Ideally you shouldn't have to. The UI should just be a representation of the real data you have stored. Therefore you can simply work with your data as normal and then update the UI accordingly.
But if you have a treeview and you want to enumerate it then you'll start with the root nodes (TreeView.Nodes) and then
enumerate. Depending upon whether you want to process each node as you get to it or do all the nodes at a particular level first determines how you proceed. Ultimately though it involves looking at each node and then, if it has children, enumerating them.
Since we don't know how you built the tree we won't know how to extract the data but a common technique is to store the data in the Tag property. So you can enumerate the nodes and retrieve the data from the property.
void EnumerateTree ( TreeView tree )
{
foreach (TreeNode node in tree.Nodes)
EnumerateTree(node);
}
void EnumerateTree ( TreeNode node )
{
//Process the current node
ProcessNode(node);
//Enumerate its children
foreach (TreeNode child in node.Nodes)
EnumerateTree(child);
}
void ProcessNode ( TreeNode node )
{
//Get the data - from the Tag?
var data = node.Tag;
}
Michael Taylor http://www.michaeltaylorp3.net
