[ad_1]
Hi, I have an ASP.NET Core MVC app that contains two entities: Employee and Task. The relationship between these two entities is One-to-many. The information stored for an employee is the full name, email, phone number, date of birth, and monthly salary. The task consists of a title, description, assignee(the employee assigned to work on it), and a due date. When I want to create an employee, ModelState returns me an error: "Tasks is required". because of that error I can't create an employee. Here is the code:
私が試したこと:
ASP.NET
<pre> [HttpPost] public async Task<IActionResult> Create([Bind("FullName,Email,PhoneNumber,DateOfBirth,MonthlySalary")] Employee employee) { if(ModelState.IsValid) { _context.Add(employee); await _context.SaveChangesAsync(); return RedirectToAction(nameof(Index)); } return View(employee); } [Click and drag to move]
public class Employee { public int Id { get; set; } [Required(ErrorMessage = "Enter first and last name")] [StringLength(30, ErrorMessage = "Maximum 30 characters")] [Display(Name = "Full name")] public string FullName { get; set; } [Required(ErrorMessage = "Enter your email")] [EmailAddress(ErrorMessage = "Invalid Email address")] [Display(Name = "Email")] public string Email { get; set; } [Required(ErrorMessage = "Enter a phone number")] [StringLength(20, ErrorMessage = "Maximum 20 characters")] [Display(Name = "Phone number")] public string PhoneNumber { get; set; } [Required(ErrorMessage = "Enter date of birth")] [DataType(DataType.Date), DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}")] [Display(Name = "Date of Birth")] public DateTime DateOfBirth { get; set; } [Required(ErrorMessage = "Enter the monthly salary")] [Range(30000,300000, ErrorMessage = "Salary must be in range [30000,300000]")] [Display(Name = "Monthly salary")] public int MonthlySalary { get; set; } public virtual ICollection<Task> Tasks { get; set; } } [Click and drag to move]
Does anyone know what the problem is?
解決策 1
の使用ステートメントはありますか:
C#
using System.Threading.Tasks;
私はあなたのクラスをコピーし、それを切り詰めて試しました: C# オンライン コンパイラ & インタープリタ – Replit[^]
そしてそれはコンパイルされました…
C#
using System; using System.Collections.Generic; using System.Threading.Tasks; class Program { static void Main(string[] args) { Console.WriteLine("Hello, world!"); Employee e = new Employee(); } } public class Employee { public int Id { get; set; } public virtual ICollection<Task> Tasks { get; set;} }
[ad_2]
コメント