Added other CRUD Operations

Author: RahulMule

DotNetWebAPI_InMemoryDatabase/Controllers/BooksController.cs

@@ -26,6 +26,28 @@ public IActionResult AddBook(Book book)
             _books.AddBook(book);
             return Ok();
         }
+        [HttpDelete]
+        public IActionResult DeleteBook(int id) 
+        { 
+            _books.DeleteBook(id);
+            return Ok();
+        }
+        [HttpPut]
+        public IActionResult PutBook(Book book)
+        {
+            if (ModelState.IsValid) {
+                _books.UpdateBook(book);
+                return Ok();
+            } return BadRequest();
+        }
+        [HttpGet("{id}")]
+        public IActionResult GetBook(int id)
+        {
+            Book book = _books.GetBook(id);
 
+            return Ok(book);
+        }
+    
+        
     }
 }

DotNetWebAPI_InMemoryDatabase/Services/BookServices.cs

@@ -23,6 +23,16 @@ public void AddBook(Book book)
 
         }
 
+        public void DeleteBook(int bookid)
+        {
+            var book = _context.Books.FirstOrDefault(x => x.Id == bookid);
+            if (book != null)
+            {
+                _context.Books.Remove(book);
+                _context.SaveChanges();
+            }
+
+        }
 
         public IEnumerable<Book> GetAllBooks()
         {
@@ -38,5 +48,19 @@ public IEnumerable<Book> GetAllBooks()
 
         }
 
+        public Book GetBook(int bookid)
+        {
+            Book book = _context.Books.FirstOrDefault(book => book.Id == bookid);
+            if (book != null)
+            {
+                return book;
+            }return null;
+        }
+
+        public void UpdateBook(Book book)
+        {
+            _context.Update(book);
+            _context.SaveChanges(true);
+        }
     }
 }

DotNetWebAPI_InMemoryDatabase/Services/IBooks.cs

@@ -7,5 +7,8 @@ public interface IBooks
     {
         public IEnumerable<Book> GetAllBooks();
         public void AddBook(Book book);
+        public void DeleteBook(int bookid);
+        public void UpdateBook(Book book);
+        public Book GetBook(int bookid);
     }
 }