Right before employing Dapper in our challenge, we must prepare a databases and create a new Website API venture. So, Enable’s begin with the databases.
We inject the IConfiguration interface to empower entry to the relationship string from our appsettings.json file. Also, we create the CreateConnection approach, which returns a different SQLConnection item. For this to operate, we have to include many applying statements:
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Now, we are going to cope with a Publish ask for within our API and make use of the ExecuteAsync process to create a new corporation entity within the database.
1 vital Be aware: If you prefer the report so far, then perhaps it may help even more for you to realize that we current our Web API Top quality edition with One more reward reserve called ASP.
Now, if we contact this process and move a corporation for generation to it, it'll produce a new entity for us. But, even though building API’s Publish action, it is an effective follow to return a url, which the API’s buyers can use to navigate to the produced entity.
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QueryFirstOrDefault – we use this technique to execute a question and map the initial final result or perhaps a default price if the sequence includes no elements
We’ll also make a very simple repository layer to wrap the logic up to avoid making use of Dapper queries immediately Within the controller.
Now, we need to determine the relationship string of our databases, making sure that the appliance can connect to our Databases for undertaking CRUD functions. Open up the appsettings.json file in the Dapper.WebApi Project and increase the next
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If you need to simulate an error and take a look at that no rows are going to be developed within the databases, you could throw an exception underneath the await code line. You will discover no new rows in the Companies table.
If you'd like to learn more about why we use this DTO (and we are going to use One more 1 for your Update action), you'll be able to go through our ASP.NET Main Internet API number of posts, where we explain the reason at the rear of this (articles or blog posts 5 and 6 from the series).
When speaking about these extension methods, we have to say that Dapper supports synchronous dapper tutorial for beginners and asynchronous technique executions. We’ll use the asynchronous version of These strategies.