ByteScout simple and easy to understand tutorials are planned to describe the code for both VB.NET beginners and advanced programmers. 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.. It can be applied to add text and images to PDF using 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 add text and images to PDF. Follow the instructions from scratch to work and copy the VB.NET code. Use of ByteScout Cloud API Server in VB.NET is also described in the documentation included along with the product.
ByteScout provides the free trial version of ByteScout Cloud API Server along with the documentation and source code samples.
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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
' Direct URL of source PDF file.
Const SourceFileUrl As String = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/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 PDF file name
Const DestinationFile As String = ".\result.pdf"
' Image params
Private Const Type1 As String = "image"
Private Const X1 As Int32 = 400
Private Const Y1 As Int32 = 20
Private Const Width1 As Int32 = 119
Private Const Height1 As Int32 = 32
Private Const ImageUrl As String = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png"
Sub Main()
' Create standard .NET web client instance
Dim webClient As WebClient = New WebClient()
' * Add image *
' Prepare URL for `PDF Edit` API call
Dim query As String = Uri.EscapeUriString(String.Format(
"https://localhost/pdf/edit/add?name={0}&password={1}&pages={2}&url={3}&type={4}&x={5}&y={6}&width={7}&height={8}&urlimage={9}",
Path.GetFileName(DestinationFile),
Password,
Pages,
SourceFileUrl,
Type1,
X1,
Y1,
Width1,
Height1,
ImageUrl))
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 of generated PDF file
Dim resultFileUrl As String = json("url").ToString()
' Download PDF file
webClient.DownloadFile(resultFileUrl, DestinationFile)
Console.WriteLine("Generated PDF file saved as ""{0}"" file.", DestinationFile)
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
End Module
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<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Newtonsoft.Json" version="10.0.3" targetFramework="net40" />
</packages>
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
Get Your API Key
Explore Web API Docs
Explore Web API Samples
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
Get Your API Key
Explore Web API Docs
Explore Web API Samples