Advanced Conversion Options - VB.NET
PDF To CSV sample in VB.NET demonstrating ‘Advanced Conversion Options’
Module1.vb
Imports System.IO
Imports System.Net
Imports System.Threading
Imports Newtonsoft.Json
Imports Newtonsoft.Json.Linq
' Cloud API asynchronous "PDF To CSV" job example.
' Allows to avoid timeout errors when processing huge or scanned PDF documents.
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.amazonaws.com/files/demo-files/cloud-api/pdf-to-csv/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 CSV file name
Const DestinationFile As String = ".\result.csv"
' Some of advanced options available through profiles:
' (JSON can be single/double-quoted and contain comments.)
' {
' "profiles": [
' {
' "profile1": {
' "CSVSeparatorSymbol": ",", // Separator symbol.
' "CSVQuotaionSymbol": "\"", // Quotation symbol.
' "ExtractInvisibleText": true, // Invisible text extraction. Values: true / false
' "ExtractShadowLikeText": true, // Shadow-like text extraction. Values: true / false
' "LineGroupingMode": "None", // Values: "None", "GroupByRows", "GroupByColumns", "JoinOrphanedRows"
' "ColumnDetectionMode": "ContentGroupsAndBorders", // Values: "ContentGroupsAndBorders", "ContentGroups", "Borders", "BorderedTables"
' "Unwrap": false, // Unwrap grouped text in table cells. Values: true / false
' "ShrinkMultipleSpaces": false, // Shrink multiple spaces in table cells that affect column detection. Values: true / false
' "DetectNewColumnBySpacesRatio": 1, // Spacing ratio that affects column detection.
' "CustomExtractionColumns": [ 0, 50, 150, 200, 250, 300 ], // Explicitly specify columns coordinates for table extraction.
' "CheckPermissions": true, // Ignore document permissions. Values: true / false
' }
' }
' ]
' }
' Sample profile that sets advanced conversion options.
' Advanced options are properties of CSVExtractor class from ByteScout PDF Extractor SDK used in the back-end:
' https://cdn.bytescout.com/help/BytescoutPDFExtractorSDK/html/87ce5fa6-3143-167d-abbd-bc7b5e160fe5.htm
ReadOnly Profiles As String = File.ReadAllText("profile.json")
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")
' Prepare URL for `PDF To CSV` API call
Dim url As String = "https://api.pdf.co/v1/pdf/convert/to/csv"
' 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("pages", Pages)
parameters.Add("url", SourceFileUrl)
parameters.Add("profiles", Profiles)
' 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 CSV file
Dim resultFileUrl = json("url").ToString()
' Download CSV file
webClient.DownloadFile(resultFileUrl, DestinationFile)
Console.WriteLine("Generated CSV file saved as {0}", 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
profile.json
{
"profiles": [
{
"profile1": {
"OCRMode": "TextFromImagesAndVectorsAndFonts",
"CSVSeparatorSymbol": "|"
}
}
]
}
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)
return to the previous page explore PDF To CSV endpoint
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