Parser error message could not load type

4

Error Description:

• Parser Error Message: Could not load type ‘TestMvcApplication.MvcApplication’.
• Source Error:
1. Line 1: <%@ Application Codebehind=»Global.asax.cs» Inherits=»TestMvcApplication.MvcApplication» Language=»C#» %>
2. Source File: /global.asax Line: 1

Solution 1:

• Running the project from Visual Studio works fine. This is the source code from Global.asax:

namespace WebApplication5
{
    public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
        }
    }
}

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• This leads us to believe that we might not have something install or some configuration is not correct that IIS sets globally.Here is what steps we followed for a new web application in Visual Studio 2015:

1. File -> New Project -> ASP.NET Web Application -7gt; MVC
2. Runed the project on visual studio it works with the default templates
3. On IIS we created a new website and in that website we created a new web application which is mapped to the folder of the project.

• we created an application pool for the newly created project inside the website that has the following configuration.

• .NET CLR versions is set to .NET CLR Version v4.0.30319
• Managed Pipeline is set to integrated

• Clean and Rebuild for Visual Studio
• Restart Visual Studio Clean Rebuild an PC Reset Clean rebuild
• we made sure that the project adds its assemblies in the bin folder
• we made sure that in Solution ->Properties -> Configuration Properties the proejct is set to debug
• we made sure that the namspace in Global.asax xml file points to the correct type in Global.asax.cs

Solution 2:

• We had this a couple of times and the error message holds no clue as to what might be the issue.
• To fix this, right click our project title, in this case «TestMvcApplication» and click build.
• This forces the code to compile before we run it. this has been the solution 100% of the time for all.

Solution 3:

• We had been working on a web api project that was using localhost:12345.
• We checked out a different branch from source control containing the same project.
• We ran the project on the branch and got the error.
• we went to «Properties > Web > Project Url» and clicked «Create Virtual Directory»
• A dialog came up telling me that the url was mapped to a different directory (the directory for the original project).
• we clicked Okay and the virtual directory was remapped.
• The error went away.

Solution 4:

• We need to read the Python Unicode HOWTO. This error is the very first example.
• Basically, stop using str to convert from unicode to encoded text / bytes.
• Instead, properly use .encode() to encode the string:

p.agent_info = u' '.join((agent_contact, agent_telno)).encode('utf-8').strip()

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Solution 5:

a = u'batsu00E0'
print a
 => batsà

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str(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'xe0' in position 4: ordinal not in range(128)

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a.encode('utf-8')
 => 'batsxc3xa0'
print a.encode('utf-8')
 => batsà

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• The issue is that when we call str(), python uses the default character encoding to try and encode the bytes we gave it, which in our case are sometimes representations of unicode characters.
• To fix the problem, we have to tell python how to deal with the string we give it by using .encode(‘whatever_unicode’).
• Most of the time, we should be fine using utf-8.

When an .aspx page of ASP.NET 2.0 Web Application is viewed, at times we get the error «Could not load type xxxx’. The sample error message displayed is as follows

Parser Error

Description: 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 ‘xxxxxxx.Web.UI.Admin.Test’.

Source Error:

Line 1: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="xxx.Web.UI.Admin.Test" %>
Line 2:
Line 3: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/ DTD/xhtml1-transitional.dtd">

Source File: /Test.aspx    Line: 1

There are several reasons why we get the error. We will present you the major reasons why we get the error and also how to correct them

Reason 1: Invalid Build Output Directory

If the build output folder of the web application  is set to any folder other than Bin, you would get this error. For example pointing the build output folder to ..CommonBin or C:Bin is not a valid configuration and this invalid configuration causes the Could not load type error.

To solve the error always point your output folder of the web application project to bin

Reason 2: Referring to Code Behind Modules Without Building The Application

If you refer to any code behind module in .aspx pages or Global.asax page and the web application has’nt been built then you get this error.

To solve the error, build the web application using Build option(Ctrl+Shift+B) available  in Visual Studio.NET development environment or use command line compilers like CSC.

Refer to Microsoft support page for elaborated information

Reason 3: Incorrect asp.net version configuration in IIS

Incorrect asp.net version configuration in IIS server also causes this error. For example, if you are using Visual Studio 2005 with an  IIS configured with ASP.NET v1.1 is an invalid configuration.

In order to solve the problem follow these simple steps

1. Go to Start Menu, click on Run (alternatively use Win Key + R )
2. Type INetMgr and press enter to open Internet Information Services Application
3. Expand the tree node displaying local computer name and navigate to Web Sites—>Default Web Site
4. Right click on Default Web Site node and select the popup menu option Properties

1. Navigate to ASP.NET tab in the properties page and set the version to 2.xxxx(for Visual Studio 2005) or 1.xxxx(for Visual Studio 2003)