![]() Below is the code to generate the Database we are going to use for this tutorial. This gives you a blank window, where you can execute SQL on the table. Right-click on your new database and select New Query. Create a new database in SSMS (SQL Management Studio) Enter a Database name and finish by clicking on OK. Right-click on the Databases folder and select Create Database. Go and open up SQL Management Studio and connect to your local database (SQL Express) or a production database if you got that. The first thing we have to do is create the Database holding the data we need in this tutorial. Create the MS SQL Database and Table for products For the development, I will be using Visual Studio 2019 Community edition and a local SQL Express (MS SQL Server) with SQL Management Studio (SSMS) as my RDBMS. The application will be divided into several small projects and in the Infrastructure layer, we will be implementing Dapper in the Persistence Class Library. ![]() NET 5.0 with a Web API following Clean Architecture, Repository Pattern, and Unit Of Work. Var orderDetails = connection.Query(sql).ToList() Using (var connection = new SqlConnection(FiddleHelper.GetConnectionStringSqlServerW3Schools())) string sql = "SELECT TOP 10 * FROM OrderDetails" The below code will execute the query at the database and map the result to OrderDetail and return that as an object. If you take a look at the first line it’s easy to see that the query looks identical to the one we would execute in SSMS. Object-Relational Mapping (Concept of an ORM) Dapper example to show the ease of useīelow is an example that shows you how easy it is to use Dapper. Dapper extends the IDbConnection by providing useful extension methods to query your database. Why? The reason could be that Dappers works directly with the RAW SQL and gives it an advantage when talking performance. It’s as simple as executing an SQL query in the database – the only difference is that we are doing it outside the database and getting the result mapped to a class in our application.ĭapper was built by the nice guys at StackOverflow and is (from my experience) faster at querying data from a database compared to the performance of Entity Framework. ![]() What this means is that Dapper is helping us map the data from the result from a SQL Query to a. NET and is also referred to as the King of the C# Micro ORM in terms of speed and is virtually as fast as using a raw ADO.NET data reader. What is Dapper?ĭapper is a simple object mapper for. By the end of this tutorial, you will have a basic understanding of how Dapper works and be able to see the power of the ORM (Object-Relation Mapper). If you are not familiar with Repository Pattern and Unit of Work, then don't worry - I will show you how to put it all together and talk you through it step by step. The application will be very simple and follow a nice and clean architecture. We are going to make a small implementation with a generic repository to understand how Dapper works with a Repository Pattern. In this tutorial, I will teach you how to use Dapper with ASP.NET Core.
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