With this portion, we're going to make a basic repository sample. We’ll ensure it is simple due to the fact this text is about Dapper.

Develop an entity or product class of Consumer sort, this entity is going to be mapped to The shoppers table inside the database.

QueryMultiple – an extension system that executes multiple queries inside the similar command and maps outcomes

Dynamic Parameters are Particularly ideal for sophisticated saved technique, in the event you need to have manage also a return value:

As claimed in the subtitle, in this article I’ll concentrate on the basics of Dapper .NET, and all it's going to take to acquire aware of it are only 10 samples I have produced and posted on GitHub, right here:

Web programs, focusing on Uncooked efficiency while protecting the simplicity of your respective code. Dapper extends the IDbConnection interface with additional ways to execute SQL instructions and query details.

As you are able to see, as soon as we stop applying our link, we must dispose of it. As soon as we make a link, we are able to utilize it to simply call the QueryAsync strategy and pass the query being an argument. Considering that the QueryAsync() system returns IEnumerable, we convert it to an inventory the moment we wish to return a end result.

After Dapper is enabled it is possible to change the Language drop all the way down to C# Software, map query results to C# courses, and use the .Dump() process to examine the outcomes:

As you could see, our question variable incorporates two SELECT statements. The initial will return one corporation, and the 2nd just one will return all the workers of that corporation. Following that, we produce a connection after which use that link to get in touch with the QueryMultipleAsync strategy.

We’ll also produce a dapper tutorial for beginners basic repository layer to wrap the logic up to stay away from applying Dapper queries directly Within the controller.

Executes a query and maps the result to a summary of dynamic objects or, if specified, to a listing of strongly typed objects:

Your browser isn’t supported any longer. Update it to have the ideal YouTube practical experience and our hottest options. Find out more

This methods executes a question that return a resultset made from just a person row and one particular column. Just like the fantastic old IDBCommand.ExecuteScalar.

This technique executes a question that doesn’t return any resultset. Its return worth consists of that quantity of rows affected via the question. In case the executed in fact generates a resultset, that can be discarded.

Your browser isn’t supported any longer. Update it to obtain the greatest YouTube encounter and our newest features. Find out more