private void searchBx_SearchButtonPressed(object sender, EventArgs e) { string text = ""; if (searchBx.Text.Length == 5) { var query = listSMSNumbers.Where(x => (x.SMSNumber == (searchBx.Text))); if (query != null && query.Count() == 0) { text = "." + $"الرقم {searchBx.Text} مُتاح " + $"{ SMSNumber.GetPrice(searchBx.Text) } "; ShowText(text, "Green"); } else { text = "." + $"الرقم {searchBx.Text} مُخصص"; ShowText(text, "Red"); } } }