TagHelper not invoking ViewComponent in ASPNET CORE MVC project RRS feed

  • Question

  • I'm in the process of getting to grips with ASPNET CORE [version 1.1, using VS2017 Community, version 15.1 (26403.3)]I've created a working ViewComponent called UserDetails (abbreviated below):

    namespace AdminConsole.ViewComponents
    [ViewComponent(Name = "UserDetails")]
    public class UserDetailsViewComponent : ViewComponent
    { ...does stuff... }

    and I can invoke it successfully in a view by using

    @await Component.InvokeAsync("UserDetails")

    I'd rather invoke it by using a TagHelper, but it just ain't happening. I've trawled through StackOverflow and other helpful pages, and whilst others seem to get it to work, I can't.

    I've added the line @addTagHelper "*, AdminConsole" in _ViewImports.cshtml and <vc:user-details></vc:user-details> in the view I want to render the VC in, and it does not render; I don't get an error, it just doesn't render.

    If I change the TagHelper declaration to @addTagHelper *, AdminConsole (without the speech marks) it also does not render or error.

    If I try both combinations as above and try <vc:UserDetails></vc:UserDetails> i.e. without the kebab-case, it does not render or error.

    My _ViewImports.cshtml is as follows

    @using AdminConsole
    @using AdminConsole.Models
    @using AdminConsole.Models.AccountViewModels
    @using AdminConsole.Models.ManageViewModels
    @using Microsoft.AspNetCore.Identity
    @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
    @inject Microsoft.ApplicationInsights.Extensibility.TelemetryConfiguration TelemetryConfiguration
    @addTagHelper "*, AdminConsole"

    Using the full namespace for the VC in the @addTagHelper declaration (AdminConsole.ViewComponents) produces a cannot resolve TagHelper error.

    I think I've tried all permutations, and documentation from official and community sources only suggest what I've tried (and differ!). I would be very grateful if someone could help shed some light.

    • Edited by Manx Tim Friday, May 5, 2017 1:41 PM formatting
    • Moved by CoolDadTx Friday, May 5, 2017 2:37 PM ASP.NET related
    Friday, May 5, 2017 1:37 PM

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