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The design is a set of courses to connect with the database. Now let us add an entity course Customer from the Model folder.
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Dapper is a light-weight, high-functionality data accessibility Device crafted from the Stack Overflow staff. It offers a minimalist method of data accessibility layer in .
Execute – an extension strategy that we use to execute a command 1 or a number of moments and return the quantity of impacted rows
QuerySingleOrDefault – executes a question and maps the result or a default price When the sequence is vacant. It throws an exception if there is multiple component during the sequence
Below, we make a variable that contains a treatment identify along with a dynamic parameter item with only one parameter inside. Due to the fact our saved procedure returns a value, we make use of the QueryFirstOrDefaultAsync method to execute it.
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As you could see, our question variable contains two Pick statements. The initial will return a single business, and the next one particular will return all the staff of that company. Following that, we develop a relationship after which use that connection to get in touch with the QueryMultipleAsync system.
We’ll also create a simple repository layer to wrap the logic up to prevent making use of Dapper queries right Within the controller.
Now you do have a totally useful API which can interact with a SQL Server databases using Dapper. You understand how to fetch knowledge from the database, insert new data, update existing types, and delete records you no more will need.
Next up, you’ll see how to determine a link for the SQL Server using a link string inside the appsettings.json. From there, we’ll publish the code that interacts with our database, sending queries via Dapper to execute the CRUD operations.
Today, many of the properties from the Company class contain the similar names as being the columns within the Companies desk. But what would take place if These don’t match?
This technique executes a query that doesn’t return any resultset. Its return benefit has that quantity of rows affected by the query. dapper tutorial for beginners Should the executed truly generates a resultset, that should be discarded.
Simplicity: Dapper delivers a simple and intuitive API for executing queries and mapping outcomes. It permits you to write SQL queries right, supplying you with comprehensive Regulate in excess of your databases interactions.