using (var context = new SalesWebMvcContext()) { var product = context.Products.FirstOrDefault(p => p.Id == 1); if (product != null) { product.Name = "New Product Name"; context.Update(product); context.SaveChanges(); } }
using (var context = new SalesWebMvcContext()) { var customer = context.Customers.FirstOrDefault(c => c.Id == 1); if (customer != null) { customer.Email = "[email protected]"; context.Entry(customer).State = EntityState.Modified; context.SaveChanges(); } }In this example, the user is updating the email address of a customer with ID 1. The customer is found using LINQ query and then updated using the EntityState.Modified property of the context.Entry method. Finally, the changes are saved to the database using context.SaveChanges. The SalesWebMvcContext is part of the Microsoft.EntityFrameworkCore package library.