The best Side of dapper tutorial for beginners
The best Side of dapper tutorial for beginners
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Just before employing Dapper within our job, we must prepare a database and create a new Net API task. So, let’s start with the databases.
The design is a group of courses to interact with the databases. Now let us increase an entity class Client within the Design folder.
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It is important to recognize that Dapper is SQL Injection Risk-free because we can use parameterized queries, which we should normally do. Yet another essential detail is always that Dapper supports a number of database suppliers. It extends ADO.Internet’s IDbConnection and presents useful extension techniques to query our database. Needless to say, We have now to put in writing queries suitable with our database provider.
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After we get many final results In the multi variable, we will extract both effects (business and personnel per that firm) by utilizing the ReadSignleOrDefaultAsync and ReadAsync strategies. The first system returns a single consequence, while the second returns a group.
Right here, we develop a variable which contains a method identify and a dynamic parameter object with one parameter inside of. Since our saved procedure returns a value, we make use of the QueryFirstOrDefaultAsync system to execute it.
You have total Regulate over how parameters are despatched for the databases, as you could see from what get executed:
As it is possible to see, our question variable has two Find statements. The primary will return one corporation, and the 2nd one particular will return all the staff of that firm. After that, we produce a connection and then use that relationship to call the QueryMultipleAsync method.
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This process executes a question that doesn’t return any resultset. Its return price has that amount of rows impacted through the query. If the executed basically generates a resultset, that should be discarded.
Simplicity: Dapper gives a straightforward and intuitive API for executing queries and mapping success. It means that you can compose SQL queries straight, supplying you with entire Manage over your databases interactions.