c# - Can I access properties of a ListViewItem.Tag rather than just the "ToString" method? -

be patient, not sure how best ask 1 ...

1. i have listview control on windows form , add items names of text files in directory.
2. each of files loaded object "resultfile" , assigned many properties based on text within - "string type", "int numberoflines", "bool isgeneric" etc.
3. a user can select/deselect freely make decisions based on text file type have selected already. rough idea, if have selected 1 "type=="x1" don't want them able select one. if select 2 or more isgeneric==true, want give them warning ...

i started extending listviewitem this

public class mylistviewitem : listviewitem {     public string type { get; set; }     public int numberoflines { get; set; }     public bool isgeneric { get; set; }      public mylistviewitem(string s)         : base(s)     { } } 

i happy first time i've extended control (yes, i'm new this) ... allows me add own types of "listviewitems" , can access properties make decisions found "tag" property , thought tie object , access items directly. looked @ msdn , said can attach "any" object don't know how use it.

i don't seem able except access default object methods.

     mylistview.item[1].tag.tostring(); 

seems can ...

am missing listviewitem.tag property??

the tag property takes object of type object, class inherited object can stored within it. if had object this:

public class myitem {     public string type { get; set; }     public int numberoflines { get; set; }     public bool isgeneric { get; set; } } 

you can assign object tag field, so:

var myobj = new myitem(); myobj.type = "type 1"; mylistview.items[1].tag = myobj; 

and retrieve object so:

var myobj = (myitem)mylistview.items[1].tag; var type = myobj.type; 

only after cast myitem can access custom properties. otherwise you'll object properties , methods, 1 of .tostring().