An Unbiased View of dapper tutorial for beginners

An Unbiased View of dapper tutorial for beginners

Blog Article

Just before using Dapper inside our undertaking, we have to prepare a databases and produce a new Web API challenge. So, let’s get started with the database.

Utilizing the QueryMultipleAsync() strategy, we can certainly execute many SQL statements and return many brings about one question. Allow’s see how to do that by having an instance.

The above mentioned code is quite simple to know, listed here Now we have included a databases relationship string to a variable referred to as myCS. Following We've got assigned a variable sql a database insert query.

Dynamic Parameters are Specifically perfect for complicated saved course of action, in the event you need to have manage also a return value:

We’ll use test-catch blocks in Every motion inside our controller for the instance’s sake. But to prevent code repetition, we strongly suggest examining our World wide Mistake Handling article.

Now, if we simply call this technique and pass an organization for creation to it, it can develop a new entity for us. But, though creating API’s Publish action, it is an effective follow to return a backlink, which the API’s buyers can use to navigate into the established entity.

We’ll tell you about just the repository strategy wherever we carry out transactions. All The remainder is very very simple as we recurring the ways quite a few situations on this page:

by default. If you need have Command on how strings are passed for the databases, You should use the DBString class:

With this option all is required is the fact that nameless item’s fields possess the exact title of your made use of parameters. You can utilize the “@” dapper tutorial for beginners indication also in the field title if you want or it is possible to omit it as long as, once again, the identify matches the parameter you would like to assign the value to.

We’ll also develop a very simple repository layer to wrap the logic up to avoid using Dapper queries straight inside the controller.

Lightweight: Dapper is a light-weight library with negligible dependencies. It doesn’t impose any elaborate configuration or set up, which makes it easy to integrate into your jobs.

Transactions are rather basic to work with with Dapper. We could execute it using the Dapper library (the a single we presently use) or the Dappr.Transaction library, which is similar point as Dapper, just With all the prolonged IDbConnection interface. Within our example, we're going to make use of the Dapper library.

var sql = @"pick out * from vehicles the place Id = @id1; select * from automobiles where by Id = @id2; choose * from autos where Id = @id3";

To conduct CRUD operations from the databases, we must create a reference to the database utilizing a database link.

Be part of eight,200+ Engineers who subscribe to my e-newsletter! Each and every 7 days, you are going to acquire a single practical suggestion full of most effective procedures and true-world examples to assist you to expand to be a developer.