HTTPPOST: Create API to add new item in the database | ASP.NET Core 5.0 Web API Tutorial

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Asp.Net Core Web API 5.0 Tutorial

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why passing controller name again in CreatedAtAction menthod?
if we dont pass controller name like "return CreatedAtAction(nameof(GetBookById), new { id = id }, booksModel)" it does not make any difference in location url

SalluBhai

How are you auto generating the id here?

vaibhavjain

we can also use EF directly for adding anything to DB if we have database scaffolded right?

gauravshinde

I am a beginner in the web api technology.

I am confused between the following code snippets.

Code snippet1:

public async Task<int> AddBook(BookModel book)
{
Book newBook = _mapper.Map<Book>(book);
await
_context.SaveChanges();
return newBook.BookId;
}
Code snippet2:

public async Task<int> AddBook(BookModel book)
{
Book newBook = _mapper.Map<Book>(book);
await _context.Books.Add(newBook);
_context.SaveChangesAsync();
return newBook.BookId;
}
I have the following questions
Q1) What is the difference between code snippet1 and code snippet2?
Q2) When should we use async and await?
Q3) What if I use async and do not use await?
Q4) What if I do not use async at all the method declaration?
Q5) In controller why should we return the ActionResult as async?

bhavyareddy

I have one error can you solve it?
error: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.)
please reply as soon as possible

vechnogamers

not understand why you still want to create the bookmodel since all the properties in the bookmodel class is same as per book class

darkshadowgks

HTTPPOST: Create API to add new item in the database | ASP.NET Core 5.0 Web API Tutorial

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