ASP.NET

[Key]
public int pmId { get; set; }
[Required]
public int pmNumber { get; set; }
[Required]
[MaxLength(50)]
public string costCenter { get; set; }
[Required]
[MaxLength(15)]
public string serviceType { get; set; }
[Required]
[MaxLength(50)]
public string destination { get; set; }
[Required]
[MaxLength(50)]
public string workCenter { get; set; }
[Required]
public DateTime creationDate { get; set; }
[Display]
[Required]
public DateTime startDate { get; set; }
[Required]
public DateTime endDate { get; set; }
[Required]
[MaxLength(100)]
public string mainFileName { get; set; }
public DateTime? returnDate { get; set; }
public string? status { get; set; }
[MaxLength(100)]
public string? fileName { get; set; }
public int? uploader { get; set; }
public bool? isDownloaded { get; set; } = false;

//Navigation property
public virtual AppUser user { get; set; }
//Navigation property
public PM()
{

}

var inputElements = new PM()
            {
                pmNumber = Convert.ToInt32(adminModel.pmNumber),
                costCenter = adminModel.costCenter,
                serviceType = adminModel.serviceType,
                destination = adminModel.destination,
                workCenter = adminModel.workCenter,
                creationDate = DateTime.Now,
                startDate = DateTime.Now,
                endDate = DateTime.Now,
                mainFileName = newFileName
            };

private readonly UserManager<AppUser> _userManager;
        private readonly SignInManager<AppUser> _signInManager;
        private readonly IUserRepository _userRepository;

        public HomeController(UserManager<AppUser> userManager, SignInManager<AppUser> signInManager, IUserRepository userRepository)
        {
            _userManager = userManager;
            _signInManager = signInManager;
            _userRepository = userRepository;
        }

Quote:

InvalidOperationException: Unable to resolve service for type 'CustomizedIdentity.Repositories.IUserRepository' while attempting to activate 'CustomizedIdentity.Controllers.HomeController'.

[Required]
       [DataType(DataType.Date)]
       [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
       public DateTime creationDate { get; set; }
       [Required]
       [DataType(DataType.Time)]
       [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:HH:mm:ss}")]
       public DateTime creationTime { get; set; }