c# - Storing complex data in a list -

i'm working product called sitefinity.

i have class looks so:

public class categories {         public icontent ocontent {get; set;}     } 

i'm looping through list , trying check whether current value exists, so:

ilist items = base.createdatasource(); ilist filteredlist = new list<string>();  foreach (icontent cnt in items) {    if (!filteredlist.contains(cnt))     {         filteredlist.add(cnt);     } } return filteredlist; 

but returns error. using .contains correctly?

update:

ok have updated:

list<icontent> filteredlist = new list<icontent>(); 

however, icontent has method can called extract further information, so:

foreach(icontent cnt in items) {     string strcat = cnt.getmetadata("category"); } 

now although want filteredlist contain multiple icontent items, want check against string getmetadata before deciding whether item should added. make sense?

thanks.

you cannot add icontent object list<string>, since list<string> can hold strings.

change list<icontent> , work fine.

also, c#is not java; not declare list variables ilist.
had declared them actual types (list<string> , whatever createdatasource returns), wouldn't have had issue.