Friday, February 23, 2018

References and external class use problems

By Hường Hana 9:30 AM , , Leave a Comment

Using Visual Studio 2015 on an ASP.NET project. Everything works fine except now I have a block of code (A common AD utility function) that I want all the pages to be able to access. The original language (inherited project) is VB.NET, but it should work just fine either way.

I created a class file, named it CommonADFunctions.vb. The file uses System.DirectoryServices, and there's a reference in the project to that assembly. However, there are two problems:

  1. I can't reference the new class to call the functions from any of the page code files. This includes attempts to instantiate a new variable as the class type.
  2. When I move the new .VB file into App_Code, the reference to System.DirectoryServices breaks, and it refuses to build.

This may seem like a trivial ask, but what am I missing?

2 Answers

Answers 1

Turns out this was a simple property on the file itself I created a new Class File, and somehow the Build Action got set to Content rather than Compile. Setting this to Compile allowed the object to be referenced and instantiated properly. It doesn't fix the IDE intelliSense from APP_Code for DirectoryServices references in the code, but it compiles and runs, which is what I needed.

EDIT: Received external help which pointed this out.

Answers 2

Without code and screenshots to illustrate I can only recommend a few things to try.

I can't reference the new class to call the functions from any of the page code files. This includes attempts to instantiate a new variable as the class type.

  1. The methods in the class have Private or Friend scope.

  2. Its a static class (a Module in VB.Net) and you do not need to instantiate it.

  3. You are somehow referencing an old DLL which doesn't have the methods. Check the reference to this AD project and make sure its "Referenced" via Project.

When I move the new .VB file into App_Code, the reference to System.DirectoryServices breaks, and it refuses to build.

This sounds like a corrupt project file. Clean the solution, delete the .suo file, delete the obj & bin folders.

Then move the CommonADFunctions.vb to the App_Code folder and add the DLL reference to System.DirectoryServices. Or create the CommonADFunctions.vb file in App_Code to start with.

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