public bool CastVariables()
 {
     try
     {
         ProductIDs.AddRange(ProductIDsText.Split(',').Select(s => int.Parse(s)));
         ProductQuantity.AddRange(ProductQuantityText.Split(',').Select(s => int.Parse(s)));
     }catch (Exception ex)
     {
         return(false);
     }
     return(true);
 }