private void lstManufacturers_SelectedIndexChanged(object sender, EventArgs e)
{
if (lstManufacturers.SelectedItems.Count > 0)
{
DataRowView drv =(DataRowView) lstManufacturers.SelectedItems[0];
int manufacturerID = Convert.ToInt32(drv["ManufacturerID"]);
Item itm = new Item();
txtStackedHeight.EditValue = itm.GetStackHeight(_itemID, manufacturerID);
im.LoadManufacturerItemRelationsFor(this._itemID, manufacturerID);
lstLevel.DataSource = im.DefaultView;
lstLevel.DisplayMember = "PLevel";
lstLevel.ValueMember = "ID";
lstLevel.SelectedIndex = 0;
OnPackageLevelSelected(new object(), new EventArgs());
}
}