Before applying Dapper within our venture, we have to get ready a database and create a new World-wide-web API project. So, Permit’s get started with the database.
Utilizing the QueryMultipleAsync() system, we can easily execute numerous SQL statements and return numerous leads to only one query. Permit’s see how to do this using an case in point.
The above mentioned code is quite simple to be aware of, here We now have additional a databases connection string into a variable referred to as myCS. Up coming We now have assigned a variable sql a database insert query.
Dynamic Parameters are especially ideal for complicated saved technique, in the event you need to have take care of also a return value:
As claimed from the subtitle, in this post I’ll deal with the basic principles of Dapper .NET, and all it will require for getting informed about it are merely 10 samples I've produced and posted on GitHub, listed here:
Now, if we simply call this technique and pass an organization for development to it, it can make a new entity for us. But, while making API’s Submit action, it is an efficient exercise to return a connection, which the API’s users can use to navigate towards the produced entity.
We’ll show you just the repository method exactly where we put into action transactions. All the rest is quite straightforward as we repeated the actions a number of occasions in this post:
by default. If you would like have Command on how strings are passed to the database, You will need to use the DBString course:
On this page, we’ll find out how to utilize Dapper within the ASP.Web Core Internet API challenge. We’ll look at Dapper Total, how you can use distinctive queries and executions, tips on how to execute stored treatments, and how to build a number of queries inside a transaction.
Some notes listed here. Given that we don’t have any enterprise logic, we are not developing a support layer to wrap our repository layer. For this type of software, the provider layer would contact repository methods and very little far more, adding an avoidable amount of complexity to the short article. Needless to say, we always propose using the assistance layer in greater-scale purposes.
Lightweight: Dapper is a light-weight library with minimal dependencies. It doesn’t impose any intricate configuration or set up, which makes it very easy to combine into your initiatives.
Transactions are really very simple to employ with Dapper. We can easily execute it utilizing the Dapper library (the just one we by now use) or perhaps the Dappr.Transaction library, which is similar point as Dapper, just With all the extended IDbConnection interface. Inside our illustration, we are going to utilize the Dapper library.
This method is nearly similar to the earlier a person, but with a single exception because we're utilizing the QuerySingleOrDefaultAsync technique listed here and supply an anonymous object as the next argument.
This process executes a query that doesn’t return any resultset. Its return value contains that range of rows influenced with the query. If the executed actually generates a resultset, that should be discarded.
Simplicity: Dapper provides a simple and dapper tutorial for beginners intuitive API for executing queries and mapping results. It helps you to compose SQL queries right, giving you comprehensive Handle more than your database interactions.