VB.NET Requires Chilkat v11.7.0+

Code Blocks and Code Spans in PDF to Markdown

See more PDF Text Extraction Examples

Demonstrates how monospaced text is converted by the "markdown" operation: a monospaced block becomes a fenced code block and a monospaced run inside a sentence becomes a code span. Set "code" to false to treat it as ordinary text. VB.NET

Dim success As Boolean = False

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  The PDF used in this example is available at code_block.pdf

Dim pdf As New Chilkat.Pdf
success = pdf.LoadFile("qa_data/pdf/code_block.pdf")
If (success = False) Then
    Debug.WriteLine(pdf.LastErrorText)
    Exit Sub
End If


Dim json As New Chilkat.JsonObject
Dim jsonOut As New Chilkat.JsonObject

success = pdf.ExtractText("markdown",json,jsonOut)
If (success = False) Then
    Debug.WriteLine(pdf.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("---- default (code: true) ----")
Debug.WriteLine(jsonOut.StringOf("markdown"))

json.UpdateBool("code",False)
success = pdf.ExtractText("markdown",json,jsonOut)
If (success = False) Then
    Debug.WriteLine(pdf.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("---- code: false ----")
Debug.WriteLine(jsonOut.StringOf("markdown"))

'  Sample output:

'  ---- default (code: true) ----
'  <!-- page 1 -->
'  
'  # Extracting Text
'  
'  Load the PDF and call `ExtractText` with the operation and an options object. The result is returned as JSON:
'  
'  ```
'  new Pdf pdf;
'  success = pdf.LoadFile("report.pdf");
'  new JsonObject json;
'  new JsonObject jsonOut;
'  success = pdf.ExtractText("text",json,jsonOut);
'  println jsonOut.StringOf("text");
'  ```
'  
'  An empty options object extracts every page with the default clean-up. Set `pages` to limit the extraction.
'  ---- code: false ----
'  <!-- page 1 -->
'  
'  # Extracting Text
'  
'  Load the PDF and call ExtractText with the operation and an options object. The result is returned as JSON:
'  
'  new Pdf pdf; success = pdf.LoadFile("report.pdf"); new JsonObject json; new JsonObject jsonOut; success = pdf.ExtractText("text",json,jsonOut); println jsonOut.StringOf("text");
'  
'  An empty options object extracts every page with the default clean-up. Set pages to limit the extraction.