what is treenode.tag means

Question

hello i have a question about the treeview what is treenode.tag means  and what the purpose of it ex :- trn = new TreeNode(table.Rows[i][1].ToString()); trn.Tag = table.Rows[i][0].ToString(); tree_acc.Nodes.Add(trn);

Nilesh Shah · Answer

tag gives you a means by which you can attach any value or some specifier which can distinctly identify or seperate out a tree node. Let's say you have a tree view with 3 level structure like state wise city wise customer names. Now you want to keep a track of all nodes which are at state level all nodes which are at city level all nodes which are at customer (3rd level) how do you identify those? simply when you create those nodes also assign tag property as state city or customer so later when let's say user clicks on a particular treeview node then from reading its tag property you can identify if a state city or customer type treeview item is clicked.

rami izzeldin · Answer

thank you very much Nilesh Shah amazing explination

Nilesh Shah · Answer

In tag attribute you can assign any value you want it's used to keep track of an item or identify it

rami izzeldin · Answer

thank you for your answer but i need to understand it well how this attribute can keep track of this item  what is the mechanizm