Adding items to list view with text label and key value

Question

I'm trying to add items to a ListView control. I wish to add the items with a text value (which is shown) and a hidden key value that it has when it is selected.

I've tried the following code:

string flows_path = "C:\\temp\\Failed Electricity flows\\";
            List<ListViewItem> flows_loaded = new List<ListViewItem>();

            foreach (string s in Directory.GetFiles(flows_path, "*.rcv").Select(Path.GetFileName))
            {
                ListViewItem new_item = new ListViewItem(s, 1);
                ListViewItem.ad

                // Add the flow names to the list
                flows_loaded.Add(new_item);

            }

But it tells me that ListViewItem doesn't have an overload of (string, int) and it doesn't appear to have a 'value', 'text' or 'key' value that I can set.

ListViewItem("My Item") works, but I don't know how to implement a key for each item.

Answer 1

You can store an additional value associated with a ListViewItem by storing it in the Tag property.

ListViewItem new_item = new ListViewItem(s);
new_item.Tag = my_key_value;

ETA: Please remember that the Tag property is of type object, so in some cases you may need to explicitly cast values to the proper type when retrieving the value.