ASP.NET Core 2.0 TagHelper errors after upgrade

Question

I am getting this cryptic error after updating my ASP.NET MVC Service running in Service Fabric. After a lot of faffing around with the actual upgrade I managed to get it running on my local Service Fabric on my machine.

I am now trying to deploy it to an actual Service Fabric cluster. I am now getting errors such as:

Error RZ3501: Invalid tag helper bound property 'RouteValues' on tag helper 'Microsoft.AspNetCore.Mvc.TagHelpers.AnchorTagHelper'. 
'Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeNameAttribute.DictionaryAttributePrefix' must be null unless property type implements 'IDictionary<string, TValue>'.
(0,0): Error RZ3501: Invalid tag helper bound property 'RouteValues' on tag helper 'Microsoft.AspNetCore.Mvc.TagHelpers.FormActionTagHelper'.

Note that I have not changed any code during the upgrade of the ASP.NET MVC service to version 2.0

This is a sample of how I used TagHelpers:

@{
    IDictionary<string,string> routeData = SpecialMethodThatCalculatesRouteData();
}

<a asp-route="MyRoute" asp-all-route-data="@routeData" >

This code worked fine before the upgrade.

Has anybody stumbled upon this?

Thanks

EDIT: These are the references I have in the csproj file:

<PackageReference Include="CompressedStaticFiles" Version="1.0.3" />
<PackageReference Include="Microsoft.AspNetCore" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.0.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.0.0" />
<PackageReference Include="Microsoft.ServiceFabric" Version="5.7.198" />
<PackageReference Include="Microsoft.ServiceFabric.AspNetCore.WebListener" Version="2.7.198" />
<PackageReference Include="Microsoft.ServiceFabric.Data" Version="2.7.198" />
<PackageReference Include="Microsoft.ServiceFabric.Services" Version="2.7.198" />
<PackageReference Include="Microsoft.ServiceFabric.Services.Remoting" Version="2.7.198" />
<PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="2.0.0" />
<PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.1.1" />
<PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric.Native" Version="1.0.0-beta2" />
<PackageReference Include="NETStandard.Library.NETFramework" Version="2.0.0-preview2-25405-01" />
<PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
<PackageReference Include="React.AspNet" Version="3.1.0" />
<PackageReference Include="Microsoft.Azure.DocumentDB" Version="1.17.0" />
<PackageReference Include="Microsoft.Extensions.Caching.SqlServer" Version="2.0.0" />

EDIT: More info. I had to add these tasks to my build definition in VSTS to get the project to compile

Note that this error happens when I deploy to the live cluster through VSTS Build and Release management. If I deploy directly to the cluster from Visual Studio 2017 IDE it works fine. I cannot understand what's the difference. Could it be something related to Nuget install on the VSTS build? — ZeroOne
can you check you have package reference for TagHelpers still available after upgrade in the project file, if its available remove and see — Shiwanka Chathuranga
@ShiwankaChathuranga No, I don't have that reference. I added the references in my csporj file in the main question — ZeroOne

Graeme English Graeme English · Accepted Answer · 2017-09-27T11:25:59

0

votes

I just ran into the same problem, setting the vsts build to 'clean' seemed to resolve it.

ASP.NET Core 2.0 TagHelper errors after upgrade

3 Answers