I am in the process of writing a sitemap control, and I have hit an issue I am trying to use UmbracoHelper, by injecting it in to a customer control. Without UmbracoHelper in the control constructor the control works, but when I add it to the constructor it falls over.

I am using the same code as in the back office and there it works, but on a publicly facing control all I seem to get are errors.

Here the code:

* * Public Sitemap contoler. */ using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Mvc.Infrastructure; using Microsoft.AspNetCore.Mvc.Routing; using Umbraco.Cms.Core.Models.PublishedContent; using Umbraco.Cms.Web.Common; using Microsoft.AspNetCore.Hosting; using System.Text; using emeraldshardlib; using emeraldseositemap.Libs; using Microsoft.Extensions.Logging; using Umbraco.Cms.Core.Services; using System.Collections.Generic; using Org.BouncyCastle.Bcpg.OpenPgp; using System.Linq; using Umbraco.Extensions; using Microsoft.AspNetCore.Authorization; using Polly; using Umbraco.Cms.Web.Common.Authorization; using Umbraco.Cms.Web.Common.Filters;

namespace emeraldseositemap.Controller.Umbraco {

public class SiteMapController :  Microsoft.AspNetCore.Mvc.Controller
{

    //Readonly values
    private readonly IUrlHelperFactory _urlHelperFactory;
    private readonly IActionContextAccessor _actionContextAccessor;

    private readonly UmbracoHelper _umbracoHelper;

    private readonly IWebHostEnvironment _webHostEnvironment;

    //New String builder
    private StringBuilder sb = new StringBuilder();

    //Shared Function Library
    private SharedFunctions sharedFuncs;
    //Readonly values
    private readonly ILogger<SiteMapController> _logger;

    //Doamin service used to get domain!
    private readonly IDomainService _domainService;

    //Constructor
    public SiteMapController(
        IUrlHelperFactory urlHelperFactory,
        IDomainService domainService,
        IWebHostEnvironment webHostEnvironment,
        IActionContextAccessor actionContextAccessor,
        ILogger<SiteMapController> logger,
        UmbracoHelper umbracoHelper
        )
    {

        _urlHelperFactory = urlHelperFactory;
        _actionContextAccessor = actionContextAccessor;

        _umbracoHelper =   umbracoHelper;
        _webHostEnvironment = webHostEnvironment;
        _logger = logger;
        //Build new Shared Function Library. 
        sharedFuncs = new SharedFunctions(_webHostEnvironment, _urlHelperFactory, _actionContextAccessor, _logger);

        _domainService = domainService;

    }

    /*
     * Build the sitemap
     */
    [Route("/Sitemap.xml")]
    public string buildSitemap()
    {

        //Build a new object based on sitemap Library. 
        //SiteMapLib map = new SiteMapLib();
        //
        //var node = sharedFuncs.HomeNode(_domainService, _umbracoHelper);
        //
        //IPublishedContent homeNode = sharedFuncs.Home(_umbracoHelper, node);
        //
        //Add the sitemap header
        //sb.AppendLine(map.header());
        //
        //Add site map content. 
        //sb = map.ProcessNode(homeNode,sb);

        //Add sitemap footer
        //sb.AppendLine(map.footer());

        //Now return the site map.
        //return sb.ToString();

        return "testfromControl1";
    }
}

}

Any Ideas?