Hashset<T> <- It didn't work in my computer.

Question

hello.

I want to use HashSet in my program.

but I couldn't declare HashSet.

My Computer was installed Microsoft .Net FrameWork 3.5.

and also I declared namespace. (using System.Collections.Generic)

But It didn't work.

How i fix this problem?

i am use visual studio 2005(c#) and Windows 7.

thanks.

Answer 1

The <T> means that a hashset is a hashset of a particular type. So for example, you could have a HashSet<String> or a HashSet<Integer> etc. and you have to declare it as such.

(I'm coming from a Java background but I'm 97% sure it's pretty much the same in C#).

Answer 2

"i am use visual studio 2005(c#) and Windows 7."

Then you're not using .Net 3.5. You need to specifically reference the System.Core assembly in your project.

Answer 3

Its pretty much the same as java. The only difference is that EVERYTHING inherits from object in c# (even primitives like 'string','int',etc...). Meaning, declare it as:

HashSet<string> rather than HashSet<String>