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convert pdf to image c#

Antheresa Mae Tanjay answered on April 21, 2022 Popularity 9/10 Helpfulness 4/10

answer convert pdf to image c#

related convert pdf to image in c# mvc

convert pdf to image c#

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static void Main(string[] args)
        {
            PdfDocument doc = new PdfDocument();
            doc.LoadFromFile(@"D:\test.pdf");
            List<string> list = new List<string>();
            for (int i = 0; i < doc.Pages.Count; i++)
            {
                System.Drawing.Image bmp = doc.SaveAsImage(i);
                string fileName =string.Format("Page-{0}.png", i + 1);
                bmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);
                list.Add(fileName);
            }
            Bitmap b = CombineBitmap(list.ToArray());
            b.Save("D:\\total.png");
            foreach (var item in list)
            {
                File.Delete(item);
            }
        }
        public static System.Drawing.Bitmap CombineBitmap(string[] files)
        {
            //read all images into memory
            List<System.Drawing.Bitmap> images = new List<System.Drawing.Bitmap>();
            System.Drawing.Bitmap finalImage = null;

            try
            {
                int width = 0;
                int height = 0;

                foreach (string image in files)
                {
                    //create a Bitmap from the file and add it to the list
                    System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(image);

                    //update the size of the final bitmap
                    width += bitmap.Width;
                    height = bitmap.Height > height ? bitmap.Height : height;

                    images.Add(bitmap);
                }

                //create a bitmap to hold the combined image
                finalImage = new System.Drawing.Bitmap(width, height);

                //get a graphics object from the image so we can draw on it
                using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(finalImage))
                {
                    //set background color
                    g.Clear(System.Drawing.Color.Black);

                    //go through each image and draw it on the final image
                    int offset = 0;
                    foreach (System.Drawing.Bitmap image in images)
                    {
                        g.DrawImage(image,
                          new System.Drawing.Rectangle(offset, 0, image.Width, image.Height));
                        offset += image.Width;
                    }
                }

                return finalImage;
            }
            catch (Exception)
            {
                if (finalImage != null)
                    finalImage.Dispose();
                //throw ex;
                throw;
            }
            finally
            {
                //clean up memory
                foreach (System.Drawing.Bitmap image in images)
                {
                    image.Dispose();
                }
            }
        }

Popularity 9/10 Helpfulness 4/10 Language csharp

Source: social.msdn.microsoft.com

Tags: c# image pdf

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Contributed on Apr 21 2022

Antheresa Mae Tanjay

0 Answers Avg Quality 2/10

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convert pdf to image in c# mvc

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You can use the Ghostscript.NET library to convert PDF files to images in C# MVC.

using Ghostscript.NET.Rasterizer;

// Set the path to the PDF file
string pdfFilePath = "path/to/pdf/file.pdf";

// Set the path to the output directory
string outputDir = "path/to/output/dir";

// Create an instance of the GhostscriptRasterizer class
var rasterizer = new GhostscriptRasterizer();

// Set the resolution (in DPI) for the output image(s)
rasterizer.RenderingResolution = 300;

// Open the PDF file
rasterizer.Open(pdfFilePath);

// Loop through the pages in the PDF file and save each one as an image file
for (int pageNumber = 1; pageNumber <= rasterizer.PageCount; pageNumber++)
{
    // Set the output image file name
    string outputFileName = $"page{pageNumber}.png";

    // Set the output image file path
    string outputFilePath = Path.Combine(outputDir, outputFileName);

    // Render the page to a PNG image
    var image = rasterizer.GetPage(300, 300, pageNumber);

    // Save the image file
    image.Save(outputFilePath, System.Drawing.Imaging.ImageFormat.Png);
}

// Close the PDF file and dispose of the rasterizer object
rasterizer.Close();
rasterizer.Dispose();

This code snippet opens a PDF file, sets the output resolution to 300 DPI, and then loops through each page in the PDF file, rendering it to a PNG image and saving it to the specified output directory. You can modify the code to save the images in a different format (such as JPG or BMP) if needed.

Popularity 7/10 Helpfulness 7/10 Language csharp

Source: Grepper

Tags: c# image pdf

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Contributed on Mar 04 2023

SubZero

0 Answers Avg Quality 2/10

convert pdf to image c#

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