http://consultingblogs.emc.com/kenibarwick/archive/2004/11/05/Request-for-the-permission-of-type-System.Net.WebPermission_2100210021002100_.aspx

I am using proxy to send sms from client site.
Below is my code which runs nicely on localhost but not working on Live Server, it gives me error like below:

Request for the permission of type ‘System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089′ failed.

Dim result As String = “”
Dim request As WebRequest = Nothing
Dim response As HttpWebResponse = Nothing

Dim sendToPhoneNumber As String = CStr(O)
Dim userid As String = “xyzabcd”
Dim passwd As String = “abcsjklp”
Dim msgs As String = msgBox
Dim url As String

url = “http://x.y.com/I/rest?method=sendMessage&send_to=” & sendToPhoneNumber & “&msg=” & msgs & “&userid=” & userid & “&password=” & passwd & “&v=1.1″

request = WebRequest.Create(url)
Dim proxy As New webProxy(“http://x.y.com/I/”, True)
proxy.UseDefaultCredentials = True
proxy.Credentials = New NetworkCredential(“xxxxxx”, “yyyyy”, “http://11.11.11.11:80/”)

WebRequest.DefaultWebProxy = proxy
request.Proxy = proxy
response = request.GetResponse()
Dim stream As Stream = response.GetResponseStream()
Dim ec As Encoding = System.Text.Encoding.GetEncoding(“utf-8″)
Dim reader As StreamReader = New System.IO.StreamReader(stream, ec)
result = reader.ReadToEnd()
Console.WriteLine(result)
reader.Close()
stream.Close()