Bob Tabor from www.LearnVisualStudio.net has created several beginner series for aspiring developers to learn programming languages in Visual Basic, C#, HTML5 & CSS3, JavaScript and how to build apps for Windows. Free C# video tutorial for beginners, and experienced programmers. This is a 100 part video series. 22 hours of c# tutorials, which start from the very basics and covers advanced concepts as we progress. Software training is. In the first part of the tutorial series we got a glimpse of MVC. In this part we’ll focus on the practical implementation of MVC Pattern. I don’t need to explain about theory of MVC as we have already covered this in the. An Absolute Beginner's Tutorial for understanding Entity Framework's Code First Approach in ASP.NET MVC. Release history; Date Version; 10 December 2007: ASP.NET MVC CTP: 13 March 2009: ASP.NET MVC 1.0: 16 December 2009: ASP.NET MVC 2 RC: 4 February 2010: ASP.NET MVC 2 RC 2: 10 March 2010: ASP.NET MVC 2: 6 October 2010: ASP.NET. An Absolute Beginner's Tutorial for understanding Entity Framework's Code First Approach in ASP. NET MVCIn this article we will discuss about entity framework code first approach. Introduction. In this article we will discuss about entity framework code first approach. We will see what are the benefits of code first approach. We will also create a sample. ASP. NET MVC application using code first approach. Background. Before starting this article we need to understand the shift in the way the modern applications are being architectured. Traditionally we have been designing and. Data Driven Design). What this means is that we used to think about what data is required to fulfill our business needs and then we build our software bottom up. This approach is still being followed for many applications and for such applications we should use the Entity framework database first approach. The alternative way of designing or architecturing our application is by using Domain centric approach(Domain Driven Design). Here I will explain asp.net mvc 4 razor tutorial with example for beginners. In this I will show you how to create a MVC 4 project using razor as a view engine before that we will learn what is mvc in asp.net. In this approach we think in terms of entities and models. Now if some of these models need persistence we can keep them in a database or any data store. In this approach we design our. In other words we create persistent ignorant models and write persistence logic separately. Entity framework code first approach. Domain centric approach and then they can be persisted later. So Entity framework code first approach enables us to write Plain Old CLR Objects(POCOs) for our models and then let us persist them in a data store by defining a Db. Mvc 4 Tutorial For Beginners In Net C# Pdf Book
Context class for our model classes. So the article only contains the introductory information. This article will not be discussing the advanced topics and best practices related to code first approach. Using the code. Let us try to understand how we can implement the code first approach by creating a small toy application. The application that we will be creating is a small books information website which will. Show a list of books. One for Book and another for the Reviews. To get started lets go ahead and add a nuget package reference to the Entity framework. Now we are all set to start work on our application. Creating the POCOs. Let us now go ahead and create these models without worrying about the persistence. Book. . But there are few things which we have not done so far. There is a one to many relationship. So we need to take that into account for our models. Also, If we want to hint the database generation module about the persistence information like table names, key columns etc. So with these changes our model classes will look like. Next we need to create a DBContext object that will be responsible for performing all the CRUD operations on these models. Let us go ahead and. DBContext class for these models. Books. Db. Context : Db. Context. . Setting the database and location Now with the Db. Context class ready the. Since ages, we have been using Connection. Strings to specify the connection to the database. In this case also we can use Connection. String. too to specify the location and meta data of the database that the Db. Context class should use. Let us see if we need to create the database in the App. If we keep the name of the connection. String same as the Db. Context class the. Db. Context class will use the connection. String to persist the data. This is on the lines of . But this is also flexible so that we have the possiblity of giving custom. Strings i. e. If we need to give any other name to the connection. String or use some. String with the Db. Context class then we need to pass the connection. String name in the base class constructor of our Db. Context class. Testing the Code first Models and Context. To test the above defined models let us create a simple ASP. NET MVC controller that will perform the CRUD operations on the Book entity. Let try to run this application. On first run. it will now show any data but it will create a new database at the location specified in the connection. String. Create a new Book Entry Details of selected Book Edit a Book entry Delete a Book List of Books Managing enitity relationships - Adding Book Reviews. Let us modify the Book details view to show all the reviews associated with the book too. And now we will create a controller for reviews to add the reviews to a book. For now let us only implement the Create method in this controller. Reviews. Controller : Controller. Now we have a simple application containing two entities with 1 to many relationship persisting the data in a database using the Entity framework code first approach. Note: Before building the sample project, open the nuget package manager and restore the missing packages. Point of interest This article was written for the absolute beginner's who have no idea about the code first approach. This article presents the reader with some introductory notes on what is code first approach and. ASP. NET MVC application with code first approach. What we have not talked about in this article but is still very important for this topic is the updation of database schema. Note: We have not used any patterns like repository and unit of work in this article since the main idea of the article was to introduce the reader to the code first approach of. Most experiences programmer will find this article very basic and not much helpful. But I hope this has been informative to all the absolute beginner's to Entity framework code first. History 1. 8 November 2.
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