany_load (ObjectSender, eventargs E){Binddata ();} Private Void

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

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

This series is from scottgu's blog-to-SQL series. At the invitation of this blog, this article translates scottgu's LINQ to SQL series part (1-N) Sharing learning materials is a pleasure! This article is also published on scottgu's Chinese BlogHttp://blog.joycode.com/scottgu/archive/2007/11/17/111496.aspx Over the last few months I wrote a series of blog posts that covered some of the new language features that are coming with the Visual Studio and.

performance is very good, you can optimize the performance through the stored procedure and compiled query. Note that, contrary to some outside legends, LINQ to SQL supports Object Inheritance. Although only one of the three common inheritance modes is supported, it also supports using external ing files. The main application scenarios of LINQ to Entities are for scenarios requiring flexible and more comp

performance is very good, you can optimize the performance through the stored procedure and compiled query. Note that, contrary to some outside legends, LINQ to SQL supports Object Inheritance. Although only one of the three common inheritance modes is supported, it also supports using external ing files. The main application scenarios of LINQ to entities are for scenarios requiring flexible and more comp

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

your primary key is composed of multiple columns, add these attributes. The primary key will be further introduced later. 7. isversion and updatecheck These two will not be mentioned here. There will be a large introduction later. This column feature is inherited from the abstract feature data. It inherits two attributes: 8. Name This is used when your attribute name is inconsistent with this column name. 9. Storage Sometimes, complicated busin

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