Скачать или смотреть How to Dynamically Pass Stored Procedure Parameters into Your API using C# ASP.NET Core

Learn how to effectively pass stored procedure parameters in a C- `ASP.NET Core Minimal API` environment. Explore step-by-step instructions and code examples.
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How to Dynamically Pass Stored Procedure Parameters into Your API using C- ASP.NET Core

If you’re building a web application using ASP.NET Core minimal APIs, you might encounter situations where you need to call stored procedures in your database and pass parameters to them dynamically. This can often be a source of confusion, especially considering the structure required to correctly handle these parameters. In this guide, we'll address how to effectively pass stored procedure parameters into your API dynamically, offering clear, organized instructions, and practical code examples.

The Challenge

You may find yourself in a situation where you want your web API to not only call a stored procedure but to also handle various incoming requests with different parameters. This is common in scenarios where your API needs to provide data based on user input, like a search query or filtering options.

For instance, consider the following stored procedure example:

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In this example, the stored procedure sGetSkuByStorer takes a parameter @storerkey. The goal is to dynamically pass this parameter when calling the stored procedure from your web API.

Steps to Implement the Solution

Here’s a step-by-step guide on how to implement this functionality in your ASP.NET Core minimal API:

Step 1: Setting Up the SQL Command

First, you’ll want to connect to your SQL database to retrieve the relevant stored procedures. Below is the initialization code, where you fetch the necessary data from your app_event table:

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Step 2: Mapping the GET Request

In the same context, now it’s time to map your API routes so that they can handle incoming GET requests. Make sure to include the HttpRequest object in your delegate handler to access the query parameters.

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Step 3: Handling Multiple Values for Parameters

Given that reqs.Query may represent parameters that could have multiple values, you'll want to ensure that you're accounting for this potentiality. The param.Value gives you access to the parameters passed in, which can be utilized accordingly.

For example, if an endpoint could receive multiple values for a parameter like param1=value1a&param1=value1b, you can grab the first value or handle multiple values based on your needs. Be cautious when adding these parameters to ensure your stored procedure can process them without errors.

Summary

In short, dynamically passing parameters to stored procedures in a minimal API requires careful handling of HTTP requests and SQL commands. By following the steps outlined above, you can create an effective solution that makes your API more flexible and powerful.

By integrating your stored procedures with dynamic parameters effectively, your APIs can respond to a variety of queries, making your application robust and user-friendly.

With this guide, you should be able to tackle the common pitfalls of expanding API functionality through stored procedures and become more adept at handling database interactions in your ASP.NET Core applications.