Before working with Dapper within our project, we have to prepare a databases and create a new Website API task. So, let’s begin with the database.
In this article’s a summary Whatever you can expect being returned by Every process in the event your question return no rows, one row or a number of rows:
Hey Reader, You will have viewed the modern blog post from Jimmy Bogard (creator of MediatR and AutoMapper) saying that these libraries are likely business. And also to be very clear, I thoroughly assist that. Time is cash, and supporting Your loved ones usually comes to start with.
Now, we are going to take care of a POST request within our API and utilize the ExecuteAsync approach to produce a new company entity inside the databases.
Execute – an extension technique that we use to execute a command a single or various periods and return the quantity of affected rows
NET purposes, concentrating on Uncooked effectiveness although maintaining the simplicity of your respective code. Dapper extends the IDbConnection interface with further strategies to complete SQL commands and query data.
Below, we create a variable that contains a technique name plus a dynamic parameter item with a single parameter inside. Mainly because our saved process returns a price, we make use of the QueryFirstOrDefaultAsync process to execute it.
The moment Dapper is enabled it is possible to change the Language fall right down to C# Program, map question final results to C# classes, and make use of the .Dump() technique to examine the outcome:
Not surprisingly, When you've got requested Dapper to return a particular sort, such as the User in the sample code revealed in advance of, you'll have the requested item returned as opposed to “Row”.
In these tutorials, we provide a fingers-on method of the subject with action-by-move system examples that could assist you in Understanding and putting the acquired expertise into exercise.
Now you have a thoroughly functional API that could connect with a SQL Server database employing Dapper. You know how to fetch information with dapper tutorial for beginners the databases, include new data, update present ones, and delete information you no more need.
It has become the quickest and most straightforward close to, yet it's very extensible and, over all, very well adopted and used in incredibly higher-general performance Internet sites. Extra exclusively has been produced and is particularly maintained by the blokes at the rear of StackOverflow, so you can be certain it can be battle-tested. Source code is on GitHub
This procedures executes a query that return a resultset product of just one row and just one column. Just like the fantastic old IDBCommand.ExecuteScalar.
What's your expertise with Dapper? Is it your goto Instrument within your jobs or would you relatively use Entity Framework or something else?
Simplicity: Dapper gives an easy and intuitive API for executing queries and mapping effects. It enables you to create SQL queries right, supplying you with total Command above your databases interactions.