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.

You could use the Tag property of every ListViewItem to store and retrieve the key value. — John Willemse
– John Willemse, Commented Mar 5, 2013 at 11:07

John Willemse · Accepted Answer · 2013-03-05 11:18:48Z

8

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.

edited Mar 5, 2013 at 11:18

answered Mar 5, 2013 at 11:09

John Willemse

6,7067 gold badges34 silver badges46 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Tomtom · Accepted Answer · 2013-03-05 11:06:15Z

3

You can add a "hidden"-value by setting the Tag-Property of the ListViewItem

ListViewItem new_item = new ListViewItem(s)
{
   Tag = 1
};

answered Mar 5, 2013 at 11:06

Tomtom

9,4487 gold badges58 silver badges99 bronze badges

2 Comments

Luke Over a year ago

Thanks. Am I using the wrong control type if I have to use the Tag, or is this the correct way to implement this?

Tomtom Over a year ago

It's the correct way. The Tag-Property you have at each control. There you can save any informations you'll need.

Tsad · Accepted Answer · 2024-10-31 14:33:33Z

0

ListView has item key functionality you want. You can add key to the item this way:

listView1.Items.Add("yourKey", "itemText", imageIndex);

but if you want to add to ListView by ListViewItem object, the object constructor doesn't have key parameter for item. You can then use Name property (which is the item key property in fact).

ListViewItem new_item = new ListViewItem("itemText", imageIndex){ Name = "yourKey"};

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

edited Oct 31, 2024 at 14:33

answered Oct 31, 2024 at 11:57

Tsad

11 bronze badge

Collectives™ on Stack Overflow

Adding items to list view with text label and key value

3 Answers 3

Comments

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related