Within this section, we're going to make a very simple repository sample. We’ll enable it to be basic simply because this article is about Dapper.
Following the class generation, we could register it as a singleton company during the Startup class, If you're using .NET5:
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Dapper is a lightweight, significant-overall performance knowledge obtain tool created via the Stack Overflow team. It provides a minimalist approach to knowledge entry layer in .
Execute – an extension system that we use to execute a command just one or many situations and return the number of affected rows
Moreover, in case you are Performing within an atmosphere where you're working with an present databases or perhaps a crew that handles the databases style and design, Dapper may be perfect for you!
Here, we produce a variable which contains a procedure name and also a dynamic parameter object with a single parameter within. For the reason that our saved technique returns a worth, we use the QueryFirstOrDefaultAsync system to execute it.
You have got entire Manage around how parameters are sent into the database, as you could see from what get executed:
As you are able to see, our query variable contains two Choose dapper tutorial for beginners statements. The very first will return just one organization, and the second a single will return all the employees of that business. After that, we make a relationship and afterwards use that link to phone the QueryMultipleAsync strategy.
We’ll also make a very simple repository layer to wrap the logic up to avoid using Dapper queries straight inside the controller.
Now you have a completely purposeful API that may communicate with a SQL Server databases using Dapper. You understand how to fetch knowledge from the database, incorporate new data, update present ones, and delete records you not will need.
Up coming up, you’ll see how to ascertain a link for the SQL Server utilizing a link string inside the appsettings.json. From there, we’ll publish the code that interacts with our database, sending queries by way of Dapper to complete the CRUD operations.
Right this moment, each of the properties from the corporate class contain the identical names as the columns within the businesses table. But what would materialize if People don’t match?
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Simplicity: Dapper supplies a simple and intuitive API for executing queries and mapping success. It means that you can compose SQL queries directly, supplying you with total Command in excess of your database interactions.