Getting My dapper tutorial for beginners To Work

Getting My dapper tutorial for beginners To Work

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This process accepts our query as being a parameter along with a Func delegate that accepts two parameters of type Company close Personnel. Within the delegate, we attempt to extract a company by its Id benefit. If it doesn’t exist, we keep it inside the currentCompany variable and increase it to your dictionary. Also, we assign all the staff to that current enterprise and return it from a Func delegate.

Here’s a summary That which you can count on to get returned by Just about every process in the event your question return no rows, just one row or multiple rows:

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Now, we're going to cope with a Put up ask for in our API and utilize the ExecuteAsync strategy to create a new enterprise entity while in the database.

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Internet programs, focusing on raw functionality although keeping the simplicity of one's code. Dapper extends the IDbConnection interface with extra ways to execute SQL commands and question data.

Now it’s time to examine our series of tutorials to cause you to master Dapper and use it confidently within your .Web applications.

The moment Dapper is enabled it is possible to change the Language fall right down to C# Program, map question final results to C# lessons, and make use of the .Dump() technique to examine the final results:

As you are able to see, our question variable is made up of two Decide on statements. The primary will return an individual firm, and the second one will return all the workers of that corporation. After that, we make a link after which use that connection to call the QueryMultipleAsync approach.

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Executes a question and maps The end result to a list of dynamic objects or, if specified, to a summary of strongly typed objects:

Transactions are pretty simple to use with Dapper. We can easily execute it utilizing the Dapper library (the a person we now use) or maybe the Dappr.Transaction library, which is similar point as Dapper, just While using the prolonged IDbConnection interface. In our example, we're going to dapper tutorial for beginners use the Dapper library.

var sql = @"decide on * from cars and trucks in which Id = @id1; pick out * from cars exactly where Id = @id2; choose * from automobiles where by Id = @id3";

To execute CRUD functions during the databases, we must set up a reference to the databases using a databases relationship.

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