How to load a PDF document in C# and VB.Net

How to load a PDF document in C# and VB.Net

  1. Load from a file:
    
    DocumentCore dc = DocumentCore.Load(@"d:\Book.pdf");
    
    The dc object represents a document loaded into memory. The file format is detected automatically from the file extension: ".pdf".

    After loading you'll get the document presented as the Tree Of Objects, where the root node is DocumentCore class.

    To guarantee that a loadable content is really PDF and set some loading options, use PdfLoadOptions as 2nd parameter.

    
    DocumentCore dc = DocumentCore.Load(@"d:\Book.pdf", new PdfLoadOptions());
    
  2. Load from a Stream:
    
                // Assume that we already have a PDF document as bytes array.
                byte[] pdfBytes = null;
                // pdfBytes = ...
    
                DocumentCore dc = null;
                using (MemoryStream pdfStream = new MemoryStream(pdfBytes))
                {
                    dc = DocumentCore.Load(pdfStream, new PdfLoadOptions());
                }
                // Here we can do with our document 'dc' anything we need.
 

Complete code

using System;
using System.IO;
using SautinSoft.Document;

namespace Example
{
    class Program
    {
       
        static void Main(string[] args)
        {
            LoadPDFFromFile();
            //LoadPDFFromStream();
        }

        /// <summary>
        /// Loads a PDF document into DocumentCore (dc) from a file.
        /// </summary>
        /// <remarks>
        /// Details: https://www.sautinsoft.com/products/document/examples/load-pdf-document-net-csharp-vb.php
        /// </remarks>
        static void LoadPDFFromFile()
        {
            string filePath = @"..\..\example.pdf";

            // The file format is detected automatically from the file extension: ".pdf".
            // But as shown in the example below, we can specify PdfLoadOptions as 2nd parameter
            // to explicitly set that a loadable document has PDF format.
            DocumentCore dc = DocumentCore.Load(filePath);

            if (dc != null)
                Console.WriteLine("Loaded successfully!");
            Console.ReadKey();
        }

        /// <summary>
        /// Loads a PDF document into DocumentCore (dc) from a MemoryStream.
        /// </summary>
        /// <remarks>
        /// Details: https://www.sautinsoft.com/products/document/examples/load-pdf-document-net-csharp-vb.php
        /// </remarks>
        static void LoadPDFFromStream()
        {
            // Assume that we already have a PDF document as bytes array.
            byte[] fileBytes = File.ReadAllBytes(@"..\..\example.pdf");

            DocumentCore dc = null;

            // Create a MemoryStream
            using (MemoryStream ms = new MemoryStream(fileBytes))
            {
                // Specifying PdfLoadOptions we explicitly set that a loadable document is PDF.
                // Also we specified here to load only 1st page and
                // switched off the 'OptimizeImage' to not merge adjacent images into a one.
                PdfLoadOptions pdfLO = new PdfLoadOptions()
                {
                    PageCount = 1,
                    OptimizeImages = false
                };

                // Load a PDF document from the MemoryStream.
                dc = DocumentCore.Load(ms, new PdfLoadOptions());
            }
            if (dc != null)
                Console.WriteLine("Loaded successfully!");
            Console.ReadKey();
        }
    }
}

Download.

        
            Imports System
Imports System.IO
Imports SautinSoft.Document

Module Sample
    Sub Main()
        LoadPDFFromFile()
        'LoadPDFFromStream();
    End Sub

    ''' <summary>
    ''' Loads a PDF document into DocumentCore (dc) from a file.
    ''' </summary>
    ''' <remarks>
    ''' Details: https://www.sautinsoft.com/products/document/examples/load-pdf-document-net-csharp-vb.php
    ''' </remarks>
    Sub LoadPDFFromFile()
        Dim filePath As String = "..\example.pdf"

        ' The file format is detected automatically from the file extension: ".pdf".
        ' But as shown in the example below, we can specify PdfLoadOptions as 2nd parameter
        ' to explicitly set that a loadable document has PDF format.
        Dim dc As DocumentCore = DocumentCore.Load(filePath)

        If dc IsNot Nothing Then
            Console.WriteLine("Loaded successfully!")
            Console.ReadKey()
        End If
    End Sub

    ''' <summary>
    ''' Loads a PDF document into DocumentCore (dc) from a MemoryStream.
    ''' </summary>
    ''' <remarks>
    ''' Details: https://www.sautinsoft.com/products/document/examples/load-pdf-document-net-csharp-vb.php
    ''' </remarks>
    Sub LoadPDFFromStream()
        ' Assume that we already have a PDF document as bytes array.
        Dim fileBytes() As Byte = File.ReadAllBytes("..\example.pdf")

        Dim dc As DocumentCore = Nothing

        ' Create a MemoryStream
        Using ms As New MemoryStream(fileBytes)
            ' Specifying PdfLoadOptions we explicitly set that a loadable document is PDF.
            ' Also we specified here to load only 1st page and
            ' switched off the 'OptimizeImage' to not merge adjacent images into a one.
            Dim pdfLO As New PdfLoadOptions() With {
                .PageCount = 1,
                .OptimizeImages = False
            }

            ' Load a PDF document from the MemoryStream.
            dc = DocumentCore.Load(ms, New PdfLoadOptions())
        End Using
        If dc IsNot Nothing Then
            Console.WriteLine("Loaded successfully!")
            Console.ReadKey()
        End If
    End Sub
End Module

Download.

© SautinSoft 2002 - 2018