How to save a document in Image format using C# and .NET



Let's save each page of the document into image format, like a shown on the picture:

Save as Image

Code explanations

Here we create DocumentPaginator:

 DocumentPaginator dp =  dc.GetPaginator();
Pagination is the process of dividing a document into discrete pages.

Complete code

using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using SautinSoft.Document;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            SaveToImage();
        }
        /// <summary>
        /// Loads a document and saves all pages as images.
        /// </summary>
        /// <remarks>
        /// Details: https://sautinsoft.com/products/document/help/net/developer-guide/save-document-as-image-net-csharp-vb.php
        /// </remarks>
        static void SaveToImage()
        {
            string filePath = @"..\..\..\example.docx";
            DocumentCore dc = DocumentCore.Load(filePath);
            string folderPath = Path.GetFullPath(@"Result-files");

            DocumentPaginator dp =  dc.GetPaginator();

            for (int i = 0; i < dp.Pages.Count; i++)
            {
                DocumentPage page = dp.Pages[i];
                // For example, set DPI: 72, Background: White.
                Bitmap image = page.Rasterize(72, SautinSoft.Document.Color.White);
                Directory.CreateDirectory(folderPath);
                image.Save(folderPath+@"\Page - "+i.ToString()+".png", ImageFormat.Png);
            }
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(folderPath) { UseShellExecute = true });
        }
    }
}

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Imports System
Imports System.IO
Imports SautinSoft.Document
Imports System.Drawing
Imports System.Drawing.Imaging

Module Sample
    Sub Main()
        SaveToImage()
    End Sub

    ''' <summary>
    ''' Loads a document and saves all pages as images.
    ''' </summary>
    ''' <remarks>
    ''' Details: https://sautinsoft.com/products/document/help/net/developer-guide/save-document-as-image-net-csharp-vb.php
    ''' </remarks>
    Sub SaveToImage()
        Dim filePath As String = "..\..\..\example.docx"
        Dim dc As DocumentCore = DocumentCore.Load(filePath)
        Dim folderPath As String = Path.GetFullPath("Result-files")

        Dim dp As DocumentPaginator = dc.GetPaginator()

        For i As Integer = 0 To dp.Pages.Count - 1
            Dim page As DocumentPage = dp.Pages(i)
            ' For example, set DPI: 72, Background: White.
            Dim image As Bitmap = page.Rasterize(72, SautinSoft.Document.Color.White)
            Directory.CreateDirectory(folderPath)
            image.Save(folderPath & "\Page - " & i.ToString() & ".png", ImageFormat.Png)
        Next i
        System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(folderPath) With {.UseShellExecute = True})
    End Sub
End Module

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