Rumored Buzz on dapper tutorial for beginners

Rumored Buzz on dapper tutorial for beginners

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Before making use of Dapper inside our challenge, we have to prepare a databases and produce a new Net API project. So, Permit’s begin with the databases.

We inject the IConfiguration interface to empower usage of the connection string from our appsettings.json file. Also, we develop the CreateConnection system, which returns a brand new SQLConnection object. For this to work, we really need to insert several utilizing statements:

QueryMultiple – an extension method that executes several queries in the same command and maps outcomes

Processes incoming requests, manipulates data utilizing the design, and renders the ultimate output for that look at.

Naturally execution of stored course of action is supported. Any on the pointed out methods lets the execution of a saved method. All it’s desired will be to omit

Once we get a number of outcomes In the multi variable, we are able to extract both of those benefits (company and staff members per that corporation) by using the ReadSignleOrDefaultAsync and ReadAsync methods. The primary method returns an individual final result, although the 2nd returns a collection.

We’ll demonstrate just the repository system wherever we carry out transactions. All The remainder is very very simple as we recurring the techniques various periods in the following paragraphs:

by default. If you would like have Management on how strings are handed to the database, You will need to use the DBString course:

QueryFirstOrDefault – we use this process to execute a question and map the first outcome or maybe a default benefit When the sequence has no elements

You will find the completed supply code in this article. I hope you uncovered something new and in depth on this page. For those who have any opinions or recommendations, be sure to go away them powering from the comments area underneath. Do not overlook to share this information inside your developer Neighborhood. Thanks and Delighted Coding!

Lightweight: Dapper is a lightweight library with minimal dependencies. It doesn’t impose any complex configuration or set up, rendering it very easy to integrate into your tasks.

The ExecuteAsync system returns int Consequently, representing the number of affected rows in the databases. So, if you need that information and facts, you can use it by accepting the return price from this process.

Before we provide you with tips on how to use Dapper to call a stored method, We have now to develop one in our database:

This technique executes a question that doesn’t return any resultset. Its return worth consists of that number of rows afflicted via the query. In the event the executed really generates a resultset, that will be discarded.

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