dapper tutorial for beginners Fundamentals Explained
dapper tutorial for beginners Fundamentals Explained
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This inserts a different record for the stock desk. Right here Now we have created all the codes in just 4 strains showing the power of Dapper.
The design is a set of classes to communicate with the database. Now let us add an entity class Customer within the Design folder.
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Processes incoming requests, manipulates information utilizing the design, and renders the final output with the watch.
Execute – an extension method that we use to execute a command 1 or several moments and return the quantity of influenced rows
Now, if we call this method and pass a business for development to it, it can make a new entity for us. But, though developing API’s Write-up motion, it is a superb observe to return a link, which the API’s customers can use to navigate towards the produced entity.
Right here, we make a variable which contains a treatment identify in addition to a dynamic parameter item with a single parameter inside of. Mainly because our saved process returns a price, we use the QueryFirstOrDefaultAsync process to execute it.
In the preceding illustration, we utilised two SQL statements to return two effects and afterwards be part of them collectively in an individual object. But generally, for such queries, we don’t want to jot down two SQL statements.
As you can see, our question variable contains two SELECT statements. The very first will return just one organization, and the second 1 will return all the employees of that business. After that, we make a relationship and afterwards use that link to get in touch with the QueryMultipleAsync approach.
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Lightweight: Dapper is a lightweight library with minimal dependencies. It doesn’t impose any complex configuration or set up, rendering it very easy to integrate into your tasks.
It is probably the fastest and easiest around, nevertheless it is very extensible and, earlier mentioned all, nicely adopted and Utilized in pretty large-general performance Internet sites. Extra especially has actually been created and is also preserved by the fellows behind StackOverflow, so you're able to make certain it is battle-tested. Supply code is on GitHub
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One particular nice attribute you have when employing nameless objects as parameters is a chance to pass an IEnumerable. This is beneficial in the event you really need to go a summary of values to be used within a IN construct: can just go an IEnumerable as parameter benefit, and the values will likely be instantly expanded to some comma-separated listing of values.
All of the aforementioned strategies supports parametric queries. Parameters are defined in queries utilizing the “@” symbol after which there are two ways that can be utilized to assign values to outlined parameters: employing nameless objects or perhaps dapper tutorial for beginners the Dapper-distinct DynamicParameter class.