Email To Include Content Of TextBox?

I have written a Web Page which allows Club members to send a message to Committee Members. The Input Page is a Details View which allows input of the Members name, Email Address and a text message - this is stored in a SQL Table.

Currently the Page then sends an email to Committee Members which advises that there is a message on the website. The Committee then have to log on and access the Message page to read the message.

I would like to include in the email the content of TextBoxes from the Details View.

The Code I am currently using for sending the email is below

Imports System.Net.Mail
Partial Class NonAdmin_ContactUs
Inherits System.Web.UI.Page
Protected Sub ContactUs_ItemInserting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewInsertEventArgs) Handles ContactUs.ItemInserting
e.Values("Date") = DateTime.Now
Dim textSubject As String = "New Message"
Dim textBody As String = "There is a new Message on the Malling Photographic Society Website. Please advise the rest of the Committee if you are handling this message"
Dim mailMessage As New System.Net.Mail.MailMessage
Dim MailClient As SmtpClient = New SmtpClient
mailMessage.From = New MailAddress("jpoll@sky.com")
mailMessage.To.Add(New MailAddress("committee@yahoogroups.co.uk"))
mailMessage.Subject = textSubject
mailMessage.Body = textBody
MailClient.Send(mailMessage)
End Sub
End Class