Send e-mail through VB.NET using SMTP - vb.net

Question

I really started to get confused about sending an e-mail to (example: test#test.com) through VB.NET and for sure using SMTP.
I want the mail to be sent when Button1 is clicked (example).
So I started by a code like that
Imports System.Net.Mail
Public Class MyProgram
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Using message As New MailMessage()
'set to the from, to and subject fields
message.From = New MailAddress("sender#sender.com")
message.[To].Add(New MailAddress("test#test.com"))
message.Subject = "Test"
'code the message body
Dim MsgBody As String
MsgBody = TextBox1.Text.ToString() & vbCr & _
TextBox2.Text.ToString()
message.Body = MsgBody
Dim client As New SmtpClient()
client.Host = "smtp.example.com"
client.Port = "465"
client.EnableSsl = True
client.Credentials = New Net.NetworkCredential("USERNAME#MAIL.COM", "PASSWORD")
client.Send(message)
End Using
'display submitted box
MessageBox.Show("Congrats", "Congratulations!")
'close form
Me.Close()
End Sub
End Class
And I get:
Next, I tried another code (which is) ...
Imports System.Net.Mail
Public Class MyProgram
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim Smtp_Server As New SmtpClient
Dim e_mail As New MailMessage()
Smtp_Server.UseDefaultCredentials = False
Smtp_Server.Credentials = New Net.NetworkCredential("USERNAME#MAIL.COM", "PASSWORD")
Smtp_Server.Port = 465
Smtp_Server.EnableSsl = True
Smtp_Server.Host = "smtp.example.com"
e_mail = New MailMessage()
e_mail.From = New MailAddress("sender#sender.com")
e_mail.To.Add("test#test.com")
e_mail.Subject = "Test E-mail Address Sent by My Program"
e_mail.IsBodyHtml = False
e_mail.Body = "Test"
Smtp_Server.Send(e_mail)
MsgBox("Mail Sent")
End Sub
End Class
And now I get the following in the Debugger:
And at last the e-mail isn't sent!
Please don't say "sender#sender.com" isn't configured as a sender e-mail address because it is!
I really need help!
Thanks. :-)