public static TopLevelForm CreateTopLevelWindow(string fileName)
{
// Detect whether file is already open
if (!string.IsNullOrEmpty(fileName))
{
foreach (TopLevelForm openForm in Application.OpenForms)
{
if (string.Compare(openForm.FileName(), fileName, true) == 0)
{
// Bring form to top
openForm.Activate();
return(openForm);
}
}
}
// Create new top-level form and open file
TopLevelForm form = new TopLevelForm();
form.OpenFile(fileName);
form.Show();
// Bring form to top
form.Activate();
return(form);
}
