Notes

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using PdfSharpCore;
using VetCV.HtmlRendererCore.PdfSharpCore;
using System;
using System.Drawing;
using System.IO;

public class HomeController : Controller
{
private readonly IWebHostEnvironment _environment;

public HomeController(IWebHostEnvironment environment)
{
_environment = environment;
}

[HttpPost]
[Route("Home/GeneratePdf")]
public IActionResult GeneratePdf()
{
try
{
// Path to the HTML file in wwwroot directory
var htmlFilePath = Path.Combine(_environment.WebRootPath, "pdf_template.html");
string htmlContent;

// Read the HTML file content
using (var reader = new StreamReader(htmlFilePath))
{
htmlContent = reader.ReadToEnd();
}

// Ensure all images are referenced correctly in HTML
htmlContent = ReplaceImagePathsWithBase64(htmlContent);

using (var memoryStream = new MemoryStream())
{
// Generate PDF from HTML
var pdf = PdfGenerator.GeneratePdf(htmlContent, PdfSharpCore.PageSize.A4);
pdf.Save(memoryStream, false);
memoryStream.Position = 0;
return File(memoryStream.ToArray(), "application/pdf", "Test.pdf");
}
}
catch (Exception ex)
{
return BadRequest("Error generating PDF: " + ex.Message);
}
}

private string ReplaceImagePathsWithBase64(string htmlContent)
{
// Replace image src with base64 encoded image
var imagePath = Path.Combine(_environment.WebRootPath, "images/logo.png");
if (System.IO.File.Exists(imagePath))
{
var base64Image = Convert.ToBase64String(System.IO.File.ReadAllBytes(imagePath));
var imageSrc = $"data:image/png;base64,{base64Image}";
htmlContent = htmlContent.Replace("/images/logo.png", imageSrc);
}

return htmlContent;
}
}