# 数据检验

## 创建UserModel

```csharp
public class UserModel
{
    [Required]
    public int Id { get; set; }

    [Required]
    [MinLength(2)]
    [MaxLength(10)]
    public string FirstName { get; set; }

    [Required]
    [MinLength(2)]
    [MaxLength(10)]
    public string LastName { get; set; }

    [EmailAddress]
    public string Email { get; set; }

    [Phone]
    public string Phone { get; set; }

    [Url]
    public string HomePage { get; set; }

    [Range(0, 5)]
    public int NumberOfVehicles { get; set; }
}
```

## User控制器

```csharp
[HttpPost]
[AllowAnonymous]
public IActionResult Post([FromBody] UserModel user)
{
    if (ModelState.IsValid)
    {
        return Ok("Ok");
    }
    else
    {
        return BadRequest(ModelState);
    }
}
```