วิธีแปลง Excel เป็นภาพพร้อมพื้นหลังโปร่งใสใน C#

using System;
using Aspose.Cells;

class Program
{
    static void Main()
    {
        // Load the Excel file
        Workbook workbook = new Workbook("DataGrid.xlsx");
        Worksheet sheet = workbook.Worksheets[0];

        // Hide gridlines and headings
        sheet.PageSetup.PrintGridlines = false;
        sheet.PageSetup.PrintHeadings = false;
        sheet.DisplayGridlines = false;

        // Set image rendering options with transparency
        ImageOrPrintOptions options = new ImageOrPrintOptions
        {
            ImageType = ImageType.Png,
            Transparent = true,
            OnePagePerSheet = true
        };

        // Render the sheet as an image
        SheetRender renderer = new SheetRender(sheet, options);
        renderer.ToImage(0, "transparent_output.png");

        Console.WriteLine("Worksheet rendered with transparent background.");
    }
}