How To Used Webrequest to Website that have Cross-Site Request Forgery (CSRF protection)

The way that i do now is request "GET" to get the token and then Using request "POST" to submit the form.

but it return out like this

Code:
<h1>An Error Was Encountered</h1>
<p>The action you have requested is not allowed.</p> </div>
is there any way can i post my request through the Cross-Site Request Forgery

This is my code

Code:
        Dim request As HttpWebRequest = DirectCast(WebRequest.Create("url"), HttpWebRequest)
        request.CookieContainer = secure_cookie
        Dim response As HttpWebResponse = DirectCast(request.GetResponse(), HttpWebResponse)
        Dim reader As New StreamReader(response.GetResponseStream())
        Dim RawText As String = reader.ReadToEnd
        csrf_secure = Regex.Match(RawText, "csrf_secure" & Chr(34) & " value=" & Chr(34) & "(.*?)" & Chr(34) & "/>").Groups(1).Value
        Code = Regex.Match(RawText, "code" & Chr(34) & " value=" & Chr(34) & "(.*?)" & Chr(34) & "/>").Groups(1).Value
        TextBox1.Text = csrf_secure
        TextBox2.Text = Code
Code:
            Dim postData As String = "csrf_secure=" & csrf_secure & "&code=" & Code & "&mes=" & TextBox3.Text & "name=" & TextBox4.Text & "email=" & TextBox5.Text & "&g-recaptcha-response="
            Dim tempCookies As New CookieContainer
            Dim encoding As New UTF8Encoding
            Dim byteData As Byte() = System.Text.Encoding.UTF8.GetBytes(postData)
            Dim postReq As HttpWebRequest = DirectCast(WebRequest.Create("url"), HttpWebRequest)
            postReq.Method = "POST"
            postReq.KeepAlive = True
            postReq.CookieContainer = secure_cookie
            postReq.ContentType = "application/x-www-form-urlencoded"
            postReq.Referer = "url"
            postReq.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0"
            postReq.ContentLength = byteData.Length

            Dim postreqstream As Stream = postReq.GetRequestStream()
            postreqstream.Write(byteData, 0, byteData.Length)
            postreqstream.Close()

            Dim postresponse As HttpWebResponse
            postresponse = DirectCast(postReq.GetResponse(), HttpWebResponse)
            tempCookies.Add(postresponse.Cookies)
            Dim postreqreader As New StreamReader(postresponse.GetResponseStream())
            MsgBox(postreqreader.ReadToEnd())
            postresponse.Close()
            postreqreader.Close()