Test APIs without Swagger in Visual Studio 2022 using .http/.rest file

 To test APIs without Swagger in Visual Studio 2022 using .http/.rest, you can follow these steps:

1. Open Visual Studio 2022 and create a new project or open an existing one that has APIs to be tested.

2. In the Solution Explorer, right-click on the project, and select "Add" -> "New Item".

3. In the "Add New Item" dialog box, search for ".http" or ".rest" and select the appropriate template based on your requirements. If you don't see these templates, you may need to install the "Web and Cloud Tools" workload from the Visual Studio Installer.

4. Once you've added the file, you can use it to test your APIs by writing HTTP requests directly in the file. For example, you can send a GET request to an API endpoint by writing the following code:

GET https://api.example.com/products/1

5. You can also add headers, query parameters, and request body as needed. For example, you can send a POST request with a JSON payload like this:

POST https://api.example.com/products
Content-Type: application/json 
 {
  "name": "New Product",
  "description": "A new product added via REST client",
  "price": 19.99
}

6. Once you've written your requests, you can run them by clicking the "Send Request" button at the top of the file. The response will be displayed in the same file, along with the response headers and status code.

Note that while .http/.rest files can be a convenient way to test APIs, they are not a substitute for proper testing and validation in a development or production environment. It's important to thoroughly test your APIs using a variety of tools and techniques to ensure they are secure, reliable, and performant.