Casting error in ASP.NET

Question

I have a class declared in the App_Code folder. The class contains a public shared method that returns a type Portfolio.

When I try to call this method to initialize an object of type Portfolio in one of the ASCX controls, i get a "Value of type Jaguar.Portfolio cannot be converted to Jaguar.Portfolio" message.

This is a "Website" project. I have tried using CType and DirectCast and I still get the same compilation error when I try to build the site.

I am using the line of code listed below in the code behind file of the ascx control

Dim pObjSvc As Jaguar.Portfolio = ClassName.GetPortfolio

Answer 1

Do you have a webpage or a user control also called Portfolio? You may have a name space collision where it's confused between which Portfolio object to use. If this is the case, you'll need to change the name of the Class/Module or the control's or page's code behind class and you should be all set.

Answer 2

Just a debugging tip:

Try to rename the Portfolio class and recompile. Maybe there is an old assembly somewhere or some other code in .vb your files which contains a class with the same name?

Answer 3

There seems to be someone else with the same problem out there:

ASP Net - value of type "MyNamespace.MyClassName" cannot be converted to "MyNamespace.MyClassName"

I have a ASP.Net application that uses assemblies from several other solutions. When testing the applications on my machine I build all the referenced assemblies using nmake. The latest assemblies get placed in a common directory that is referenced by my ASP.NET app.

Occasionally I receive the following error: value of type "MyNamespace.MyClassName" cannot be converted to "MyNamespace.MyClassName" (there are a lot of these for different classes) when doing a debug build. I have tried the following with no luck:

Build the ASP.Net application Rebuild the ASP.Net application Close VS and build the ASP.Net application Close VS.Net as rebuild the asp.Net application IISreset and build/rebuild the application

It seems the only thing that works is if I run nmake to build all my referenced assemblies, I can then build the ASP.Net application.

Any ideas as to what causes this? Is there an easier way to fix it?

Sadly, the author of the question did non find a definitive answer. But perhaps it contains a hint which could be helpful to find the solution.

UPDATE: I'm not sure if that is even possible in a ASP.NET website, but maybe you accidentally added a reference to a (temporary) assemmbly of the project itself? That would explain the error. Try also to remove the contents of bin and obj folder.

Answer 4

I have seen situations similar to this when an aspx page was created with the same name as a business object class. Do you have some some aspx page with a code-behind class of Portfolio as well?