如何使用C#在ASP.NET中生成PDF

using IronPdf;

Imports IronPdf

// Instantiate the PDF renderer
var Renderer = new ChromePdfRenderer();

// Render HTML as PDF and save the result
Renderer.RenderHtmlAsPdf("<h1>This is the Tutorial for C# Generate PDF</h1>")
        .SaveAs("GeneratePDF.pdf");

' Instantiate the PDF renderer
Dim Renderer As New ChromePdfRenderer()

' Render HTML as PDF and save the result
Renderer.RenderHtmlAsPdf("<h1>This is the Tutorial for C# Generate PDF</h1>") _
        .SaveAs("GeneratePDF.pdf")

// Create a new PDF renderer
var pdf = new ChromePdfRenderer();

// Render HTML to PDF
PdfDocument doc = pdf.RenderHtmlAsPdf("<h1>This is a heading</h1>");

// Save the document
doc.SaveAs("FirstPDFDocument.pdf");

' Create a new PDF renderer
Dim pdf As New ChromePdfRenderer()

' Render HTML to PDF
Dim doc As PdfDocument = pdf.RenderHtmlAsPdf("<h1>This is a heading</h1>")

' Save the document
doc.SaveAs("FirstPDFDocument.pdf")

using IronPdf;

// Instantiate renderer
var Renderer = new ChromePdfRenderer();

// Render URL as PDF
var PDF = Renderer.RenderUrlAsPdf("https://www.wikipedia.org");

// Save to file
PDF.SaveAs("wikipedia.pdf");

Imports IronPdf

' Instantiate renderer
Dim Renderer As New ChromePdfRenderer()

' Render URL as PDF
Dim PDF = Renderer.RenderUrlAsPdf("https://www.wikipedia.org")

' Save to file
PDF.SaveAs("wikipedia.pdf")

using IronPdf;

// Instantiate renderer
var Renderer = new ChromePdfRenderer();

// Load and render HTML file
var PDF = Renderer.RenderHtmlFileAsPdf("HtmlPage.html");

// Save the PDF
PDF.SaveAs("FromHtmlFile.pdf");

Imports IronPdf

' Instantiate renderer
Dim Renderer As New ChromePdfRenderer()

' Load and render HTML file
Dim PDF = Renderer.RenderHtmlFileAsPdf("HtmlPage.html")

' Save the PDF
PDF.SaveAs("FromHtmlFile.pdf")

using IronPdf.AspNetCore;

// Render current page as PDF
var currentPagePdf = AspNetCore.RenderThisPageAsPdf();

// Render specific page as PDF
var specificPagePdf = AspNetCore.RenderPageAsPdf("/Page.aspx");

// Render page with parameters
var pageWithParamsPdf = AspNetCore.RenderPageAsPdf("/Page.aspx?id=100");

// Save the result
currentPagePdf.SaveAs("MyASPXPage.pdf");

Imports IronPdf.AspNetCore

' Render current page as PDF
Dim currentPagePdf = AspNetCore.RenderThisPageAsPdf()

' Render specific page as PDF
Dim specificPagePdf = AspNetCore.RenderPageAsPdf("/Page.aspx")

' Render page with parameters
Dim pageWithParamsPdf = AspNetCore.RenderPageAsPdf("/Page.aspx?id=100")

' Save the result
currentPagePdf.SaveAs("MyASPXPage.pdf")

using IronPdf.AspNetCore;

// Render MVC View as PDF
var viewPdf = AspNetCore.RenderViewAsPdf("/Home/Index");

// Render with model data
var modelData = new YourModelClass { Name = "John Doe", OrderId = 12345 };
var viewWithModelPdf = AspNetCore.RenderViewAsPdf("/Views/Invoice/Index", modelData);

// Save the PDF
viewPdf.SaveAs("MyMVCView.pdf");

Imports IronPdf.AspNetCore

' Render MVC View as PDF
Dim viewPdf = AspNetCore.RenderViewAsPdf("/Home/Index")

' Render with model data
Dim modelData = New YourModelClass With {.Name = "John Doe", .OrderId = 12345}
Dim viewWithModelPdf = AspNetCore.RenderViewAsPdf("/Views/Invoice/Index", modelData)

' Save the PDF
viewPdf.SaveAs("MyMVCView.pdf")

var ChromePdfRenderer = new ChromePdfRenderer();

// Generate PDF document
var pdfDocument = ChromePdfRenderer.RenderHtmlAsPdf("<h1>Hello world</h1>");

// Set password to encrypt the document
pdfDocument.Password = "Password@1234";

// Save the secured PDF
pdfDocument.SaveAs("secured.pdf");

Dim ChromePdfRenderer = New ChromePdfRenderer()

' Generate PDF document
Dim pdfDocument = ChromePdfRenderer.RenderHtmlAsPdf("<h1>Hello world</h1>")

' Set password to encrypt the document
pdfDocument.Password = "Password@1234"

' Save the secured PDF
pdfDocument.SaveAs("secured.pdf")

var ChromePdfRenderer = new ChromePdfRenderer();

// Load existing PDFs
var pdfDocuments = new List<PdfDocument>
{
    PdfDocument.FromFile("AccountPdf.pdf"),
    PdfDocument.FromFile("GeneratePDF.pdf"),
    PdfDocument.FromFile("wikipedia.pdf")
};

// Merge PDFs into a single document
var mergedPdfDocument = PdfDocument.Merge(pdfDocuments);
mergedPdfDocument.SaveAs("merged.pdf");

// Add a cover page
mergedPdfDocument.PrependPdf(ChromePdfRenderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"));

// Remove the last page
mergedPdfDocument.RemovePage(mergedPdfDocument.PageCount - 1);
mergedPdfDocument.SaveAs("merged.pdf");

// Extract specific pages
mergedPdfDocument.CopyPages(1, 2).SaveAs("excerpt.pdf");

Dim ChromePdfRenderer = New ChromePdfRenderer()

' Load existing PDFs
Dim pdfDocuments = New List(Of PdfDocument) From {
    PdfDocument.FromFile("AccountPdf.pdf"),
    PdfDocument.FromFile("GeneratePDF.pdf"),
    PdfDocument.FromFile("wikipedia.pdf")
}

' Merge PDFs into a single document
Dim mergedPdfDocument = PdfDocument.Merge(pdfDocuments)
mergedPdfDocument.SaveAs("merged.pdf")

' Add a cover page
mergedPdfDocument.PrependPdf(ChromePdfRenderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"))

' Remove the last page
mergedPdfDocument.RemovePage(mergedPdfDocument.PageCount - 1)
mergedPdfDocument.SaveAs("merged.pdf")

' Extract specific pages
mergedPdfDocument.CopyPages(1, 2).SaveAs("excerpt.pdf")

var ChromePdfRenderer = new ChromePdfRenderer();

// Load existing PDF
var pdfDocument = PdfDocument.FromFile("wikipedia.pdf");

// Get all text
var allText = pdfDocument.ExtractAllText();

// Get all Images
var allImages = pdfDocument.ExtractAllImages();

// Extract images and text by page
for (var index = 0; index < pdfDocument.PageCount; index++)
{
    var pageNumber = index + 1;
    var pageText = pdfDocument.ExtractTextFromPage(index);
    var pageImages = pdfDocument.ExtractImagesFromPage(index);
}

Dim ChromePdfRenderer = New ChromePdfRenderer()

' Load existing PDF
Dim pdfDocument = PdfDocument.FromFile("wikipedia.pdf")

' Get all text
Dim allText = pdfDocument.ExtractAllText()

' Get all Images
Dim allImages = pdfDocument.ExtractAllImages()

' Extract images and text by page
For index = 0 To pdfDocument.PageCount - 1
    Dim pageNumber = index + 1
    Dim pageText = pdfDocument.ExtractTextFromPage(index)
    Dim pageImages = pdfDocument.ExtractImagesFromPage(index)
Next

var ChromePdfRenderer = new ChromePdfRenderer();

// Enable JavaScript rendering
ChromePdfRenderer.RenderingOptions = new ChromePdfRenderOptions()
{
    EnableJavaScript = true,
    RenderDelay = 100  // Wait for JavaScript to execute
};

Dim ChromePdfRenderer = New ChromePdfRenderer()

' Enable JavaScript rendering
ChromePdfRenderer.RenderingOptions = New ChromePdfRenderOptions() With {
    .EnableJavaScript = True,
    .RenderDelay = 100 ' Wait for JavaScript to execute
}

// Load PDF
PdfDocument PDF = PdfDocument.FromFile("GeneratePDF.pdf");

// Extract all text 
string Text = PDF.ExtractAllText();

' Load PDF
Dim PDF As PdfDocument = PdfDocument.FromFile("GeneratePDF.pdf")

' Extract all text 
Dim Text As String = PDF.ExtractAllText()

using IronOcr;

var ocr = new IronTesseract();
var result = ocr.Read("scanned-document.pdf");
string recognizedText = result.Text;

Imports IronOcr

Dim ocr As New IronTesseract()
Dim result = ocr.Read("scanned-document.pdf")
Dim recognizedText As String = result.Text