How to add items in listview from ini file?

Yes this is possible, for example here is how you can do that with a help of LINQ and this C# library that can read INI file:

var ini = new IniFile();
ini.Load("Sample.ini");
 
var listItems = from iniSec in ini.Sections
                from iniKey in iniSec.Keys
                select
                    new ListViewItem(
                        string.Format("KEY NAME: {0}, KEY VALUE: {1}",
                            iniKey.Name, iniKey.Value));
 
this.listView1.Items.AddRange(listItems.ToArray());