linq to mysql

Although Microsoft's ORM has many problems, there are already enough alternatives on the market, such as LLBLGen, nhib.pdf, and OpenAccess, many developers are forced to use Microsoft technologies because of the needs of their companies or customers. In contrast, it seems that most developers are convinced that the Entity Framework is not a feasible solution. So how should they respond? Steel Price chooses to forget the decline of Linq to SQL and cont

LINQ technology: solves the problem of reducing the complexity of access and integration of information data, that is, the collection access technology. Language-level INtegrated Query) C #3.0 query syntax First, let's look at a very simple LINQ query example to query numbers smaller than 5 in an int array and sort them in order of size: Class Program { Static void Main (string [] args) { Int [] arr = new i

From: http://oct01.cn/all.aspx? Id = 14 1. Create a project named "DLinq" and add a data source named "Linq To SQL". Here we use the classic Northwind database as an example and name it "NWDB. dbml. 2. Create another Project as the DAL layer and add a Table factory so that we can obtain the Table through entities. Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text; Namespa

Summary: The first article to learn about LINQ, understand what it is about, and understand the knowledge related to Kerberos and a simple examples of Kerberos. This series is my study notes, source: http://www.cnblogs.com/lovecherry/ Content: LINQ is a language Integrated Query Based on relational data. It is used to query relational data managed in the form of objects.

A newbie recently wants to learn about the Windows Phone database and find some short tutorials. Because it is in English, it is translated by the way. The English level is not good. It is estimated that there are many mistakes in the text. If you have any children's shoes that are unfortunately read, please keep in doubt about the translation quality and give me more advice.This is the original article address: Ghost. This is the first article in the "Windows Phone mango local database (sqlce)"

: What is linq? Linq can be understood as a strongly typed Query Language embedded in the C # syntax. (Note: Although linq looks similar to SQL queries, its syntax is different .) Ii. What is the role of linq?Provides a unified and symmetric way for programmers to obtain data and operation data (the data here can be XM

Language integration query (LINQ) Introduction to LINQ Query --> A query is an expression used to retrieve data from a data source. Queries are usually expressed in a special query language. Over time, people have developed different languages for various data sources, such as SQL for relational databases and XQuery for XML. Therefore, developers have to learn new query languages for each data source

Language integration query (LINQ) is a breakthrough innovation in Visual Studio 2008 and. NET Framework 3.5. It builds a bridge between the object field and the data field. The last project used LINQ, so I was eager to learn about writing in the LINQ language. below is my personal summary of the technical points that I used in the project. What I said is not go

C #2.0 the biggest improvement is generics. the biggest improvement of C #3.0 is LINQ (Language integration query ). there are three major segments in the Table: LINQ to XML and LINQ to ADO. net (LINQ to SQL, LINQ to dataset, LINQ

Read the catalogue: 1. Introduction 2. Extended LINQ to Object (Application framework with query capability) 2.1. Extending methods by adding ienumerable 2.2. By inheriting the Ienumerable 2.3. Detailed object Structure diagram 3. Implement iqueryable 3.1. Delay loading of Ienumertor 3.2. The secret of extending the extension object of the method (this iqueryable 3.3. Sub-Methods in the e

The benefits of LINQ are very obvious, not only the database access layer is really object-oriented, but also the system's permissions can be encapsulated into the database access layer.Microsoft's current stable LINQ framework is the Entity Framework 6.1, I have written a database tool MR.E, can be used to design the database structure, and the database structure into the Entity framework of the object, ca

To further deepen our understanding of Lambda expressions, We need to master a new knowledge. The Lambda Expression Tree may look very deep and hard to understand, but in fact, it is not as difficult as you think. In this article, I would like to summarize the following points. 1. Expression Tree syntax 2. convert code to data 3. Exploration Expression Tree 4. convert data to code 5. IQueryable 6. Why do I need to convert a query expression from LINQ

As a code generator and ORM tool, LINQ to SQL automatically performs many tasks for us, which can easily cause us to doubt its performance. However, there are also several tests that show that the performance of LINQ to SQL can be improved to 93% of the performance of ado.net datareader with good optimization.Therefore, I have summarized the 10 Performance Improvement points of

Document directory This book is intended for personal learning and knowledge sharing. The copyright of this book is owned by the original author. If there is any infringement, please inform me that I will handle the post immediately. Reprinting is allowed, but this copyright statement is not allowed for commercial purposes! Blog: Han xilong Introducing to Microsoft LINQ directory You do not have to learn how to fully understand the enhancements o

Language integrated query. Many people are familiar with the SQL language and it is very convenient to use it to operate the database. Now, in C #3.0, you can use the same syntax to operate various types of data, including arrays, files, and databases. As there are many things in LINQ, I want to talk about it three times. For the first time, I will mainly talk about LINQ. For the second time, I will mainly

Many people in the garden have explained their theoretical knowledge and there are also many examples on the Internet, but many examples are from prieview1. The purpose of writing this blog is to use ASP. net MVC + LINQ is used as an example project to demonstrate ASP. net MVC + LINQ has some features. I am also learning and working on it. If any of my friends finds any problems or has better implementation

Http://www.cnblogs.com/death029/archive/2011/07/23/2114877.html1. Simple form: var q = from P in Db. Products Group p by P.categoryid into G Select G; Statement Description: LINQ uses Group by to divide products by CategoryID.Description: from P in db. Products means that the product objects are taken out of the table. Group p by P.categoryid into G indicates that P is categorized by the CategoryID field. The result is named

The consortium has developed XML DOM standards. NET to support the standards of the consortium, the XmlDocument class was introduced from the 1.1 release. In my previous blog, I described how to use the XmlDocument class to manipulate XML documents. Later. NET introduced LINQ, so LINQ to XML came into being, so. NET, the XML document can be manipulated by using LINQ