5 Simple Techniques For dapper tutorial for beginners

5 Simple Techniques For dapper tutorial for beginners

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Ahead of applying Dapper inside our task, we must get ready a databases and create a new World wide web API undertaking. So, Allow’s start with the databases.

We inject the IConfiguration interface to help entry to the relationship string from our appsettings.json file. Also, we create the CreateConnection method, which returns a fresh SQLConnection object. For this to operate, we need to incorporate quite a few applying statements:

Hey Reader, You could have observed the latest blog post from Jimmy Bogard (creator of MediatR and AutoMapper) saying that these libraries are going industrial. And to be distinct, I fully guidance that. Time is funds, and supporting All your family members generally will come very first.

Dapper.NET even now features major advantages, especially in phrases of general performance and Manage. Will check out Dappet.Internet in forthcoming content earning a straightforward CRUD application and looking out at positives and negatives of it.

Execute – an extension method that we use to execute a command 1 or several moments and return the number of affected rows

After we get numerous results Within the multi variable, we will extract both final results (corporation and personnel for every that organization) by utilizing the ReadSignleOrDefaultAsync and ReadAsync techniques. The main approach returns just one end result, although the next returns a collection.

Listed here, we make a variable which contains a method identify in addition to a dynamic parameter object with an individual parameter inside of. Because our stored treatment returns a worth, we utilize the QueryFirstOrDefaultAsync technique to execute it.

At the time Dapper is enabled you may change the Language fall right down to C# Program, map question final results to C# courses, and use the .Dump() process to inspect the results:

As you could see, our question variable incorporates two Find statements. The first will return only one company, and the 2nd a person will return all the workers of that enterprise. Following that, we develop a link then use that link to get in touch with the QueryMultipleAsync strategy.

QuerySingle – an extension strategy that executes a query and maps the result. It throws an exception when there is not particularly just one aspect while in the sequence

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It is among the swiftest and easiest all over, but it dapper tutorial for beginners is vitally extensible and, previously mentioned all, perfectly adopted and Utilized in extremely higher-general performance Internet sites. Extra particularly has actually been created and is also managed by the fellows behind StackOverflow, so you're able to make certain it is battle-tested. Source code is on GitHub

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Simplicity: Dapper provides a straightforward and intuitive API for executing queries and mapping final results. It enables you to write SQL queries specifically, giving you entire control about your database interactions.