The name does not exist on the current context

Question

How to get and use the control name from the mainform? For example is, I am creating a method in which files will be listed on a ListView. And I plan to create this method in a utility class but I get an error "does not contain on the current context".

public class UtilityClass
{
        private void SearchHeaderFiles( )
        {
            foreach(FileInfo f1 in...)
            {       
        listView.Items.Add(f1.Name);
            }
    }
}

Answer 1

var listView = Application.OpenForms["Form1"].Controls["listView"] As ListView;
if (listView != null)
    listView.Items.Add(f1.Name);