ByteScout Cloud API Server - PDF To HTML API - VB.NET - Convert PDF To HTML From URL Asynchronously - ByteScout

ByteScout Cloud API Server – PDF To HTML API – VB.NET – Convert PDF To HTML From URL Asynchronously

  • Home
  • /
  • Articles
  • /
  • ByteScout Cloud API Server – PDF To HTML API – VB.NET – Convert PDF To HTML From URL Asynchronously

How to convert PDF to HTML from URL asynchronously for PDF to HTML API in VB.NET and ByteScout Cloud API Server

Step By Step Instructions on how to convert PDF to HTML from URL asynchronously for PDF to HTML API in VB.NET

This page displays the code samples for programming in VB.NET. ByteScout Cloud API Server was designed to assist PDF to HTML API in VB.NET. ByteScout Cloud API Server is the ready to use Web API Server that can be deployed in less than 30 minutes into your own in-house server or into private cloud server. Can store data on in-house local server based storage or in Amazon AWS S3 bucket. Processing data solely on the server using buil-in ByteScout powered engine, no cloud services are used to process your data!.

The SDK samples displayed below below explain how to quickly make your application do PDF to HTML API in VB.NET with the help of ByteScout Cloud API Server. Open your VB.NET project and simply copy & paste the code and then run your app! Enjoy writing a code with ready-to-use sample VB.NET codes to implement PDF to HTML API using ByteScout Cloud API Server.

ByteScout Cloud API Server – free trial version is available on our website. Also, there are other code samples to help you with your VB.NET application included into trial version.

On-demand (REST Web API) version:
 Web API (on-demand version)

On-premise offline SDK for Windows:
 60 Day Free Trial (on-premise)

Module1.vb
      
Imports System.IO Imports System.Net Imports System.Threading Imports Newtonsoft.Json.Linq ' Please NOTE: In this sample we're assuming Cloud Api Server is hosted at "https://localhost". ' If it's not then please replace this with with your hosting url. ' Cloud API asynchronous "PDF To HTML" job example. ' Allows to avoid timeout errors when processing huge or scanned PDF documents. Module Module1 ' Direct URL of source PDF file. Const SourceFileUrl As String = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-to-html/sample.pdf" ' Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. Const Pages As String = "" ' PDF document password. Leave empty for unprotected documents. Const Password As String = "" ' Destination HTML file name Const DestinationFile As String = ".\result.html" ' Set to `true` to get simplified HTML without CSS. Default is the rich HTML keeping the document design. Const PlainHtml As Boolean = False ' Set to `true` if your document has the column layout like a newspaper. Const ColumnLayout As Boolean = False ' (!) Make asynchronous job Const Async As Boolean = True Sub Main() ' Create standard .NET web client instance Dim webClient As WebClient = New WebClient() ' Prepare URL for `PDF To HTML` API call Dim query As String = Uri.EscapeUriString(String.Format( "https://localhost/pdf/convert/to/html?name={0}&password={1}&pages={2}&simple={3}&columns={4}&url={5}&async={6}", Path.GetFileName(DestinationFile), Password, Pages, PlainHtml, ColumnLayout, SourceFileUrl, Async)) 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 ' Asynchronous job ID Dim jobId As String = json("jobId").ToString() ' URL of generated HTML file that will available after the job completion Dim resultFileUrl As String = json("url").ToString() ' Check the job status in a loop. ' If you don't want to pause the main thread you can rework the code ' to use a separate thread for the status checking and completion. Do Dim status As String = CheckJobStatus(jobId) ' Possible statuses: "working", "failed", "aborted", "success". ' Display timestamp and status (for demo purposes) Console.WriteLine(DateTime.Now.ToLongTimeString() + ": " + status) If status = "success" Then ' Download HTML file webClient.DownloadFile(resultFileUrl, DestinationFile) Console.WriteLine("Generated HTML file saved as ""{0}"" file.", DestinationFile) Exit Do ElseIf status = "working" Then ' Pause for a few seconds Thread.Sleep(3000) Else Console.WriteLine(status) Exit Do End If Loop Else Console.WriteLine(json("message").ToString()) 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 Function CheckJobStatus(jobId As String) As String Using webClient As WebClient = New WebClient() Dim url As String = "https://localhost/job/check?jobid=" + jobId Dim response As String = webClient.DownloadString(url) Dim json As JObject = JObject.Parse(response) Return Convert.ToString(json("status")) End Using End Function End Module

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Cloud API Server Home Page

Explore ByteScout Cloud API Server Documentation

Explore Samples

Sign Up for ByteScout Cloud API Server Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

packages.config
      
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net40" /> </packages>

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Cloud API Server Home Page

Explore ByteScout Cloud API Server Documentation

Explore Samples

Sign Up for ByteScout Cloud API Server Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

VIDEO

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Cloud API Server Home Page

Explore ByteScout Cloud API Server Documentation

Explore Samples

Sign Up for ByteScout Cloud API Server Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Tutorials:

prev
next