How to add subitems to a ListView?

Question

I\'m trying to get the simplest possible example of a Listview with subitems working. But this code:

private void button1_Click(object sender, EventArgs e) {         


        

Answer 1

You need to add another column for the SubItem. The reason why your subitem is not shown is because there is no column for it. Try this one.

listView1.Columns.Add("Column 1"); // you can change the column name
listView1.Columns.Add("Column 2");
string[] strArr = new string[4] { "uno", "dos", "twa", "quad" };
foreach (string x in strArr)
{
    ListViewItem lvi = listView1.Items.Add(x);
    lvi.SubItems.Add("Ciao, Baby!");
}

Answer 2

Try adding the item after adding a subitem:

ListViewItem lvi = new ListViewItem(strArr[i]);
lvi.SubItems.Add("Ciao, Baby!");
listView1.Items.Add(lvi);    
listView1.Items[i].Group = listView1.Groups[0];

Hope this helps!

Answer 3

This works for me:

listView1.Columns.Add("Col1");
listView1.Columns.Add("Col2");

string[] strArrGroups = new string[3] { "FIRST", "SECOND", "THIRD" };
string[] strArrItems = new string[4] { "uno", "dos", "twa", "quad" };
for (int i = 0; i < strArrGroups.Length; i++)
{
    int groupIndex = listView1.Groups.Add(new ListViewGroup(strArrGroups[i], HorizontalAlignment.Left));
    for (int j = 0; j < strArrItems.Length; j++)
    {
        ListViewItem lvi = new ListViewItem(strArrItems[j]);
        lvi.SubItems.Add("Hasta la Vista, Mon Cherri!");
        listView1.Items.Add(lvi);
        listView1.Groups[i].Items.Add(lvi);
    }
} 

It turns out that you have to add the items to the groups, and not set the group property on the item, as shown in other questions. Very, very strange.

The result is:

Tested in .Net 4, WinForms, VS2010