Fill PDF Forms Simplified - VB.NET
PDF Fill PDF Forms sample in VB.NET demonstrating ‘Fill PDF Forms Simplified’
Module1.vb
Imports System.IO
Imports System.Net
Imports Newtonsoft.Json
Imports Newtonsoft.Json.Linq
Module Module1
' The authentication key (API Key).
' Get your own by registering at https://app.pdf.co
Const API_KEY As String = "***********************************"
' Direct URL of source PDF file.
' You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
Const SourceFileUrl As String = "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf"
' PDF document password. Leave empty for unprotected documents.
Const Password As String = ""
' File name for generated output. Must be a String
Const FileName As String = "f1040-form-filled"
' Destination PDF file name
Const DestinationFile As String = ".\result.pdf"
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)
' Set JSON content type
webClient.Headers.Add("Content-Type", "application/json")
' Values to fill out pdf fields with built-in pdf form filler
' To fill fields in PDF form, use the following format page;fieldName;value for example: 0;editbox1;text Is here.
' To fill checkbox, use true, for example: 0;checkbox1;true.
' To separate multiple objects, use | separator.
' To get the list of all fillable fields in PDF form please use /pdf/info/fields endpoint.
Dim fieldString As String = "1;topmostSubform[0].Page1[0].f1_02[0];John A. Doe|1;topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1];true|1;topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0];123456789"
' If enabled, Runs processing asynchronously. Returns Use JobId that you may use with /job/check to check state of the processing (possible states working,
Dim async As Boolean = False
' Prepare URL of "PDF Edit" endpoint
Dim url As String = "https://api.pdf.co/v1/pdf/edit/add"
' Prepare requests params as JSON
' See documentation: https : //apidocs.pdf.co
Dim parameters As New Dictionary(Of String, Object)
parameters.Add("name", Path.GetFileName(DestinationFile))
parameters.Add("password", Password)
parameters.Add("url", SourceFileUrl)
parameters.Add("async", async)
parameters.Add("fieldsString", fieldString)
' Convert dictionary of params to JSON
Dim jsonPayload As String = JsonConvert.SerializeObject(parameters)
Try
' Execute POST request with JSON payload
Dim response As String = webClient.UploadString(url, jsonPayload)
' 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
PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.
Download Source Code (.zip)
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