Get output parameter value in ADO.NET

[DataObjectMethod(DataObjectMethodType.Insert)]
public static int Insert(object Fname, object Lname, object UserName, object Password, object Mobile, object RoleId,object Pic,object Date,object Active, out string msg)
{
    int Result = 0;
    SqlParameter[] parameters = new SqlParameter[]
    {
        new SqlParameter("Fname",Fname),
        new SqlParameter("Lname",Lname),
        new SqlParameter("UserName",UserName),
        new SqlParameter("Password",Password),
        new SqlParameter("Mobile",Mobile),
        new SqlParameter("fk_RoleId",RoleId),
        new SqlParameter("Pic",Pic),
        new SqlParameter("Date",Date),
        new SqlParameter("Active",Active),
        //new SqlParameter()
    };

    //SqlParameter Outparam = new SqlParameter("msg", SqlDbType.NVarChar);
    //Outparam.Direction = ParameterDirection.Output;
    //parameters[8].Value =  new SqlParameter("msg", Outparam);

    Result = ExecuteNonQuery("sp_Insert_User", parameters);
    return Result;

}

/// <summary>
       /// Get a stored procedure name and parameters and return the number of rows affected
       /// </summary>
       /// <param name="commandText">Name of StoredProcedure</param>
       /// <param name="parameters">Array of SqlParameter</param>
       public static int ExecuteNonQuery(string commandText, SqlParameter[] parameters)
       {
           cmd = new SqlCommand(commandText, con);
           cmd.CommandType = CommandType.StoredProcedure;
           cmd.Parameters.AddRange(parameters);

           if (con.State == ConnectionState.Closed)
               con.Open();

           int rowsAffected = cmd.ExecuteNonQuery();

           if (con.State == ConnectionState.Open)
               con.Close();

           return rowsAffected;
       }