5 Simple Techniques For dapper tutorial for beginners

5 Simple Techniques For dapper tutorial for beginners

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Prior to making use of Dapper in our undertaking, we have to put together a database and create a new Net API challenge. So, Enable’s begin with the database.

Here’s a summary what you can anticipate to generally be returned by each technique in the event your query return no rows, a single row or various rows:

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Now, we are going to tackle a Put up ask for inside our API and utilize the ExecuteAsync process to produce a new firm entity during the databases.

Execute – an extension process that we use to execute a command 1 or several moments and return the quantity of afflicted rows

QuerySingleOrDefault – executes a question and maps the result or even a default value In the event the sequence is empty. It throws an exception when there is more than one ingredient from the sequence

As you can see, there's nothing new Using these two methods. We have now a query and parameters, and we execute our statements With all the ExecuteAsync technique.

#dotnet In the following paragraphs, we will understand all about Dapper in ASP.Internet Main and make a small implementation to know how it works. Enable’s not Restrict it in order to Dapper. We will Establish an application that follows a quite simple and clear architecture.

In this article, we’ll learn how to utilize Dapper from the ASP.Internet Main World-wide-web API project. We’ll discuss Dapper General, the way to use different queries and executions, how to execute saved techniques, and how to build many queries within a transaction.

QuerySingle – an extension system that executes a query and maps the result. It throws an exception if there is not just one element during the sequence

Lightweight: Dapper is a lightweight library with minimum dependencies. It doesn’t impose any elaborate configuration or set up, which makes it very easy to combine into your assignments.

This is extremely concise and clean, nevertheless it doesn’t make it possible for to specify if a parameter is surely an input or output parameter, and the information kind is inferred in the parameter style by itself. Here’s what get executed over the database:

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Below, we produce our question and also a dynamic parameters object (we're not working with an anonymous dapper tutorial for beginners item anymore). We populate that item with our three parameters and after that contact the ExecuteAsync method to execute our insert statement.

Simplicity at its Main: Dapper.Web focuses on simplicity and simplicity of use. It does not make an effort to abstract away the databases, making it possible for you to write and enhance your SQL queries directly.