ByteScout Cloud API Server - PDF Text Search API - VB.NET - PDF Text Search from Uploaded File - ByteScout

ByteScout Cloud API Server – PDF Text Search API – VB.NET – PDF Text Search from Uploaded File

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How to PDF text search API in VB.NET and ByteScout Cloud API Server

Continuous learning is a crucial part of computer science and this tutorial shows how to PDF text search API in VB.NET

Every ByteScout tool includes simple example VB.NET source codes that you can get here or in the folder with installed ByteScout product. ByteScout Cloud API Server: the ready to deploy Web API Server that can be deployed in less than thirty minutes into your own in-house Windows server (no Internet connnection is required to process data!) 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 built-in ByteScout powered engine, no cloud services are used to process your data!. It can PDF text search API in VB.NET.

This prolific sample source code in VB.NET for ByteScout Cloud API Server contains various functions and other necessary options you should do calling the API to PDF text search API. IF you want to implement the functionality, just copy and paste this code for VB.NET below into your code editor with your app, compile and run your application. Complete and detailed tutorials and documentation are available along with installed ByteScout Cloud API Server if you’d like to learn more about the topic and the details of the API.

Trial version of ByteScout Cloud API Server is available for free. Source code samples are included to help you with your VB.NET app.

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

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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 Const SourceFile As String = ".\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 = "" ' Search string. Const SearchString As String = "\d{1,}\.\d\d" 'Regular expression To find numbers Like '100.00' ' Note: Do Not use `+` char in regex, but use `{1,}` instead. ' `+` char Is valid for URL And will Not be escaped, And it will become a space char on the server side. ' Enable regular expressions (Regex) Const RegexSearch As Boolean = True 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. MAKE UPLOADED PDF FILE SEARCHABLE ' Prepare URL for PDF text search API call. query = Uri.EscapeUriString( String.Format("https://localhost/pdf/find?password={0}&pages={1}&url={2}&searchString={3}&regexSearch={4}", Password, Pages, uploadedFileUrl, SearchString, RegexSearch)) ' Execute request response = webClient.DownloadString(query) ' Parse JSON response json = JObject.Parse(response) If json("error").ToObject(Of Boolean) = False Then For Each item As JToken In json("body") Console.WriteLine({code}quot;Found text {item("text")} at coordinates {item("left")}, {item("top")}") 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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