Asp.Net core 2.0 Mvc app error RRS feed

  • Question

  • Have an Asp.net core 1.1 Mvc app that I converted to 2.0 that includes a custom Templates/ folder.  When I attempt to add a controller w EF actions, I get the following error:

    VS 2017 update 3 new controller error

    I assume there are updated templates for core 2.0 but don't know where to find them??
    Friday, September 8, 2017 9:47 PM

All replies

  • Hi Alex,

    Welcome to the MSDN forum.

    Refer to the error message, please check this similar issue: Migration 1.1 to 2.0 : Scaffold multiple problems and try the following solution that provided by NicolasREY:

    I checked the differences, and here are the mandatory modifications:



    @using System.Collections.Generic;
    @using System.Linq;

    in addition of:

    using System.Collections.Generic;
    using System.Linq;

    So the 'header' looks like :

    @inherits Microsoft.VisualStudio.Web.CodeGeneration.Templating.RazorTemplateBase
    @using System.Collections.Generic;
    @using System.Linq;
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Threading.Tasks;
    using Microsoft.AspNetCore.Mvc;
    using Microsoft.AspNetCore.Mvc.Rendering;
    using Microsoft.EntityFrameworkCore;


    Add :

    @using System.Collections.Generic;
    @using System.Linq;

    so the 'header' looks like :

    @inherits Microsoft.VisualStudio.Web.CodeGeneration.Templating.RazorTemplateBase
    @using Microsoft.VisualStudio.Web.CodeGeneration.EntityFrameworkCore
    @using System.Collections.Generic
    @using System.Linq
    @@model @GetEnumerableTypeExpression(Model.ViewDataTypeName)

    Then make the following replacement :

    IEnumerable<PropertyMetadata> var properties = Model.ModelMetadata.Properties;

    I didn't have to change anything else to my other view templates, and I don't use other controller templates.

    If the above not works, please redirect to this appropriate forum: https://forums.asp.net/1255.aspx/1?ASP+NET+Core and start a new thread to seek for a more professional support, since our forum is to discuss the VS IDE, thank you for your understanding.

    Best regards,


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    Monday, September 11, 2017 6:18 AM