Set Multiple Selection Listview

Question

I have a string string a="A:B:D". Which means the selected listview is the 1st, 2nd, and 3rd index listview I want to display multiple selection listview according to above string. code:

string a="A:B:D"
string pattern = @"[^:]";
                                        foreach (Match m in Regex.Matches(a, pattern))
                                        {
                                            if (m.Value.Contains("A"))
                                            {
                                                ListManyOption.SelectedIndex = 0;
                                            }
                                            if (m.Value.Contains("B"))
                                            {
                                                ListManyOption.SelectedIndex = 1;
                                            }
                                            if (m.Value.Contains("C"))
                                            {
                                                ListManyOption.SelectedIndex = 2;
                                            }
                                            if (m.Value.Contains("D"))
                                            {
                                                ListManyOption.SelectedIndex = 3;
                                            }

But when I use the code above, only the 3rd index listview is selected. How do I display the multiple selection listview according to the string above?

Answer 1

Set the SelectionMode property of the ListView to Extended or Multiple and add the items to be selected to the SelectedItems collection:

foreach (Match m in Regex.Matches(a, pattern))
{
    if (m.Value.Contains("A"))
    {
        ListManyOption.SelectedItems.Add(ListManyOption.Items[0]);
    }
    if (m.Value.Contains("B"))
    {
        ListManyOption.SelectedItems.Add(ListManyOption.Items[1]);
    }
    if (m.Value.Contains("C"))
    {
        ListManyOption.SelectedItems.Add(ListManyOption.Items[2]);
    }
    if (m.Value.Contains("D"))
    {
        ListManyOption.SelectedItems.Add(ListManyOption.Items[3]);
    }
}