Error after error after error

wpenberthy · February 24th, 2016, 11:53 AM

Hmm, no packages directory. That's interesting. When you start to build, do you get a dialogue box that talks about "Restoring NuGet Packages"?

Your problem with Razor will be because you do not have that .MVC package. If you do not see it as a listed option for update, try looking into the "Browse" section of the "Manage Packages for Solution" window and install it from there. Look for Microsoft.AspNet.MVC. (This will also add the Microsoft.AspNet.Razor package)

cadtools · February 24th, 2016, 12:55 PM

I went into the NuGet Package Manager, manually updated Everything (there were 19 updates hanging, so much for automatic (?!), and went through "Browse" and added everything that looked like it might help; no specific MVC packages but Browse did Microsoft.AspNet.Mvc at 5.2, I updated it to 5.2.3 as well as the associated .WebApi (also 5.2.3, possibly synchronized..). .WebPages at 3.2.3 ...

Good news is the waterfall o'errors is gone (!!). Bad news is I get this:

Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Default Role Provider could not be found.

Source Error:

Line 57: </providers>
Line 58: </profile>
Line 59: <roleManager>
Line 60: <!--
Line 61: ASP.NET Membership Role is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template

Source File: D:\Web_Programming\Beginning_ASP-dot-NET\00_My_Version_1\Rent_My_Wrox_Scott_1\Rent_My_W rox_Scott_1\web.config Line: 59

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1038.0

The error list shows:
Unexpected "foreach" keyword after "@" character. Once inside code, you do not need to prefix constructs like "foreach" with "@". Rent_My_Wrox_Scott_1 D:\Web_Programming\Beginning_ASP-dot-NET\00_My_Version_1\Rent_My_Wrox_Scott_1\Rent_My_W rox_Scott_1\Views\UserDemographics\Index.cshtml.

Index.cshtml has a foreach loop that is preceded by an @, executed by a contitional @if (Model != null):

@foreach (var item in Model) .. that goes on to do DisplayFor methods for modelItem members.

Other than that, the no-includes error-rama is gone. Major headway!

Next?

scott

wpenberthy · February 25th, 2016, 11:53 AM

Take a look through the NuGet stuff (you should, unfortunately, be an expert at that by now!) and ensure that Microsoft.AspNet.Identity.Core, Microsoft.AspNet.Identity.EntityFramework, and Microsoft.AspNet.Identity.Owin are installed in your solution.

Shaitan · February 25th, 2016, 04:16 PM

Quote:

Originally Posted by cadtools

Error CS0012 The type 'Expression<>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Rent_My_Wrox_Scott_1 D:\Web_Programming\Beginning_ASP-dot-NET\00_My_Version_1\Rent_My_Wrox_Scott_1\Rent_My_W rox_Scott_1\Views\UserDemographics\Index.cshtml

So, it appears the Razor calls are the cause of our grief..

So I am brand new to ASP (this book is teaching me) but I ran into this error in chapter 6. Googling gave me: http://stackoverflow.com/questions/3...not-referenced

After downgrading the NuGet package as mentioned in the first solution, this error vanished

I have no idea if that helps at all but since I spent the last 20 minutes figuring it out I figured it may be worth sharing.

cadtools · February 27th, 2016, 10:16 AM

Yes indeed, all 3 packages are installed, and at version 2.2.1. Would be nice to include a screen shot or attach a file with a screen shot..

wpenberthy · February 27th, 2016, 05:02 PM

I think those three packages should be at 3.0.1 or similar. Are you able to update those in our favorite Package Manager?

cadtools · February 27th, 2016, 06:39 PM

Version 2.2.1 is listed in Vs NuGet "installed" tab as the latest stable release (released April 2015).

A goolge hunt (bing under Edge gave a 404 (

)), 3.0.0-rc1-final is shown as a pre-release, Nov 18, 2015.

3.0.0 link:
https://www.nuget.org/packages/Micro...spNet.Identity

I am going back and reviewing chapters 1 thru 6 and re-building the project without the extra css, page1 page2 etc. exercises and just doing what will become the RentMyWrox application.. After I get to the end of chapter 6 (it has worked through chapter 5 without incident (!) I might try updating (and re-building, and re-starting system and VS) to 3.0.0 if I have errors after the re-coding of the assembly. That may point to what happens with 2.2.1 versus 3.0.0.
Stay Tuned..

scott

cadtools · February 27th, 2016, 08:38 PM

I did the update of the Microsoft.AspNet.Identity.xx packages to 3.0.0 -pre (supposedly removing the 2.2.3 versions) and got massive double-definition errors,after doing a clean and rebuild. I rolled those back to 2.2.3, still got a slew of errors. The I follower an earlier posters' suggestion of rolling back the Microsoft.AspNet.MVC package to 5.0.0 and IT WORKED.
The scary thing that has me distrusting Visual Studio and MVC is that 5.2.3 is listed as the "latest stable" version of that package, but the assembly will not build properly unless that package is rolled back to 5.2.0.
Anyway, I will now continue on.

scott

Allankim · July 16th, 2016, 06:35 AM

And if I run the solution one more time I get the error that the ressource was not found like it can't find the /UserDemographics/Manage.

How do you correct this error.

Regards Allan

Quote:

Originally Posted by cadtools

Index.cshtml has many Razor calls that start:
@Html.DisplayNameFor(model => model.xx) and a foreach loop setting
@Html.DisplayFor(model => item.xx)
Each call generates the following error (squiggly underline in @xx name)

Error CS0012 The type 'Expression<>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Rent_My_Wrox_Scott_1 D:\Web_Programming\Beginning_ASP-dot-NET\00_My_Version_1\Rent_My_Wrox_Scott_1\Rent_My_W rox_Scott_1\Views\UserDemographics\Index.cshtml

So, it appears the Razor calls are the cause of our grief..
Ideas? Again, the demo "Index" page from the online examples, chapter 6, works without the "create new" link working; create new generates this:

Server Error in '/' Application.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 78: @foreach (string hobby in hobbyList)
Line 79: {
Line 80: string checkedText = Model.Hobbies.Contains(hobby)
Line 81: ? "checked"
Line 82: : string.Empty;

Source File: D:\Web_Programming\Beginning_ASP-dot-NET\RentMyWrox_Chapter6_CSharp\RentMyWrox\RentMyWr ox\Views\UserDemographics\Manage.cshtml Line: 80

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
ASP._Page_Views_UserDemographics_Manage_cshtml.Exe cute() in D:\Web_Programming\Beginning_ASP-dot-NET\RentMyWrox_Chapter6_CSharp\RentMyWrox\RentMyWr ox\Views\UserDemographics\Manage.cshtml:80
System.Web.WebPages.WebPageBase.ExecutePageHierarc hy() +177
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +80
System.Web.WebPages.StartPage.RunPage() +47
System.Web.WebPages.StartPage.ExecutePageHierarchy () +71
System.Web.WebPages.WebPageBase.ExecutePageHierarc hy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +101
System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +312
System.Web.Mvc.BuildManagerCompiledView.Render(Vie wContext viewContext, TextWriter writer) +115
System.Web.Mvc.ViewResultBase.ExecuteResult(Contro llerContext context) +248
System.Web.Mvc.ControllerActionInvoker.InvokeActio nResult(ControllerContext controllerContext, ActionResult actionResult) +27
System.Web.Mvc.ControllerActionInvoker.InvokeActio nResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +58
System.Web.Mvc.ControllerActionInvoker.InvokeActio nResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +349
System.Web.Mvc.ControllerActionInvoker.InvokeActio nResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +69
System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInv okeAction>b__1c() +188
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInv okeAction>b__1e(IAsyncResult asyncResult) +124
System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndD elegate(IAsyncResult asyncResult) +27
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End( ) +58
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +30
System.Web.Mvc.Async.AsyncControllerActionInvoker. EndInvokeAction(IAsyncResult asyncResult) +29
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d( IAsyncResult asyncResult, ExecuteCoreState innerState) +27
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDel egate(IAsyncResult asyncResult) +48
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End( ) +58
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +30
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +21
System.Web.Mvc.Controller.EndExecuteCore(IAsyncRes ult asyncResult) +32
System.Web.Mvc.Controller.<BeginExecute>b__15(IAsy ncResult asyncResult, Controller controller) +26
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDel egate(IAsyncResult asyncResult) +40
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End( ) +58
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +30
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +21
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +29
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAs yncController.EndExecute(IAsyncResult asyncResult) +24
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__ 5(IAsyncResult asyncResult, ProcessRequestState innerState) +27
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDel egate(IAsyncResult asyncResult) +48
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End( ) +58
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +30
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsync Result asyncResult, Object tag) +21
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsync Result asyncResult) +29
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHan dler.EndProcessRequest(IAsyncResult result) +23
System.Web.CallHandlerExecutionStep.System.Web.Htt pApplication.IExecutionStep.Execute() +9742689
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean& completedSynchronously) +155

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1038.0

Could this just be a folder name being too long?