99.02 DateTime and Currency formating issue. Validation. (Book) (Xamarin) - chempkovsky/CS2WPF-and-CS2XAMARIN GitHub Wiki

• Please take a close look at the slide below
  • Book R page
  • "Publication date"-column has a time suffix="12:00:00AM"
  • "Completion date"-column is shown without time suffix.

Let's look at the CompletionDate-field of LitManuscript-entity

 [Display(Description = "Date Of Manuscript Completion (not Required)", Name = "Completion Date", Prompt = "Enter Completion Date", ShortName = "Completion Date")]
 [DataType(DataType.Date)]
 [Required]
 public DateTime CompletionDate { get; set; }

And let's look at the PublicationDate-field of LitBook-entity

 [Display(Description = "Publication Date", Name = "Publication Date", Prompt = "Enter Publication Date", ShortName = "Publication Date")]
 public DateTime PublicationDate { get; set; }

CompletionDate-field of LitManuscript-entity has additional attribure

 [DataType(DataType.Date)]

It affects formatting!!!!!

• Please take a close look at the slide below
  • Book R page
  • "Price"-column has a Currency-prefix

And let's look at the Price-field of LitBook-entity

        [Display(Description = "Book Price", Name = "Book Price", Prompt = "Enter Book Price", ShortName = "Book Price")]
        [DataType(DataType.Currency)]
        public Double Price { get; set; }

Price-field of LitBook-entity has additional attribure

 [DataType(DataType.Currency)]

It affects formatting!!!!!

• Please navigate to Book R page
  • Please navigate to "Add Item"-page for Book
  • Please click "Submit"-button

• Please type any letter in "Title of the book"-control

android App

And let's look at the BookTitle-field of LitBook-entity

        [Display(Description = "Title of the Literary Book", Name = "Title of the Literary Book", Prompt = "Enter the title of the Literary Book", ShortName = "Book Title")]
        [Required]
        [StringLength(55, MinimumLength = 3)]
        public string BookTitle { get; set; }

We have [Required] and [StringLength] attributes

It affects validation!!!!!

• Open the file "Controllers\LitBookViewWebApiController.cs" of "Dm04WebApp"-project and Navigate to "addone"-method.
  • This is a server side validation

        [HttpPost]
        [ResponseType(typeof(LitBookView))]
        [Route("addone")]
        public IHttpActionResult addone([FromBody] LitBookView viewToAdd)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }
            ...
        }

• Open the file "Literature\LitBook\ViewModels\LitBookViewEformViewModel.cs" of "ModelServicesPrismModule"-project and Navigate to the beginning of "LitBookViewEformViewModel"-class.
  • This is a client side validation

namespace ModelServicesPrismModule.Literature.LitBook.ViewModels {
    public class LitBookViewEformViewModel: INotifyPropertyChanged, INotifyDataErrorInfo, IEformViewModelInterface, IBindingContextChanged
    {

It implements "INotifyDataErrorInfo"-interface. Xamarin 5 accepts it (We mean System.ComponentModel and all around it).