Question

Hope I can do this, I’m still newish to C#…

I have a bunch of lists of strings that I want to put into different columns of a Listview. I’m able to get the first column to populate using the code shown below, but can’t figure out how to do this for the subsequent columns.

        List<string> l_Time = new List<string>();

        //l_Time is populated by a method

        foreach (string elem in l_Time)
        {
            listViewEvents.Items.Add(new ListViewItem(elem));
        }

listViewEvents is my ListView

Any help is appreciated.

Edit:

Both shown solutions work to store my lists across a row, which I was able to find a lot online. I want to be able to store each list down it’s own column. Is this possible?

Answer 1

Try this:

listViewEvents.Items.Add(new ListViewItem(l_Time.ToArray())); 

The ListViewItem class has a constructor that takes an array of strings. When that constructor is used, then the other strings will appear in the other columns.

If you want to do more with the other columns, then the list view item has a SubItems property that holds a collection of ListViewItem.ListViewSubItem objects. You can create these with whatever values you want and add them to the list view item objects.

UPDATE

Here’s a way to display lists of strings in separate columns:

    private static void DisplayListInColumns(ListView listView, List<string> values, int columnIndex)
    {
        for (int index = 0; index < values.Count; index++)
        {
            while (index >= listView.Items.Count)
                listView.Items.Add(new ListViewItem());
            ListViewItem listViewItem = listView.Items[index];
            while (listViewItem.SubItems.Count <= columnIndex)
                listViewItem.SubItems.Add(new ListViewItem.ListViewSubItem());
            listViewItem.SubItems[columnIndex].Text = values[index];
        }
    }

Called like this:

        List<string> listOne = new List<string>() { "one", "two", "three", "four", "five", "six" };
        List<string> listTwo = new List<string>() { "January", "February", "March", "April", "May" };
        List<string> listThree = new List<string>() { "alpha", "bravo", "charlie", "delta", "echo", "foxtrot", "golf", "hotel" };

        DisplayListInColumns(myListView, listOne, 0);
        DisplayListInColumns(myListView, listTwo, 1);
        DisplayListInColumns(myListView, listThree, 2);