How do I use this fuctions to edit a paste in a VB.NET console ?

Public Class Pastebin
    Public Function NewPaste(ByVal Content As String)
        Dim api_dev_key As String = "" '<-- Your API key here
        Dim api_paste_code As String = URLEncode(Content)
        Dim api_paste_private As String = "2"
        'Dim api_paste_name As String = URLEncode(Name)
        Dim api_paste_expire_date As String = "10M"
        Dim api_paste_format As String = "php"
        Dim api_user_key As String = ""
        Dim Response As String = HttpPost("http://pastebin.com/api/api_post.php", "api_option=paste&api_dev_key=" & api_dev_key & "&api_paste_code=" & api_paste_code)
        If Response.Contains("Bad API request") = False Then
            Return Raw(Response)
        Else
            Return "Error"
        End If
    End Function
    Private Function URLEncode(ByVal EncodeStr As String) As String
        Dim i As Integer
        Dim erg As String
        erg = EncodeStr
        erg = Replace(erg, "%", Chr(1))
        erg = Replace(erg, "+", Chr(2))
        For i = 0 To 255
            Select Case i
                Case 37, 43, 48 To 57, 65 To 90, 97 To 122
                Case 1
                    erg = Replace(erg, Chr(i), "%25")
                Case 2
                    erg = Replace(erg, Chr(i), "%2B")
                Case 32
                    erg = Replace(erg, Chr(i), "+")
                Case 3 To 15
                    erg = Replace(erg, Chr(i), "%0" & Hex(i))
                Case Else
                    erg = Replace(erg, Chr(i), "%" & Hex(i))
            End Select
        Next
        Return erg
    End Function
    Public Function Raw(ByVal URL As String)
        Dim ID As String = URL.Substring(URL.LastIndexOf("/") + 1)
        ID = "http://pastebin.com/raw.php?i=" & ID
        Return ID
    End Function
    Private Function HttpPost(ByVal URL As String, ByVal Data As String)
        Dim request As WebRequest = WebRequest.Create(URL)
        request.Method = "POST"
        Dim byteArray As Byte() = Encoding.UTF8.GetBytes(Data)
        request.ContentType = "application/x-www-form-urlencoded"
        request.ContentLength = byteArray.Length
        Dim dataStream As Stream = request.GetRequestStream()
        dataStream.Write(byteArray, 0, byteArray.Length)
        dataStream.Close()
        Dim response As WebResponse = request.GetResponse()
        'Console.WriteLine(CType(response, HttpWebResponse).StatusDescription)
        dataStream = response.GetResponseStream()
        Dim reader As New StreamReader(dataStream)
        Dim responseFromServer As String = reader.ReadToEnd()
        reader.Close()
        dataStream.Close()
        response.Close()
        Return responseFromServer
    End Function
End Class