C# Konvertieren Sie Excel in Bilder (JPG, PNG, BMP, EMF, SVG) ohne MS Office

Install-Package Spire.XLS

using Spire.Xls;
    using System.Drawing.Imaging;
    
    namespace ConvertExcelToImage
    {
        internal class Program
        {
            static void Main(string[] args)
            {
                //Create a Workbook object
                Workbook workbook = new Workbook();
                //Open an Excel file
                workbook.LoadFromFile("Sample.xlsx");
    
                //Get the first worksheet
                Worksheet worksheet = workbook.Worksheets[0];
    
                //Save the worksheet to JPEG, PNG, and BMP images
                worksheet.SaveToImage("Output//SheetToJPEG.jpeg", ImageFormat.Jpeg);
                worksheet.SaveToImage("Output//SheetToPNG.png", ImageFormat.Png);
                worksheet.SaveToImage("Output//SheetToBMP.bmp", ImageFormat.Bmp);
    
                workbook.Dispose();
            }
        }
    }

using Spire.Xls;
    using System.Drawing;
    using System.Drawing.Imaging;
    using System.IO;
    
    namespace ConvertExcelToEMF
    {
        internal class Program
        {
            static void Main(string[] args)
            {
                //Create a Workbook object and load the Excel file
                Workbook workbook = new Workbook();
                workbook.LoadFromFile("Sample.xlsx");
    
                //Get the first worksheet
                Worksheet worksheet = workbook.Worksheets[0];
    
                //Create a memory stream
                using (MemoryStream stream = new MemoryStream())
                {
                    //Save the worksheet to the memory stream as EMF
                    worksheet.ToEMFStream(stream, worksheet.FirstRow, worksheet.FirstColumn, worksheet.LastRow, worksheet.LastColumn, EmfType.EmfPlusDual);
    
                    //Create an Image object from the memory stream
                    using (Image img = Image.FromStream(stream))
                    {
                        //Save the image as an EMF file
                        img.Save("Output//SheetToEMF.emf", ImageFormat.Emf);
                    }
                }
    
                workbook.Dispose();
            }
        }
    }

using Spire.Xls;
    using System.IO;
    
    namespace ConvertExcelToSVG
    {
        internal class Program
        {
            static void Main(string[] args)
            {
                //Create a Workbook object
                Workbook workbook = new Workbook();
                //Open an Excel file
                workbook.LoadFromFile("Sample.xlsx");
    
                //Get the first worksheet
                Worksheet worksheet = workbook.Worksheets[0];
    
                //Save the worksheet to SVG
                using (FileStream fs = new FileStream("Output//SheetToSVG.svg", FileMode.Create))
                {
                    
                    worksheet.ToSVGStream(fs, worksheet.FirstRow, worksheet.FirstColumn, worksheet.LastRow, worksheet.LastColumn);
                }
    
                workbook.Dispose();
            }
        }
    }

using Spire.Xls;
    using System.Drawing;
    using System.Drawing.Imaging;
    using System.IO;
    
    namespace ConvertExcelToImageWithCustomResolution
    {
        internal class Program
        {
            static void Main(string[] args)
            {
                //Create a Workbook object
                Workbook workbook = new Workbook();
                //Open an Excel file
                workbook.LoadFromFile("Sample.xlsx");
    
                //Get the first worksheet
                Worksheet worksheet = workbook.Worksheets[0];
    
                //Convert the worksheet to EMF stream
                using (MemoryStream ms = new MemoryStream())
                {
                    worksheet.ToEMFStream(ms, 1, 1, worksheet.LastRow, worksheet.LastColumn);
    
                    //Create an image from the EMF stream
                    Image image = Image.FromStream(ms);
                    //Call the ResetResolution() method to change the resolution of the image
                    Bitmap images = ResetResolution(image as Metafile, 300);
    
                    //Save the image in JPG file format
                    images.Save("Output//SheetToImageWithCustomResolution.jpg", ImageFormat.Jpeg);
                }
    
                workbook.Dispose();
            }
    
            //Create a custom method to change image resolution
            private static Bitmap ResetResolution(Metafile mf, float resolution)
            {
                int width = (int)(mf.Width * resolution / mf.HorizontalResolution);
                int height = (int)(mf.Height * resolution / mf.VerticalResolution);
                Bitmap bmp = new Bitmap(width, height);
                bmp.SetResolution(resolution, resolution);
                Graphics g = Graphics.FromImage(bmp);
                g.DrawImage(mf, 0, 0);
                g.Dispose();
                return bmp;
            }
        }
    }

using Spire.Xls;
    using System.Drawing.Imaging;
    
    namespace ConvertExcelToImage
    {
        internal class Program
        {
            static void Main(string[] args)
            {
                //Create a Workbook object
                Workbook workbook = new Workbook();
                //Open an Excel file
                workbook.LoadFromFile("Sample.xlsx");
    
                //Get the first worksheet
                Worksheet worksheet = workbook.Worksheets[0];
    
                //Set the margin of the worksheet to 0
                worksheet.PageSetup.LeftMargin = 0;
                worksheet.PageSetup.BottomMargin = 0;
                worksheet.PageSetup.TopMargin = 0;
                worksheet.PageSetup.RightMargin = 0;
    
                //Save the worksheet to an image
                worksheet.SaveToImage("Output//SheetToImageWithoutMargins.png", ImageFormat.Png);
    
                workbook.Dispose();
            }
        }
    }

using Spire.Xls;
    using System.IO;
    
    namespace ConvertCellRangeToImage
    {
        internal class Program
        {
            static void Main(string[] args)
            {
                //Create a Workbook object
                Workbook workbook = new Workbook();
                //Open an Excel file
                workbook.LoadFromFile("Sample.xlsx");
    
                //Get the first worksheet
                Worksheet worksheet = workbook.Worksheets[0];
                
                //Save a specific range of cells within the worksheet to an image
                worksheet.ToImage(5, 1, 16, 5).Save("Output//CellRangeToImage.png");
    
                workbook.Dispose();
            }
        }
    }