How to Send mail from visual basic 2010 professional

I want to send a mail using gmail id, my code is as here under, but its occurred error...please help me out of this issue.

Imports System.Net Imports System.Net.Mail

Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    MsgBox("This will send a mail...")
    Try

        Dim smtpserver As New SmtpClient()
        Dim mail As New MailMessage()
        smtpserver.Credentials = New Net.NetworkCredential("myname@gmail.com", "password")
        smtpserver.Port = 465
        smtpserver.Host = "smtp.gmail.com"
        mail = New MailMessage()
        mail.From = New MailAddress("myname@gmail.com")
        mail.To.Add("to mail id")
        mail.Subject = "Test by bharat"
        mail.Body = "hello ooooooooooooooooooooooo"
        smtpserver.Send(mail)
        MsgBox("Mail Sent")
    Catch ex As Exception
        MsgBox(ex.ToString)
        Close()
    End Try


End Sub

End Class