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VALIDATION - Coggle Diagram

- - - - MovieProps
        
        Nullable
      - Movie
    - - 1st
        
        Arg
        
        Movie movie
        
        Set
        
        Id, Name
        
        ReleaseDate, NumberInStock
        
        GenreId
      - 2nd
        
        NoArg
        
        Set
        
        Id = 0
    - - get {..}
      - if (Id != 0)
        
        "Edit Movie"
      - Else
        
        "New Movie"
  - - - MFViewModel(movie)
    - - Movie
      - Inside
    - - Use
      - MFViewModel()
- - - - ValidationAttribute
    - - System
      - .ComponentModel
      - .DataAnnotations
  - - - object val
      - ValidationContext valCtx
    - - (Customer)valCtx
      - .ObjectInstance
    - - if-cust.memType
        
        Unknown
        
        PayAsYouGo
        
        Return
        
        ValidationResult
        
        .Success
      - if-cust.birthdate
        
        IsNull
        
        Return
        
        new ValidationResult(..)
        
        "birthdate is required."
      - Calc-Age
        
        Today.Year -
        
        cust.BrDt.Val.Year
      - If-Age>=18
        
        Return
        
        Success
        
        Else
        
        Return
        
        new ValidationResult(..)
        
        "Msg"
- - - - Single
      - ErrorText
  - - - viewModel
- - - - Fields
    - - If-Invalid
      - Return
        
        Same
        
        View("CustForm", viewModel)
      - viewModel
        
        customer
        
        memTypes
    - - Add
        
        In-Form
      - @Html.ValidationMessage(..)
      - m => m.Customer.Field
  - - - Validation-Msg
      - color:red
    - - border: 2pxSolidRed