להמיר Excel לתמונה קטנה ב- C#

Install-Package Aspose.Cells

Workbook workbook = new Workbook("FinanceReport.xlsx");
Worksheet sheet = workbook.Worksheets[0];

ImageOrPrintOptions options = new ImageOrPrintOptions
{
    ImageType = ImageType.Png,
    HorizontalResolution = 96,
    VerticalResolution = 96,
    OnePagePerSheet = true
};

SheetRender renderer = new SheetRender(sheet, options);
renderer.ToImage(0, "preview_temp.png");

using System.Drawing;
Bitmap original = new Bitmap("preview_temp.png");
Bitmap thumbnail = new Bitmap(original, new Size(160, 120));
thumbnail.Save("thumbnail.png");

using System;
using System.Drawing;
using Aspose.Cells;
using Aspose.Cells.Rendering;
class Program
{
    static void Main()
    {
        // Load Excel file
        Workbook workbook = new Workbook("FinanceReport.xlsx");
        Worksheet sheet = workbook.Worksheets[0];

        // Configure low-resolution options
        ImageOrPrintOptions options = new ImageOrPrintOptions
        {
            ImageType = ImageType.Png,
            HorizontalResolution = 96,
            VerticalResolution = 96,
            OnePagePerSheet = true
        };

        // Render full sheet as a temporary image
        SheetRender renderer = new SheetRender(sheet, options);
        renderer.ToImage(0, "preview_temp.png");

        // Resize to thumbnail
        using (Bitmap original = new Bitmap("preview_temp.png"))
        {
            Bitmap thumbnail = new Bitmap(original, new Size(160, 120));
            thumbnail.Save("thumbnail.png");
        }

        Console.WriteLine("Thumbnail image created from Excel worksheet.");
    }
}