Easy, I think!

Hi,
     I want to take info from the user into a TStringList. Firstly, there is no component associated with the stringlist, so do I declare it in the  unit's type declaration, or as a variable?
    The info is taken from an edit box. So I tried writing this:

var
   mylist : TStringList;
begin
   mylist.Add(edit1.Text);
end;

When I run this, it compiles OK, but when I try to use it, it says 'EGPFault'. Do I have to instantiate the TStringList anywhere?
Cheers, Nik

LVL 1
NikWhitAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

d003303Commented:
Right, you must create an object before you use it and free it afterwards. So your code should read

var
   mylist : TStringList;
begin
   myList := TStringList.Create
   mylist.Add(edit1.Text);
   // whatever code...

  myList.Free;
end;

If you want to use myList globally, put it into your forms private variables and create it in OnCreate and free it in OnDestroy.

Slash/d003303
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Delphi

From novice to tech pro — start learning today.