Microsoft.Extensions .DependencyInjection .NET 9（PDF使用說明）

public interface IPdfService
{
    void GeneratePdf(string baseUrl, string query, string filePath);
}

Public Interface IPdfService
    Sub GeneratePdf(baseUrl As String, query As String, filePath As String)
End Interface

using IronPdf;
using System;
using System.Web;

// Implement the PDF generation interface
public class IronPdfService : IPdfService
{
    public void GeneratePdf(string baseUrl, string query, string filePath)
    {
        License.LicenseKey = "Your-License-Key"; // Set the IronPDF license key
        string encodedQuery = HttpUtility.UrlEncode(query); // Encode the query string
        string fullUrl = $"{baseUrl}?query={encodedQuery}"; // Construct the full URL
        var renderer = new ChromePdfRenderer(); // Create a PDF renderer
        var pdf = renderer.RenderUrlAsPdf(fullUrl); // Render the PDF from the URL
        pdf.SaveAs(filePath); // Save the PDF to the specified file path
        Console.WriteLine($"PDF successfully created from: {fullUrl}");
        Console.WriteLine($"Saved to: {filePath}");
    }
}

Imports IronPdf
Imports System
Imports System.Web

' Implement the PDF generation interface
Public Class IronPdfService
	Implements IPdfService

	Public Sub GeneratePdf(ByVal baseUrl As String, ByVal query As String, ByVal filePath As String)
		License.LicenseKey = "Your-License-Key" ' Set the IronPDF license key
		Dim encodedQuery As String = HttpUtility.UrlEncode(query) ' Encode the query string
		Dim fullUrl As String = $"{baseUrl}?query={encodedQuery}" ' Construct the full URL
		Dim renderer = New ChromePdfRenderer() ' Create a PDF renderer
		Dim pdf = renderer.RenderUrlAsPdf(fullUrl) ' Render the PDF from the URL
		pdf.SaveAs(filePath) ' Save the PDF to the specified file path
		Console.WriteLine($"PDF successfully created from: {fullUrl}")
		Console.WriteLine($"Saved to: {filePath}")
	End Sub
End Class

builder.Services.AddSingleton<IPdfService, IronPdfService>();

public class MyController : Controller
{
    private readonly IPdfService _pdfService;

    public MyController(IPdfService pdfService)
    {
        _pdfService = pdfService;
    }

    public IActionResult GeneratePdf()
    {
        string baseUrl = "https://ironpdf.com/";
        string query = "Hello World from IronPDF !";
        string filePath = "Demo.pdf";

        // Use the injected PDF service to generate a PDF
        _pdfService.GeneratePdf(baseUrl, query, filePath);

        return View();
    }
}

Public Class MyController
	Inherits Controller

	Private ReadOnly _pdfService As IPdfService

	Public Sub New(ByVal pdfService As IPdfService)
		_pdfService = pdfService
	End Sub

	Public Function GeneratePdf() As IActionResult
		Dim baseUrl As String = "https://ironpdf.com/"
		Dim query As String = "Hello World from IronPDF !"
		Dim filePath As String = "Demo.pdf"

		' Use the injected PDF service to generate a PDF
		_pdfService.GeneratePdf(baseUrl, query, filePath)

		Return View()
	End Function
End Class