Application can't scaffold items

Question

I created an MVC 5 application in VS 2013 Professional and then used EF 6.1 code first with an existing DB on SQL Server Express. When I try to create the views I’m using th

Answer 1

Your context class might be throwing an exception.

I was following along in the book "C# 6.0 and the .NET 4.6 Framework" and one of the last exercises of the data access layer section was to add logging. Well, I guess that blows up the scaffold wizard. Probably file permissions on sqllog.txt or HttpRuntime is not defined...who knows. When I commented all this stuff out, it worked again.

namespace AutoLotDAL.EF
{
    using System.Data.Entity;
    using System.Data.Entity.Infrastructure;
    using System.Data.Entity.Infrastructure.Interception;
    using AutoLotDAL.Interception;
    using AutoLotDAL.Models;
    using System;
    using System.Data.Entity.Core.Objects;
    using System.Web;

    public class AutoLotEntities : DbContext
    {
        //static readonly DatabaseLogger databaseLogger =
        //    new DatabaseLogger($"{HttpRuntime.AppDomainAppPath}/sqllog.txt", true);

        public AutoLotEntities()
            : base("name=AutoLotConnection")
        {
            ////DbInterception.Add(new ConsoleWriterInterceptor());
            //databaseLogger.StartLogging();
            //DbInterception.Add(databaseLogger);

            //// Interceptor code
            //var context = (this as IObjectContextAdapter).ObjectContext;
            //context.ObjectMaterialized += OnObjectMaterialized;
            //context.SavingChanges += OnSavingChanges;
        }

        //void OnObjectMaterialized(object sender,
        //    System.Data.Entity.Core.Objects.ObjectMaterializedEventArgs e)
        //{

        //}

        //void OnSavingChanges(object sender, EventArgs eventArgs)
        //{
        //    // Sender is of type ObjectContext.  Can get current and original values,
        //    // and cancel/modify the save operation as desired.
        //    var context = sender as ObjectContext;
        //    if (context == null)
        //        return;
        //    foreach (ObjectStateEntry item in
        //        context.ObjectStateManager.GetObjectStateEntries(
        //            EntityState.Modified | EntityState.Added))
        //    {
        //        // Do something important here
        //        if ((item.Entity as Inventory) != null)
        //        {
        //            var entity = (Inventory)item.Entity;
        //            if (entity.Color == "Red")
        //            {
        //                item.RejectPropertyChanges(nameof(entity.Color));
        //            }
        //        }
        //    }
        //}

        //protected override void Dispose(bool disposing)
        //{
        //    DbInterception.Remove(databaseLogger);
        //    databaseLogger.StopLogging();
        //    base.Dispose(disposing);
        //}

        public virtual DbSet CreditRisks { get; set; }
        public virtual DbSet Customers { get; set; }
        public virtual DbSet Inventory { get; set; }
        public virtual DbSet Orders { get; set; }
    }
}