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DataAnnotations with TypeScript/Angular 2

    Question

  • We have a number of Models with validation enforced via the DataAnnotation tags.  Example:

               [Required(AllowEmptyStrings = false, ErrorMessage = "Username is required")]

        public string UserName

    We are now developing a .NET Core application with Angular 2 and would like to continue to use the Models and the validation they bring.  The edits should be enforced on the "Client" as opposed to requiring a postback to get the validation errors.  Knockout has been used previously to implement this requirement.  But, I just want to use Angular 2 or TypeScript to implement the client-side edits.  Can this be done and could you please provide some examples of how to do it? 


    • Edited by DaveIII Friday, December 16, 2016 4:42 PM typo
    Friday, December 16, 2016 4:41 PM

Answers

  • Hi Dave,

    This forum is discussing Visual Studio WPF/SL Designer, Visual Studio Guidance Automation Toolkit, Developer Documentation and Help System, and Visual Studio Editor.

    Your issue is related to ASP.NET development, I think you should re-post this thread to the following site for a professional answer, thank you very much:

    https://forums.asp.net/1255.aspx/1?ASP+NET+Core

    Sincerely,

    Oscar


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    • Proposed as answer by qing__Moderator Tuesday, December 20, 2016 1:29 AM
    • Marked as answer by DaveIII Tuesday, December 20, 2016 4:33 AM
    • Unmarked as answer by DaveIII Tuesday, December 20, 2016 4:33 AM
    • Marked as answer by DaveIII Tuesday, December 20, 2016 4:33 AM
    Monday, December 19, 2016 5:22 AM
    Moderator