Parser Error: Server Error in '/' Application

Question

I got the following error: "An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately."

Parser Error Message: `Could not load type 'nadeem.MvcApplication'`.
Source Error:  Line 1:  <%@ Application Codebehind="Global.asax.cs" Inherits="nadeem.MvcApplication" Language="C#" %>

Answer 1

Right-click your Global.asax file and click View Markup. You will see the attribute Inherits="nadeem.MvcApplication". This means that your Global.asax file is trying to inherit from the type nadeem.MvcApplication.

Now double click your Global.asax file and see what the class name specified in your Global.asax.cs file is. It should look something like this:

namespace nadeem
{
    public class MvcApplication: System.Web.HttpApplication
    {
    ....

If it doesn't, then you will receive the error you received. The value in the Inherits attribute of your Global.asax file must match a type that is derived from System.Web.HttpApplication.

Answer 2

I had this exact same issue when I downloaded the project source into two locations. The issue turned out to be by downloading the source it altered the sites virtual directory location and since I had not rebuilt the second source there were no DLLs there.

1. To fix this issue open the project you wish to build and go to the web sites properties (Project menu)
2. Create the virtual directory for the project.
3. rebuild the project.

Fixed

Answer 3

After going through all of my projects in my Solution to set the compile to output to bin\debug and bin\release, this problem started for me. I finally realized that the startup project (i.e. the project with global.asax) needed to output to bin only.

Answer 4

Since normally you create an MVC project the Global.asax markup has something like the following:

<%@ Application Codebehind="Global.asax.cs" Inherits="StackOverflow.MvcApplication" Language="C#" %>

Have you placed the Global.asax.cs in another project? If you have remove the CodeBehind="..." declaration from Global.asax and change the Inherits="..." declaration to reference the correct namespace and classname as it is defined in Global.asax.cs file.

If you haven't moved it try a Clean and then Rebuild of the Project in Visual Studio using the context Menu on the Web project. That worked for me when I got this error.

Answer 5

1. Go to Project Properties
2. Look Output Path in the Page bottom
3. Change path to: bin\
4. Save and Run Project

Answer 6

The case is solved, but you may also get this error if your project is building to a different directory than IIS_Virtual_Directory\bin and dlls are missing.

Answer 7

As Kevin answered. I was changing the project name and namespacing in my MVC project. When I ran the application I got the same error "Line 1: <% .....".

To fix this, I needed to update the namespace within Global.asax (Right Click -> View Markup) then in the Inherits attribute update this to "<correct root namespace for MVC project>.MvcApplication".

Answer 8

simply just copy the project to another location and run it will work i think problem because of the cleaning is not correctly done and there may be setup change in the output /bin

Answer 9

When I got this error it was after I deleted and recloned a Git folder; what happened was I forgot to build the solution in VS2010. As soon as I built it, everything worked fine. Sometimes it's something really simple like that.

Answer 10

In my situation I was getting this same error. I am using git along with Source Tree for version control. In my case git had been enabled in the project, but I wasn't using Visual Studio to stage my commits, etc .. I was using Source Tree. This doesn't really matter what I was using the problem is that visual studio had put the following line into my gitignore file:

#Build Results
[Bb]in/

That was ignoring the bin folder so my bin folder never got pushed up to the server, once I removed that line and committed the entire bin directory and pushed it up to the server and then went to the server and did a git pull. The bin folder showed up and everything started working!

BTW, my final gitignore file (#Build results) section ended up looking like this:

# Build results

[Dd]ebug/
[Rr]elease/
x64/
build/
[Oo]bj/

Im still unsure if I need the Obj folder to be pushed to the server, but everything is working fine now.

Answer 11

In my case the solution was the next:

1. Verify the markup of Global.asax, in the attribute Inherits I had this Inherits="NameOfMyProject.Global"

2. Then, verify the Global.asax.cs and I found this:

   public class Global_asax : System.Web.HttpApplication

3. Therefore, I changed the attribute Inherits in my Global.asax, and finally the markup was the next:

   Inherits="NameOfMyProject.Global_asax"

4. Also, I started the: ASP.NET state service, in the Administrative Tools. Then, my app run normally.

Answer 12

I was learning from a video resource and ran into this error when told to hit Ctrl-F5 in the View in order to load it directly. By doing this, I ran into the same error message you posted.

In order to fix this, I built the solution (Build > Build Solution or Ctrl+Shift+B) and then retried.

Answer 13

In my case, it helps: if you use a folder other than the default project ( naprmer on the D drive , in the case of Windows), then change to the default folder , create the project , run it. Then again, you can create projects in the folder in which you want . Strange. But this has helped in my case.

Answer 14

This happened to me when i was trying to merge two solutions. the problem was the namespace was not well configured in all files. one part of story solved with @Kevin Aenmey answer but many other's ... not!

so the only way for me was to search for old namespace in the whole solution and replace them all with new namespace.maybe not the best option but in case of bad luck works nice

Answer 15

This error causes when Namespace is Renamed.

-

1. Go to Folder Explore ( Don't Use Solution Explore) . Find Global.asax File

.

2. Open File (in Notepad / any editor) and Change Replace Old namespace name New Namespace

.

3. Save It should work now..

Answer 16

I had the same problem and that was because I didn't build the solution. Rookie mistake. Just: build solution (Ctrl + shift + b)

Answer 17

I had this problem after adding a new project to my solution. The solution built, no problem - but then bombed at runtime.

It turned out that the new project was set to target .NET 4.6.1 by default, whereas everything else in mhy solution targets .NET 4.5.

Changing the target framework in the new project to .NET 4.5 to match the others fixed the problem.

(thanks for no warning on that one Microsoft guys)

Answer 18

I use FTP to upload DLLs of my site on the server but sometimes this error happen when the main DLL of the website has not been uploaded correctly on the server.

So I recommend you to rebuild you project and re-upload main DLLs on the server again.

Answer 19

In our case - deleting all the contents of a published intranet site, and republishing the project that worked fine in debug fixed the problem.

Answer 20

For me Deleting the dlls from the BIN folder and then building the project worked