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; }

"ConnectionStrings": {
    "AuthConnectionString": "Server=.;Database=AspNetAuth;Trusted_Connection=True"
  }

builder.Services.AddDbContext<AuthDbContex>(options => options.UseSqlServer(builder.Configuration.GetConnectionString("AuthConnectionString")));
builder.Services.AddIdentity<IdentityUser, IdentityRole>().AddEntityFrameworkStores<AuthDbContex>();

Quote:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)