<asp:SqlDataSource ID="userCourse" runat="server" ConnectionString='<%$ ConnectionStrings:ConnectionString %>' SelectCommand="SELECT DISTINCT tblCourse.courseTitle, tblCourse.advisorOfStudiesID, tblPersonalInfo.firstName, tblPersonalInfo.lastName, tblPersonalInfo.email FROM tblCourse INNER JOIN tblAdvisorOfStudies ON tblCourse.advisorOfStudiesID = tblAdvisorOfStudies.advisorOfStudiesID INNER JOIN tblUsers ON tblAdvisorOfStudies.userID = tblUsers.userID INNER JOIN tblPersonalInfo ON tblUsers.personalInfoID = tblPersonalInfo.personalInfoID WHERE (tblCourse.courseID = @userID)">
                                <SelectParameters>
                                    <asp:SessionParameter SessionField="userID" Name="userID"></asp:SessionParameter>
                                </SelectParameters>
             </asp:SqlDataSource>
        <asp:ListView ID="ListView1" runat="server" DataSourceID="userCourse">
                                <ItemTemplate>
                                                    <asp:Label ID="aosemail"  runat="server" Text='<%# Eval("email") %>' />
                                                    <asp:Label ID="aosname" hidden runat="server" Text='<%# Eval("firstName") %>' />
                                </ItemTemplate>
                            </asp:ListView>

private bool SendEmail()
{
    string recipient = aosemail; //AOS Email textbox should go here
    MailMessage mm = new MailMessage("CSC3047@gmail.com", recipient);
    mm.Subject = "Student has chosen Manual Enrollment Process!";
                        //AOS name textbox will be here
    mm.Body = "Hi "   + aosename+ "<br><br>This is a quick email to inform you that " + Name.Text.ToString() + " has chosen the manual enrollment process. The reason we are emailing you is that you are their Advisor of Studies. Please email the user on " + Email.Text.ToString() + " <br><br>Regards";
    mm.IsBodyHtml = true;
    SmtpClient smtp = new SmtpClient();
    smtp.Host = "smtp.gmail.com";
    smtp.EnableSsl = true;
    NetworkCredential NetworkCred = new NetworkCredential();
    NetworkCred.UserName = "*************";
    NetworkCred.Password = "*********";
    smtp.UseDefaultCredentials = true;
    smtp.Credentials = NetworkCred;
    smtp.Port = 587;
    smtp.Send(mm);
    return true;
}