ByteScout Cloud API Server - PDF Information API - VB.NET - Get PDF Info From Uploaded File - ByteScout

ByteScout Cloud API Server – PDF Information API – VB.NET – Get PDF Info From Uploaded File

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How to get PDF info from uploaded file for PDF information API in VB.NET using ByteScout Cloud API Server

How to get PDF info from uploaded file in VB.NET with easy ByteScout code samples to make PDF information API. Step-by-step tutorial

The sample source codes on this page will show you how to create PDF information API in VB.NET. PDF information API in VB.NET can be applied with ByteScout Cloud API Server. ByteScout Cloud API Server is API server that is ready to use and can be installed and deployed in less than 30 minutes on your own Windows server or server in a cloud. It can save data and files on your local server-based file storage or in Amazon AWS S3 storage. Data is processed solely on the API server and is powered by ByteScout engine, no cloud services or Internet connection is required for data processing..

The SDK samples displayed below below explain how to quickly make your application do PDF information API in VB.NET with the help of ByteScout Cloud API Server. Follow the tutorial and copy – paste code for VB.NET into your project’s code editor. Want to see how it works with your data then code testing will allow the function to be tested and work properly.

Free! Free! Free! ByteScout free trial version is available for FREE download from our website. Programming tutorials along with source code samples are assembled.

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Module1.vb
      
Imports System.IO Imports System.Net 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. Module Module1 ' Source PDF file to get information const SourceFile as string = ".\sample.pdf" ' Comma-separated list of barcode types to search. ' See valid barcode types in the documentation https://secure.bytescout.com/cloudapi.html#api-Default-barcodeReadFromUrlGet Const BarcodeTypes As String = "Code128,Code39,Interleaved2of5,EAN13" ' Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. Const Pages As String = "" Sub Main() ' Create standard .NET web client instance Dim webClient As WebClient = New WebClient() ' 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://localhost/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. GET INFORMATION FROM UPLOADED FILE ' Prepare URL for `PDF Info` API call query = Uri.EscapeUriString(String.Format( "https://localhost/pdf/info?url={0}", uploadedFileUrl)) ' Execute request response = webClient.DownloadString(query) ' Parse JSON response json = JObject.Parse(response) If json("error").ToObject(Of Boolean) = False Then ' Display PDF document information For Each token As JToken In json("info") Dim [property] as JProperty = token Console.WriteLine("{0}: {1}", [property].Name, [property].Value) 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

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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

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