5 Simple Techniques For dapper tutorial for beginners

The first thing we are going to do is to create a new Dto folder, and inside of it, a completely new CompanyForCreationDto course that we are going to use for your Put up ask for:

Develop an entity or model class of Consumer kind, this entity will likely be mapped to The shoppers table in the databases.

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

Dapper is a light-weight, high-functionality data accessibility Resource crafted through the Stack Overflow staff. It offers a minimalist method of data accessibility layer in .

One crucial Observe: If you want the write-up to date, then it's possible it might help all the more that you should recognize that we updated our Net API High quality version with A different reward ebook known as ASP.

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

As it is possible to see, when we end utilizing our link, we must eliminate it. When we create a link, we are able to utilize it to phone the QueryAsync process and move the query as an argument. Because the QueryAsync() method returns IEnumerable, we change it to a list the moment we wish to return a end result.

In a very past case in point, we made use of two SQL statements to return two success after which you can sign up for them alongside one another in only one item. But normally, for these kinds of queries, we don’t want to write down two SQL statements.

QueryFirstOrDefault – we use this technique to execute a question and map the very first end result or simply a default value In the event the sequence incorporates no elements

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

Transactions are really very simple to employ with Dapper. We can easily execute it utilizing the Dapper library (the one particular we presently use) or even the Dappr.Transaction library, which is the same detail as Dapper, just Along with the extended IDbConnection interface. In our case in point, we're going to use the Dapper library.

This process is sort of the same as the preceding one, but with one particular exception simply because we have been utilizing the QuerySingleOrDefaultAsync technique below and supply an anonymous object as the next argument.

What is actually your expertise with Dapper? Can it be your goto Device in the jobs or would you relatively use Entity Framework or another thing?

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