I use web reference and this namaspace is in the App_webreferences
folder but i counter with this problem. ?İs there anyone who can help me
What error message are you receiving?

Compiler Error Message: CS0246: The type or namespace name 'tr' could
not be found (are you missing a using directive or an assembly
reference?)

Source Error:



Line 9: using System.Web.UI.HtmlControls;
Line 10: using System.Xml;
Line 11: using tr.gov.nvi.tckimlik;
Line 12: public partial class _Default : System.Web.UI.Page
Line 13: {