I need help PlZ

[salam]

hii
Please, I need help if it's possible. I have project.
I ask user to enter URLs. So, I must to check if those URLs are valid or not.
I want to specify the proxy of my university to able check validity of URLs. Those codes not work at my university and that's becuse proxy. I trying a lot but I couldn’t get the connection of proxy.

I’m working in VB.Net not in ASP.Net
Proxy : 80

Please replay as soon as possible.
Thank you a lot……..

Sincerely,


Import System.Net
Public Class Form1


Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click



'Dim proxyObject As New WebProxy("http://webproxy:80/", True)
'Dim req As WebRequest = WebRequest.Creat("http://www.contoso.com")
'req.Proxy = proxyObject

If UrlIsValid(txtURL.Text) Then
MessageBox.Show("URL is valid")

Else
MessageBox.Show("URL is not valid")
End If
End Sub


Private Function UrlIsValid(ByVal url As String) As Boolean
Dim is_valid As Boolean = False
If url.ToLower().StartsWith("www.") Then url = "http://" & url

Dim web_response As HttpWebResponse = Nothing

Try

Dim web_request As HttpWebRequest = HttpWebRequest.Create(url)
web_response = DirectCast(web_request.GetResponse(), HttpWebResponse)

Return True
Catch ex As Exception
Return False
Finally
If Not (web_response Is Nothing) Then web_response.Close()
End Try
End Function
End Class

 

[PlausiblyDamp]

Could you not just set the web_request.Proxy property to an instance of the WebProxy class e.g.

   web.proxy  = New WebProxy("< proxy address", <port number>)

 

[salam]

thanks you sir,
You mean make class??

Any One can convert this codes to VB.NET??
This code in ASP.NET and i think they will help me to specify user name and password
//set the proxy for the SQU proxy server so that u can access website outside SQU
myHttpWebRequest.Proxy = WebProxy.GetDefaultProxy();
myHttpWebRequest.Proxy.Credentials = CredentialCache.DefaultCredentials;
myHttpWebRequest.Proxy.Credentials = new System.Net.NetworkCredential(SQUlogin, SQUpassword)

 

[PlausiblyDamp]

The code you posted should work just fine if you remove the ";" from the end of each line.