ASP.NET

Imports System.Net.Mail
Imports Microsoft.VisualBasic
Imports System.Data
Imports System.Net
Imports System.Net.Dns
Imports System.Web.UI.Page
Imports System.Math
Imports System.Text.RegularExpressions
Imports System.Data.SqlClient

Public Class MailHelper
    ''' <summary>
    ''' Sends an mail message
    ''' </summary>
    ''' <param name="from">Sender address</param>
    ''' <param name="recepient">Recepient address</param>
    ''' <param name="bcc">Bcc recepient</param>
    ''' <param name="cc">Cc recepient</param>
    ''' <param name="subject">Subject of mail message</param>
    ''' <param name="body">Body of mail message</param>
    Public Sub SendMailMessage(ByVal from As String, ByVal recepient As String, ByVal bcc As String, ByVal cc As String, _
        ByVal subject As String, ByVal body As String)
        ' Instantiate a new instance of MailMessage
        Dim mMailMessage As New MailMessage()

        ' Set the sender address of the mail message
        mMailMessage.From = New MailAddress(from)
        ' Set the recepient address of the mail message
        mMailMessage.To.Add(New MailAddress(recepient))
        ' Check if the bcc value is null or an empty string
        If Not bcc Is Nothing And bcc <> String.Empty Then
            ' Set the Bcc address of the mail message
            mMailMessage.Bcc.Add(New MailAddress(bcc))
        End If
        ' Check if the cc value is null or an empty value
        If Not cc Is Nothing And cc <> String.Empty Then
            ' Set the CC address of the mail message
            mMailMessage.CC.Add(New MailAddress(cc))
        End If
        ' Set the subject of the mail message
        mMailMessage.Subject = subject
        ' Set the body of the mail message
        mMailMessage.Body = body
        ' Secify the format of the body as HTML
        mMailMessage.IsBodyHtml = True
        ' Set the priority of the mail message to normal
        mMailMessage.Priority = MailPriority.Normal
        ' Instantiate a new instance of SmtpClient
        Dim mSmtpClient As New SmtpClient()
   
       
        mSmtpClient.Host = "------"
        mSmtpClient.Port = "---------"
        mSmtpClient.Credentials = New System.Net.NetworkCredential("-----------", "----------")
        ' Send the mail message
        mSmtpClient.Send(mMailMessage)
    End Sub
End Class Use this class

void button_click(object sender,EventArgs args)
{
   // do db insertion
   Response.Redirect("success.aspx");
}