Set Multiple Selection Listview-CodePudding

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?

CodePudding user response：

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]);
    }
}