Using List Exists Method in C#

[a1jit]

I am having a problem doing the following in generics.

I have one custom type array. Its a struct with few elements in it like id, shortname, longname

Sample data would be
1, a, australia
2, a, asia
3, b, bangkok

The problem im facing is that i want to actually gather all unique shortname
and place it in another List (generic)

I plan to create another new List, and then check whether the
element exists in the new List, if not add it, else, move to the next item

So i plan to make use of the Exists method in generic (List) but
seems like im not sure how to use it since it has predicate.

I hope the above explanation makes sense.

Does anyone have some idea of how I might go about this? Any help
(particularly example code) would be much appreciated.

 

[TaleOfTimes]

Here is a link on how to use predicates:

http://msdn.microsoft.com/en-us/library/bfcke1bz(VS.80).aspx

Just think of it as a Comperator, except youre only using a method.

 

[Nate Bross]

If you are using .NET 3.5 and have access to LINQ, you might make use of something like this:

var x = from struct s in genericList
                            select s.ShortName;

var distinct = Enumerable.Distinct(x);