Convert PDF to RTF format in C# and VB.Net



Document .Net can help your application to convert a document from a one format to another.
You'll need only to Load() a document and Save() to a desired format.


            DocumentCore dc = DocumentCore.Load("...");
            dc.Save("....");

Document .Net supports these formats:

PDF DOCX RTF HTML Text Image
Create/Read/Write Create/Read/Write Create/Read/Write Create/Read/Write Create/Read/Write Create/Read(OCR)/Write

Complete code

using System.IO;
using SautinSoft.Document;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            ConvertFromFile();
            ConvertFromStream();
        }

        /// <summary>
        /// Convert PDF to RTF (file to file).
        /// </summary>
		/// <remarks>
        /// Details: https://sautinsoft.com/products/document/help/net/developer-guide/convert-pdf-to-rtf-in-csharp-vb.php
        /// </remarks>
        static void ConvertFromFile()
        {
            string inpFile = @"..\..\example.pdf";
            string outFile = @"Result.rtf";

            // Specifying PdfLoadOptions we explicitly set that a loadable document is PDF.
            PdfLoadOptions pdfLO = new PdfLoadOptions()
            {
                // 'false' - means to load vector graphics as is. Don't transform it to raster images.
                RasterizeVectorGraphics = false,

                // The PDF format doesn't have real tables, in fact it's a set of orthogonal graphic lines.
                // In case of 'true' the component will detect and recreate tables from graphic lines.
                DetectTables = false,

                // 'Disabled' - Never load embedded fonts in PDF. Use the fonts with the same name installed at the system or similar by font metrics.
				// 'Enabled' - Always load embedded fonts in PDF.
				// 'Auto' - Load only embedded fonts missing in the system. In other case, use the system fonts.
                PreserveEmbeddedFonts = PropertyState.Auto
            };

            DocumentCore dc = DocumentCore.Load(inpFile, pdfLO);

            dc.Save(outFile);

            // Open the result for demonstration purposes.
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
        }

        /// <summary>
        /// Convert PDF to RTF (using Stream).
        /// </summary>
		/// <remarks>
        /// Details: https://sautinsoft.com/products/document/help/net/developer-guide/convert-pdf-to-rtf-in-csharp-vb.php
        /// </remarks>
        static void ConvertFromStream()
        {

            // We need files only for demonstration purposes.
            // The conversion process will be done completely in memory.
            string inpFile = @"..\..\example.pdf";
            string outFile = @"ResultStream.rtf";
            byte[] inpData = File.ReadAllBytes(inpFile);
            byte[] outData = null;

            using (MemoryStream msInp = new MemoryStream(inpData))
            {

                // Specifying PdfLoadOptions we explicitly set that a loadable document is PDF.
                PdfLoadOptions pdfLO = new PdfLoadOptions()
                {
                    // 'false' - means to load vector graphics as is. Don't transform it to raster images.
                    RasterizeVectorGraphics = false,

                    // The PDF format doesn't have real tables, in fact it's a set of orthogonal graphic lines.
                    // In case of 'true' the component will detect and recreate tables from graphic lines.
                    DetectTables = false,

                    // 'Disabled' - Never load embedded fonts in PDF. Use the fonts with the same name installed at the system or similar by font metrics.
					// 'Enabled' - Always load embedded fonts in PDF.
					// 'Auto' - Load only embedded fonts missing in the system. In other case, use the system fonts.
                    PreserveEmbeddedFonts = PropertyState.Auto
                };

                // Load a document.
                DocumentCore dc = DocumentCore.Load(msInp, pdfLO);

                // Save the document to RTF format.
                using (MemoryStream outMs = new MemoryStream())
                {
                    dc.Save(outMs, new RtfSaveOptions() );
                    outData = outMs.ToArray();                    
                }
                // Show the result for demonstration purposes.
                if (outData != null)
                {
                    File.WriteAllBytes(outFile, outData);
                    System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
                }
            }
        }
    }
}

Download. 

        
            Imports System.IO
Imports SautinSoft.Document

Namespace Example
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			ConvertFromFile()
			ConvertFromStream()
		End Sub

		''' <summary>
		''' Convert PDF to RTF (file to file).
		''' </summary>
		''' <remarks>
		''' Details: https://sautinsoft.com/products/document/help/net/developer-guide/convert-pdf-to-rtf-in-csharp-vb.php
		''' </remarks>
		Private Shared Sub ConvertFromFile()
            Dim inpFile As String = "..\example.pdf"
            Dim outFile As String = "Result.rtf"

            ' Specifying PdfLoadOptions we explicitly set that a loadable document is PDF.
            Dim pdfLO As New PdfLoadOptions() With
            {
                .RasterizeVectorGraphics = False,
                .DetectTables = False,
                .PreserveEmbeddedFonts = PropertyState.Auto
            }

            ' RasterizeVectorGraphics = False
            ' This means to load vector graphics as is. Don't transform it to raster images.

            ' DetectTables = False
            ' This means don't detect tables.
            ' The PDF format doesn't have real tables, in fact it's a set of orthogonal graphic lines.
            ' Set it to 'True' and the component will detect and recreate tables from graphic lines.

            'PreserveEmbeddedFonts = PropertyState.Auto
            ' 'Disabled' - Never load embedded fonts in PDF. Use the fonts with the same name installed at the system or similar by font metrics.
			' 'Enabled' - Always load embedded fonts in PDF.
			' 'Auto' - Load only embedded fonts missing in the system. In other case, use the system fonts.

            Dim dc As DocumentCore = DocumentCore.Load(inpFile, pdfLO)
			dc.Save(outFile)

			' Open the result for demonstration purposes.
			System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
		End Sub

		''' <summary>
		''' Convert PDF to RTF (using Stream).
		''' </summary>
		''' <remarks>
		''' Details: https://sautinsoft.com/products/document/help/net/developer-guide/convert-pdf-to-rtf-in-csharp-vb.php
		''' </remarks>
		Private Shared Sub ConvertFromStream()

            ' We need files only for demonstration purposes.
            ' The conversion process will be done completely in memory.
            Dim inpFile As String = "..\example.pdf"
            Dim outFile As String = "ResultStream.rtf"
			Dim inpData() As Byte = File.ReadAllBytes(inpFile)
			Dim outData() As Byte = Nothing

			Using msInp As New MemoryStream(inpData)

                ' Specifying PdfLoadOptions we explicitly set that a loadable document is PDF.
                Dim pdfLO As New PdfLoadOptions() With
                {
                    .RasterizeVectorGraphics = False,
                    .DetectTables = False,
                    .PreserveEmbeddedFonts = PropertyState.Auto
                }

                ' RasterizeVectorGraphics = False
                ' This means to load vector graphics as is. Don't transform it to raster images.

                ' DetectTables = False
                ' This means don't detect tables.
                ' The PDF format doesn't have real tables, in fact it's a set of orthogonal graphic lines.
                ' Set it to 'True' and the component will detect and recreate tables from graphic lines.

                'PreserveEmbeddedFonts = PropertyState.Auto
                ' 'Disabled' - Never load embedded fonts in PDF. Use the fonts with the same name installed at the system or similar by font metrics.
			    ' 'Enabled' - Always load embedded fonts in PDF.
			    ' 'Auto' - Load only embedded fonts missing in the system. In other case, use the system fonts.

                ' Load a document.
                Dim dc As DocumentCore = DocumentCore.Load(msInp, pdfLO)

				' Save the document to RTF format.
				Using outMs As New MemoryStream()
					dc.Save(outMs, New RtfSaveOptions())
					outData = outMs.ToArray()
				End Using
				' Show the result for demonstration purposes.
				If outData IsNot Nothing Then
					File.WriteAllBytes(outFile, outData)
					System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
				End If
			End Using
		End Sub
	End Class
End Namespace

Download.

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We are developing .Net components since 2002. We know PDF, DOCX, RTF, HTML, XLSX and Images formats. If you need any assistance with creating, modifying or converting documents in various formats, we can help you. We will write any code example for you absolutely free.