net entity framework oracle

Following the previous MVC Entity Framework (1)-the development environment, it has not been updated for a long time. Next, take a look at how to separate the controller in MVC into a class library and then reference it in a Web project. Also, by the way, try to split the entity class in models into a separate class library.1. Controller Class Library Project① a

Statement: If you think the layout here is uncomfortable: We suggest you read here: how to update a field in the Table in Entity Framework Generally, you may find that EF updates the values of a certain column in a database. Basically, we use table and view to directly update the entire entity. For example: We update an object user (including the field ID, first

Open Source Entity Mapping Framework Emitmapper Introduction Review Emitmapper is an open source entity mapping Framework, Address: http://emitmapper.codeplex.com/. Emitmapper mapping efficiency is relatively high, close to hard coding. Emitmapper uses emit mode to generate IL dynamically at runtime, whil

5. Filter overrides You can get Themore details from Microsoft msdnhttp://www.asp.net/visual-studio/ OVERVIEW/2013/RELEASE-NOTES#TOC10 Layout support: Supports only Master Page in MVC2. Supports notonlymaster page but also Layout page in MVC 3 and MVC4. Validation: Client-side Validation and asynchronous controllers are there in MVC2. Unobtrusive Ajax and Client side Validation, Jquery Validation and JSON binding support are in MVC3. Client side validation, Jquery validation an

This document is mainly introduced. NET development of two new technologies,. NET Platform Language Integration query technology-LINQ, and ado.net new data access layer design technology ado.net Entity Framework. Ado. NET's LINQ to entity section is based on LINQ, First intr

Disclaimer: This article focuses onEF5+,Visual Studio 2012 + Spatial Data Type (Spatial Data Types) Is inEF5Introduced in, there are two types of spatial data: Geography(Geographic)-stores elliptical data, suchGPSThe longitude and latitude coordinates; Geometry(Ry)-represents the coordinate system of the Euclidean ry (plane. 　　 The following example shows an application of this data type. Create a C # console application BelieveConsoleAll should be created and namedSpatialCodeFirst Use Code

ProblemYou have an object that gets through WCF and you want to remove itSolution SolutionsYou have the following model　　Our model represents the payment payment on the invoice invoice. In our application, we implemented a WCF service that handles database interactions from the client. In our case, we want to use the service to delete a payment object entity.To keep the solution as simple as possible, we will build a WCF service library and define the model in the following steps:1. Create a new

This section briefly introducesObjectcontext, Objectquery,Objectstateentry,ObjectstatemanagerThese important classes are all located under the system. data. Data. entity. dll namespace system. Data. Objects. In subsequent chapters, we often use some of their methods to accomplish some of our operations or purposes. In this section, we will briefly describe the methods of various classes that we may use in the future to facilitate our subsequent study.

ing between the table fields and object attribute names is the same and case-insensitive. When an object has a base class and defines the property ing (for example, the Id attribute) in the base class, the data table fields must be moved to the base class, you need to change the corresponding column of the database table to the same name as the attribute of the base class. (I have not studied any other solutions here. If you have any questions, please let us know.) from another perspective, use

(representing the relationship between orders and customers) an order object has the following attributes (the order owner and the order attributes, and their attribute types are naturally two objects ). /// Describe the customer of the order through the "place order" object. For convenience, you can add a "get customer" method in the order class, which is implemented through the "order" object set. The "Order List" attribute you added to the customer class is also completed by querying the "

Entity Framwork (Solid framework. Abbreviation EF) This is the ORM (Object relational Mapping. Object mapping Relationship) a solution.The table mapping for EF is an entity. and encapsulates the method of operation. Easy for developers to manipulate the database directly.EF has three development models. Each is:Database First: Maps the tables in an existing dat