Send e-mail after update statement in ASPX - asp.net

Question

I'm building for my project work at school a website.
The main idea is that users can report damage or report a non functioning computer.
Then the IT department can give in if they've taken any steps try fixing it and there is also a checkbox if the problem is dealth with. If the checkbox in the formview is checked and updated, there should be sent an automatic e-mail to the original user with a message that the problem is solved. I've done everything and everything works, except for the e-mail part.
Can anybody give me some advice in how I should do this? There is an unique datasource who handeles the update statement.
Yours sincerely;
A.
Here is my code:
<asp:AccessDataSource ID="accAfgehandeld" runat="server"
DataFile="~/App_data/dbMeldingen.mdb"
DeleteCommand="DELETE FROM [tblMeldingen] WHERE [MeldingID] = ?"
InsertCommand="INSERT INTO [tblMeldingen] ([MeldingID], [Afgehandeld], [Categorie]) VALUES (?, ?, ?)"
SelectCommand="SELECT [MeldingID], [Afgehandeld], [Categorie] FROM [tblMeldingen] WHERE ([MeldingID] = ?)"
UpdateCommand="UPDATE [tblMeldingen] SET [Afgehandeld] = true, [Categorie] = ? WHERE [MeldingID] = ?"
OnUpdated="OnDSUpdatedHandler">
<DeleteParameters>
<asp:Parameter Name="MeldingID" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="MeldingID" Type="Int32" />
<asp:Parameter Name="Afgehandeld" Type="Boolean" />
<asp:Parameter Name="Categorie" Type="Int32" />
</InsertParameters>
<SelectParameters>
<asp:QueryStringParameter Name="MeldingID" QueryStringField="id" Type="Int32" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="Categorie" Type="Int32" />
<asp:Parameter Name="MeldingID" Type="Int32" />
</UpdateParameters>
</asp:AccessDataSource>
and my script in the same page:
<%# Control Language="VB" AutoEventWireup="false" CodeFile="meldingendetails.ascx.vb" Inherits="meldingendetails" %>
<script runat="server">
private void OnDSUpdatedHandler(Object sender, e.Updated) {
if (e.AffectedRows > 0)
{
MailMessage mailMessage = new MailMessage();
SmtpClient smtpClient = new SmtpClient("smtp.your-isp.com");
smtpClient.Send(mailMessage);
}
}
</script>
Visual studio gives an error over and over again with my script, even from the void part...

Answer 1

Set OnUpdated-handler
<asp:SqlDataSource
...
UpdateCommand="..."
OnUpdated="OnDSUpdatedHandler">
</asp:SqlDataSource>
and use it to send email
<script runat="server">
private void OnDSUpdatedHandler(Object source, SqlDataSourceStatusEventArgs e) {
if (e.AffectedRows > 0) {
MailMessage mailMessage = new MailMessage();
...
SmtpClient smtpClient = new SmtpClient("smtp.your-isp.com");
smtpClient.Send(mailMessage);
}
}
</script>