MVVM view models to one view-CodePudding

I am using MVVM here. I have one model Patient.cs and 3 view models ViewModel1, ViewModel2, ViewModel3. I now have to convert 3 view models into one model.

Can someone please let me know the best way to do it. Below is my code:

ViewModel1.cs

    public class ViewModel1 {
        [Required]
        public string? YearOfBirth { get; set; }
        [Required]
        public string? DriversLicenseId { get; set; }
        
    }

ViewModel2.cs

    public class ViewModel2
    {
        [Required]
        [StringLength(16, ErrorMessage = "First name should be 16 character or less.")]
        public string? FirstName { get; set; }
    
        [Required]
        [StringLength(16, ErrorMessage = "Last name should be 16 character or less.")]
        public string? LastName { get; set; }
    
        [Required]
        public DateTime? DateOfBirth { get; set; } 
        
    }

ViewModel3.cs

public class ViewModel3
    {
        [Required]
        public string? Address1 { get; set; }
        [Required]
        public string? City { get; set; }
        [Required]
        public string? State { get; set; }
        [Required]
        public string? ZipCode { get; set; }    
    
        
    }

Model Patient.cs

    public class Patient 
    {
       public string? FirstName { get; set; }
       public string? LastName { get; set; }
       public DateTime? DateOfBirth { get; set; }
       public Gender? Gender { get; set; }
       public string? YearOfBirth { get; set; }
       public string? DriversLicenseId { get; set; }
       public string? Address1 { get; set; }
       public string? City { get; set; }
       public string? State { get; set; }
       public string? ZipCode { get; set; } 
       public string? PaymentType { get; set; }
     }

I'm looking for some way to convert all the three view models to Patient.cs

Thanks.

CodePudding user response：

You don't use to repeat the variables

Patient.cs

public class Patient 
{
   // Constructor
   public Patient()
   {
       _viewModel1 = new ViewModel1();
       _viewModel2 = new ViewModel2();
       _viewModel3 = new ViewModel3();
   }
   public ViewModel1 _viewModel1 { get; set; }
   public ViewModel2 _viewModel2 { get; set; }
   public ViewModel3 _viewModel3 { get; set; }
}

CodePudding user response：

Create Constructor in Patient Class and Create New Models Example :

        public class Patient 
    {
       // Constructor
       public Patient()
       {
//you need create new models in Constructor
           viewModel1 = new ViewModel1();
           viewModel2 = new ViewModel2();
           viewModel3 = new ViewModel3();
       }
       public ViewModel1 viewModel1 { get; set; }
       public ViewModel2 viewModel2 { get; set; }
       public ViewModel3 viewModel3 { get; set; }
    }