Web Method in Webservice

public string LoginHandler(string strEmail_Id, string strPassword,  out int strID, out string strName, out string strRole, out int Status_Parameter, out string Status_Msg)
 {
     DbCommand objlogin = null;

     try
     {
         objConn = dbkhorizon.CreateConnection();
         if (objConn.State == ConnectionState.Closed)
         {
             objConn.Open();
         }
         objlogin = objConn.CreateCommand();
         string strlgn = "usp_login_main";
         objlogin.CommandType = CommandType.StoredProcedure;
         objlogin = dbkhorizon.GetStoredProcCommand(strlgn);


         dbkhorizon.AddInParameter(objlogin, "@email_id", DbType.String, strEmail_Id.Trim());
         dbkhorizon.AddInParameter(objlogin, "@password", DbType.String, strPassword.Trim());

         dbkhorizon.AddOutParameter(objlogin, "@ID", DbType.Int32, 3000);
         dbkhorizon.AddOutParameter(objlogin, "@User_Name", DbType.String, 100);
         dbkhorizon.AddOutParameter(objlogin, "@role", DbType.String, 100);
         dbkhorizon.AddOutParameter(objlogin, "@errordesc", DbType.String, 200);

         DataSet ds = new DataSet();
         DataTable dt = new DataTable();
         ds = dbkhorizon.ExecuteDataSet(objlogin);
         dt = ds.Tables[0];

         if (dt.Rows.Count == 0)
         {
             Status_Parameter = 0;
             Status_Msg = "LOGIN FAILED";
         }
         else
         {
             Status_Parameter = 1;
             Status_Msg = "LOGIN SUCCESS";
         }

         strID = Convert.ToInt32(objlogin.Parameters["@ID"].Value);
         strName = (objlogin.Parameters["@User_Name"].Value).ToString().Trim();
         strRole = (objlogin.Parameters["@role"].Value).ToString().Trim();

     }
     catch (Exception ex)
     {
         throw ex;
     }
     finally
     {
         if (objConn.State == ConnectionState.Open)
         {
             objConn.Close();
             objConn.Dispose();
             dbkhorizon = null;
         }
     }

     return Status_Msg;
 }