5 Simple Techniques For dapper tutorial for beginners

5 Simple Techniques For dapper tutorial for beginners

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Ahead of making use of Dapper in our challenge, we must get ready a database and create a new Website API job. So, let’s get started with the databases.

We inject the IConfiguration interface to empower usage of the connection string from our appsettings.json file. Also, we develop the CreateConnection system, which returns a brand new SQLConnection object. For this to work, we really need to increase several making use of statements:

We’ll show you how you can use dynamic parameters in the subsequent example, where by we’ll make a new Corporation entity in our database.

Dapper.Internet even now provides major pros, especially in conditions of general performance and control. Will check out Dappet.Internet in approaching articles or blog posts generating a simple CRUD app and searching at advantages and drawbacks of it.

Execute – an extension technique that we use to execute a command one particular or multiple occasions and return the number of impacted rows

The moment we get many benefits Within the multi variable, we are able to extract both of those benefits (organization and workers for each that firm) by using the ReadSignleOrDefaultAsync and ReadAsync methods. The initial process returns an individual result, although the 2nd returns a group.

In this article, we produce a variable which contains a procedure title and also a dynamic parameter object with an individual parameter within. Because our stored treatment returns a worth, we use the QueryFirstOrDefaultAsync approach to execute it.

general public class Employee public int Id get; established; public string Identify get; set; community int Age get; set; general public string Position get; established; community int CompanyId get; established;

public int CustomerID get; set; community string FirstName get; established; general public string LastName get; set; community string E mail get; established;

A few notes in this article. Due to the fact we don’t have any small business logic, we aren't creating a assistance layer to wrap our repository layer. For this kind of application, the company layer would phone repository strategies and dapper tutorial for beginners absolutely nothing extra, incorporating an pointless volume of complexity on the post. Certainly, we constantly recommend utilizing the service layer in much larger-scale applications.

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The ExecuteAsync method returns int Due to this fact, symbolizing the number of impacted rows from the databases. So, if you want that information and facts, You can utilize it by accepting the return price from this process.

At the moment, all of the properties from the corporate class have the similar names since the columns inside the businesses desk. But what would come about if These don’t match?

This process executes a query that doesn’t return any resultset. Its return value incorporates that range of rows influenced with the query. When the executed actually generates a resultset, that should be discarded.

Simplicity: Dapper offers a straightforward and intuitive API for executing queries and mapping effects. It lets you create SQL queries straight, supplying you with entire Manage over your databases interactions.