Visual C# 2008 Express

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I'm having a fairly basic problem with Visual Studio.

I'm using Visual C# 2008 Express Edition
I have .net framework 3.5

I have no access to HashSet<t> class.

It's in System.Collections.Generic, which is included in System.Core.

I have included a reference to System.Core in my project, and I have included Systems.Collections.Generic in my class.

I have all of the System.Collections.Generic classes EXCEPT HashSet.

Anyone have any possible problems?

Posted 26-Jun-10 21:09pm

JedJackoway

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OriginalGriff 27-Jun-10 3:56am

Check the framework version again - if you are not using V3.5 then it will not be available. If you created a new 3.5 project it should be there. Go to the menu: "Project"..."Your name Properties" and the "Target framework" should be on the left.

JedJackoway 27-Jun-10 4:02am

I do not have "Target Framework" as an option. I think something is wrong with my solution file, I am going to try switching to Visual Studio 2010 and see if this fixes the problem.

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OriginalGriff · Answer 1 · 2010-06-26T21:50:00

I don\'t use Express, but it was introduced at .NET 3.5 so you should have it.
Try this:
1) Create a new project as part of your solution - make it a Console App, for simplicity, and ensure it is .NET framework version 3.5 (this is all on the add project dialog screen)
2) In your Main method, start a new line, and type Hash.

Does intellisense list HashSet<>?

Complete the line as:

HashSet<string> hs = new HashSet<string>();

Does the syntax color change for HashSet?
If not, right click the word HashSet - do you have an option \"Resolve\"? If so, what happens with the various options?

Respond either by editing your original question, or by commenting on this answer - do not use the add answer button!