entity framework query tutorial

The purpose of this tutorial is to explain how to use the Microsoft Entity Framework to create a data access class when you create an ASP. NET MVC application. This tutorial assumes that you have no prior knowledge of the Microsoft Entity

The purpose of this tutorial is to explain how to use the Microsoft Entity Framework to create a data access class when you create an ASP. NET MVC application. This tutorial assumes that you have no prior knowledge of the Microsoft Entity

Findstudentbyid (stringID) {//Way 1:linq to EF//query student based on ID and get a single entity in the collection varStu = ( fromSinchstuentities.studentwhereS.studentid = =IDSelects). Singleordefault (); //Way 2:entity SQL stringsql ="Select Value c from Testdataentities.student as C"; ObjectQuery(SQL); Objectresultquery.

How to Use the Python web. py framework to implement a Django-like ORM query tutorial This article mainly introduces the web using Python. the py framework implements a query tutorial similar to Django's ORM. The integrated ORM op

The original purpose of the translation and why choose the Entity Framework 6 Recipes to learn, please see the beginning of this series2-10 Table per Hierarchy inheritance modelingProblemYou have a database table that has a type or identification column. It can tell what the data in the row represents in your application. You want to model using table per hierarchy (TPH) inheritance mapping.Solution Solutio

This article mainly introduces the web using Python. the py framework implements a query tutorial similar to Django's ORM. the integrated ORM operation database has always been one of the most powerful functions of Python. This article will discuss how to use it on the web. for more information about the implementation of the py

This article introduces a tutorial on using Python's web.py framework to implement a Django-like ORM query, and the integrated ORM Operations database has always been one of Python's most powerful features, and this article explores how to implement it in the web.py framework, and the friends you need can refer to the

Use the Python web. py framework to implement a query tutorial similar to Django's ORM, web. pydjango Query objects in Django The Django framework comes with an ORM that provides powerful and convenient query functions. These func

From Zhang Ziyang http://www.cnblogs.com/JimmyZhang/archive/2009/05/18/1459326.html The purpose of this tutorial is to explain how to create an ASP. net mvc application.ProgramHow to use Microsoft Entity Framework to create a data entity class. This tutorial assumes that y

or view name, stored procedure name, or the parameters they require. You do not need to create the objects used to connect to the database, do not care about the structure of the returned data, and then use the code to convert them into objects. You only need to work with the conceptual model and code model entity classes. When you do this in the scope of EF, when EF is running, it processes database connections, database command generation,

compiled into the command tree sent to storage. The Entity Framework processes the downward conversion from the Entity SQL of the conceptual model to the storage. Classes in entityclient are similar to those in common ADO. net providers. For example, if you use the entitycommand object to execute the entityclient query