<customErrors mode="On" defaultRedirect="error">
        <error statusCode="404" redirect="error/notfound" />
        <error statusCode="403" redirect="error/forbidden" />
</customErrors>

        public void Configure(IApplicationBuilder app)
        {
            if (env.IsDevelopment())
            {
                app.UseDatabaseErrorPage();
                app.UseDeveloperExceptionPage();
            }
            app.UseExceptionHandler("/error/index/500");
            app.UseStatusCodePagesWithReExecute("/error/index/{0}");

    public class ErrorController : Controller
    {
        private readonly ILogger<ErrorController> _logger;

        public ErrorController(ILogger<ErrorController> logger)
        {
            _logger = logger;
        }

        public IActionResult Index(int? id)
        {
            var logBuilder = new StringBuilder();

            var statusCodeReExecuteFeature = HttpContext.Features.Get<IStatusCodeReExecuteFeature>();
            logBuilder.AppendLine($"Error {id} for {Request.Method} {statusCodeReExecuteFeature?.OriginalPath ?? Request.Path.Value}{Request.QueryString.Value}\n");

            var exceptionHandlerFeature = this.HttpContext.Features.Get<IExceptionHandlerFeature>();
            if (exceptionHandlerFeature?.Error != null)
            {
                var exception = exceptionHandlerFeature.Error;
                logBuilder.AppendLine($"<h1>Exception: {exception.Message}</h1>{exception.StackTrace}");
            }

            foreach (var header in Request.Headers)
            {
                var headerValues = string.Join(",", value: header.Value);
                logBuilder.AppendLine($"{header.Key}: {headerValues}");
            }
            _logger.LogError(logBuilder.ToString());

            if (id == null)
            {
                return View("Error");
            }

            switch (id.Value)
            {
                case 401:
                case 403:
                    return View("AccessDenied");
                case 404:
                    return View("NotFound");

                default:
                    return View("Error");
            }
        }
    }

setDbInitializer();
ModelMetadataProviders.Current = new MappedMetadataProvider(Mapper.Engine.ConfigurationProvider);
var modelValidatorProvider = ModelValidatorProviders.Providers
      .Single(provider => provider is DataAnnotationsModelValidatorProvider);
ModelValidatorProviders.Providers.Remove(modelValidatorProvider);
ModelValidatorProviders.Providers.Add(new MappedValidatorProvider(Mapper.Engine.ConfigurationProvider));

 using (var ctx = new MyContext())
{
    InteractiveViews
        .SetViewCacheFactory(
            ctx, 
            new FileViewCacheFactory(@"C:\MyViews.xml"));
}

//new group
    $("#NewGroup").on('click', function () {
        var catName = 'new';// $("#appendNodeText").val();
        $.ajax({
            dataType: "json",
            type: "POST",
            url: "@Url.Action(MVC.Categories.NewCategory())",
            data: { name: catName }

        }).done(function (data) {
            alert(data);
        });
    });

var all = (from x in db.tblZones
select new
{
  RowNuber=????????????
  Code = x.xCode,
  Caption = x.xCaption,
  Comment = x.xComments,
  DT_RowId = "tr" + x.xCode.ToString(),

});