The best Side of dapper tutorial for beginners

The best Side of dapper tutorial for beginners

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Listed here’s a summary Everything you can assume to get returned by Each individual strategy in the event your question return no rows, 1 row or various rows:

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Now, we are going to tackle a Article ask for in our API and make use of the ExecuteAsync approach to make a new business entity within the databases.

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QuerySingleOrDefault – executes a question and maps The end result or simply a default benefit if the sequence is vacant. It throws an exception when there is more than one factor while in the sequence

In this article, we produce a variable which contains a process title and a dynamic parameter object with one parameter inside of. Since our saved course of action returns a value, we make use of the QueryFirstOrDefaultAsync system to execute it.

You have got whole Management about how parameters are sent for the database, as you are able to see from what dapper tutorial for beginners get executed:

As you are able to see, our query variable includes two Decide on statements. The 1st will return only one company, and the 2nd one will return all the employees of that business. After that, we make a relationship after which you can use that relationship to connect with the QueryMultipleAsync method.

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Light-weight: Dapper is a lightweight library with nominal dependencies. It doesn’t impose any intricate configuration or setup, making it easy to combine into your jobs.

Dapper.Web expects developers to possess a stable comprehension of SQL as well as the underlying databases structure

var sql = @"find * from cars the place Id = @id1; find * from vehicles where by Id = @id2; choose * from vehicles in which Id = @id3";

What's your practical experience with Dapper? Is it your goto Resource inside your initiatives or would you instead use Entity Framework or another thing?

Simplicity at its Main: Dapper.NET concentrates on simplicity and ease of use. It does not try and summary away the database, allowing you to write down and enhance your SQL queries straight.