Sending Mail on CreateUserWizard...

Hi,
I set MailDefinition property in CreateUserWizard.
Also, 
I added this to Aspx.cs page:
<asp:CreateUserWizard ID="CreateUserWizard1" runat="server" OnSendingMail="Createuserwizard1_SendingMail">
        <WizardSteps>
            <asp:CreateUserWizardStep runat="server" />
            <asp:CompleteWizardStep runat="server" />
        </WizardSteps>
    </asp:CreateUserWizard>
and added the function: 
 void Createuserwizard1_SendingMail(object sender, MailMessageEventArgs e)
    {
        // Set MailMessage fields.
        e.Message.IsBodyHtml = fals ...