Module1.vb
Imports System.IO
Imports System.Net
Imports Newtonsoft.Json.Linq
Module Module1
' (!) If you are getting '(403) Forbidden' error please ensure you have set the correct API_KEY
' The authentication key (API Key).
' Get your own by registering at https://secure.bytescout.com/users/sign_up
Const API_KEY As String = "***********************************"
' Source PDF file to split
const SourceFile as String = ".\sample.pdf"
' Comma-separated list of page numbers (or ranges) to process. Example: '1,3-5,7-'.
const Pages as String = "1-2,3-"
Sub Main()
' Create standard .NET web client instance
Dim webClient As WebClient = New WebClient()
' Set API Key
webClient.Headers.Add("x-api-key", API_KEY)
' 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
' * If you already have a direct file URL, skip to the step 3.
' Prepare URL for `Get Presigned URL` API call
Dim query As string = Uri.EscapeUriString(string.Format(
"https://bytescout.io/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}",
Path.GetFileName(SourceFile)))
Try
' Execute request
Dim response As string = webClient.DownloadString(query)
' Parse JSON response
Dim json As JObject = JObject.Parse(response)
If json("error").ToObject(Of Boolean) = False Then
' Get URL to use for the file upload
Dim uploadUrl As string = json("presignedUrl").ToString()
' Get URL of uploaded file to use with later API calls
Dim uploadedFileUrl As string = json("url").ToString()
' 2. UPLOAD THE FILE TO CLOUD.
webClient.Headers.Add("content-type", "application/octet-stream")
webClient.UploadFile(uploadUrl, "PUT", SourceFile) ' You can use UploadData() instead if your file is byte array or Stream
' 3. SPLIT UPLOADED PDF
' Prepare URL for `Split PDF` API call
query = Uri.EscapeUriString(String.Format(
"https://bytescout.io/v1/pdf/split?pages={0}&url={1}",
Pages,
uploadedFileUrl))
' Execute request
response = webClient.DownloadString(query)
' Parse JSON response
json = JObject.Parse(response)
If json("error").ToObject(Of Boolean) = False Then
' Download generated PDF files
Dim part As Integer = 1
For Each token As JToken In json("urls")
Dim resultFileUrl As string = token.ToString()
Dim localFileName As String = String.Format(".\part{0}.pdf", part)
webClient.DownloadFile(resultFileUrl, localFileName)
Console.WriteLine("Downloaded ""{0}"".", localFileName)
part = part + 1
Next
Else
Console.WriteLine(json("message").ToString())
End If
End If
Catch ex As WebException
Console.WriteLine(ex.ToString())
End Try
webClient.Dispose()
Console.WriteLine()
Console.WriteLine("Press any key...")
Console.ReadKey()
End Sub
End Module