Wie man ein PDF in C# bearbeitet;

var pdf = new PdfDocument("report.pdf"); var renderer = new ChromePdfRenderer(); var coverPagePdf = renderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"); pdf.PrependPdf(coverPagePdf); pdf.SaveAs("report_with_cover.pdf");

Dim pdf = New PdfDocument("report.pdf") Dim renderer = New ChromePdfRenderer() Dim coverPagePdf = renderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>") pdf.PrependPdf(coverPagePdf) pdf.SaveAs("report_with_cover.pdf")

var pdf = new PdfDocument("report.pdf"); // Copy pages 5 to 7 and save them as a new document. pdf.CopyPages(4, 6).SaveAs("report_highlight.pdf");

Dim pdf = New PdfDocument("report.pdf") ' Copy pages 5 to 7 and save them as a new document. pdf.CopyPages(4, 6).SaveAs("report_highlight.pdf")

var pdf = new PdfDocument("report.pdf"); // Remove the last page from the PDF and save again pdf.RemovePage(pdf.PageCount - 1); pdf.SaveAs("report_minus_one_page.pdf");

Dim pdf = New PdfDocument("report.pdf") ' Remove the last page from the PDF and save again pdf.RemovePage(pdf.PageCount - 1) pdf.SaveAs("report_minus_one_page.pdf")

var pdfs = new List<PdfDocument> { PdfDocument.FromFile("A.pdf"), PdfDocument.FromFile("B.pdf"), PdfDocument.FromFile("C.pdf") }; PdfDocument mergedPdf = PdfDocument.Merge(pdfs); mergedPdf.SaveAs("merged.pdf"); foreach (var pdf in pdfs) { pdf.Dispose(); }

Dim pdfs = New List(Of PdfDocument) From {PdfDocument.FromFile("A.pdf"), PdfDocument.FromFile("B.pdf"), PdfDocument.FromFile("C.pdf")} Dim mergedPdf As PdfDocument = PdfDocument.Merge(pdfs) mergedPdf.SaveAs("merged.pdf") For Each pdf In pdfs	pdf.Dispose() Next pdf

var pdf = new PdfDocument("sample.pdf"); // Take the first page var pdf_page1 = pdf.CopyPage(0); pdf_page1.SaveAs("Split1.pdf"); // Take the pages 2 & 3 var pdf_page2_3 = pdf.CopyPages(1, 2); pdf_page2_3.SaveAs("Spli2t.pdf");

Dim pdf = New PdfDocument("sample.pdf") ' Take the first page Dim pdf_page1 = pdf.CopyPage(0) pdf_page1.SaveAs("Split1.pdf") ' Take the pages 2 & 3 Dim pdf_page2_3 = pdf.CopyPages(1, 2) pdf_page2_3.SaveAs("Spli2t.pdf")

// Open an Encrypted File, alternatively create a new PDF from Html var pdf = PdfDocument.FromFile("encrypted.pdf", "password"); // Edit file metadata pdf.MetaData.Author = "Satoshi Nakamoto"; pdf.MetaData.Keywords = "SEO, Friendly"; pdf.MetaData.ModifiedDate = System.DateTime.Now; // Edit file security settings // The following code makes a PDF read only and will disallow copy & paste and printing pdf.SecuritySettings.RemovePasswordsAndEncryption(); pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key"); pdf.SecuritySettings.AllowUserAnnotations = false; pdf.SecuritySettings.AllowUserCopyPasteContent = false; pdf.SecuritySettings.AllowUserFormData = false; pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights; // Change or set the document encryption password pdf.SecuritySettings.OwnerPassword = "top-secret"; // password to edit the pdf pdf.SecuritySettings.UserPassword = "shareable"; // password to open the pdf pdf.SaveAs("secured.pdf");

Imports System ' Open an Encrypted File, alternatively create a new PDF from Html Dim pdf = PdfDocument.FromFile("encrypted.pdf", "password") ' Edit file metadata pdf.MetaData.Author = "Satoshi Nakamoto" pdf.MetaData.Keywords = "SEO, Friendly" pdf.MetaData.ModifiedDate = DateTime.Now ' Edit file security settings ' The following code makes a PDF read only and will disallow copy & paste and printing pdf.SecuritySettings.RemovePasswordsAndEncryption() pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key") pdf.SecuritySettings.AllowUserAnnotations = False pdf.SecuritySettings.AllowUserCopyPasteContent = False pdf.SecuritySettings.AllowUserFormData = False pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights ' Change or set the document encryption password pdf.SecuritySettings.OwnerPassword = "top-secret" ' password to edit the pdf pdf.SecuritySettings.UserPassword = "shareable" ' password to open the pdf pdf.SaveAs("secured.pdf")

using IronPdf; using IronPdf.Signing; new IronPdf.Signing.PdfSignature("Iron.p12", "123456").SignPdfFile("any.pdf");

Imports IronPdf Imports IronPdf.Signing Call (New IronPdf.Signing.PdfSignature("Iron.p12", "123456")).SignPdfFile("any.pdf")

using IronPdf; // Step 1. Create a PDF var renderer = new ChromePdfRenderer(); var doc = renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>"); // Step 2. Create a Signature. // You may create a .pfx or .p12 PDF signing certificate using Adobe Acrobat Reader. // Read: https://helpx.adobe.com/acrobat/using/digital-ids.html var signature = new IronPdf.Signing.PdfSignature("Iron.pfx", "123456") { // Step 3. Optional signing options and a handwritten signature graphic SigningContact = "support@ironsoftware.com", SigningLocation = "Chicago, USA", SigningReason = "To show how to sign a PDF" }; //Step 4. Sign the PDF with the PdfSignature. Multiple signing certificates may be used doc.Sign(signature); //Step 5. The PDF is not signed until saved to file, steam or byte array. doc.SaveAs("signed.pdf");

Imports IronPdf ' Step 1. Create a PDF Private renderer = New ChromePdfRenderer() Private doc = renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>") ' Step 2. Create a Signature. ' You may create a .pfx or .p12 PDF signing certificate using Adobe Acrobat Reader. ' Read: https://helpx.adobe.com/acrobat/using/digital-ids.html Private signature = New IronPdf.Signing.PdfSignature("Iron.pfx", "123456") With {	.SigningContact = "support@ironsoftware.com",	.SigningLocation = "Chicago, USA",	.SigningReason = "To show how to sign a PDF" } 'Step 4. Sign the PDF with the PdfSignature. Multiple signing certificates may be used doc.Sign(signature) 'Step 5. The PDF is not signed until saved to file, steam or byte array. doc.SaveAs("signed.pdf")

var Renderer = new ChromePdfRenderer(); var myPdf = Renderer.RenderHtmlFileAsPdf("my-content.html"); // Here we can add an attachment with a name and byte[] var attachment1 = myPdf.Attachments.AddAttachment("attachment_1", example_attachment); // And here is an example of removing an attachment myPdf.Attachments.RemoveAttachment(attachment1); myPdf.SaveAs("my-content.pdf");

Dim Renderer = New ChromePdfRenderer() Dim myPdf = Renderer.RenderHtmlFileAsPdf("my-content.html") ' Here we can add an attachment with a name and byte[] Dim attachment1 = myPdf.Attachments.AddAttachment("attachment_1", example_attachment) ' And here is an example of removing an attachment myPdf.Attachments.RemoveAttachment(attachment1) myPdf.SaveAs("my-content.pdf")

var pdf = new PdfDocument("document.pdf"); // Quality parameter can be 1-100, where 100 is 100% of original quality pdf.CompressImages(60); pdf.SaveAs("document_compressed.pdf");

Dim pdf = New PdfDocument("document.pdf") ' Quality parameter can be 1-100, where 100 is 100% of original quality pdf.CompressImages(60) pdf.SaveAs("document_compressed.pdf")

var pdf = new PdfDocument("document.pdf"); pdf.CompressImages(90, true); pdf.SaveAs("document_scaled_compressed.pdf");

Dim pdf = New PdfDocument("document.pdf") pdf.CompressImages(90, True) pdf.SaveAs("document_scaled_compressed.pdf")

var renderer = new ChromePdfRenderer(); // Build a footer using html to style the text // mergeable fields are: // {page} {total-pages} {url} {date} {time} {html-title} & {pdf-title} renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter() { MaxHeight = 15, //millimeters HtmlFragment = "<center><i>{page} of {total-pages}<i></center>", DrawDividerLine = true }; // Build a header using an image asset // Note the use of BaseUrl to set a relative path to the assets renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter() { MaxHeight = 20, //millimeters HtmlFragment = "<img src='logo.png'>", BaseUrl = new System.Uri(@"C:\assets\images").AbsoluteUri };

Dim renderer = New ChromePdfRenderer() ' Build a footer using html to style the text ' mergeable fields are: ' {page} {total-pages} {url} {date} {time} {html-title} & {pdf-title} renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {	.MaxHeight = 15,	.HtmlFragment = "<center><i>{page} of {total-pages}<i></center>",	.DrawDividerLine = True } ' Build a header using an image asset ' Note the use of BaseUrl to set a relative path to the assets renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter() With {	.MaxHeight = 20,	.HtmlFragment = "<img src='logo.png'>",	.BaseUrl = (New System.Uri("C:\assets\images")).AbsoluteUri }

var renderer = new ChromePdfRenderer { RenderingOptions = { FirstPageNumber = 1, // use 2 if a cover-page will be appended // Add a header to every page easily: TextHeader = { DrawDividerLine = true, CenterText = "{url}", Font = IronSoftware.Drawing.FontTypes.Helvetica, FontSize = 12 }, // Add a footer too: TextFooter = { DrawDividerLine = true, Font = IronSoftware.Drawing.FontTypes.Arial, FontSize = 10, LeftText = "{date} {time}", RightText = "{page} of {total-pages}" } } };

Dim renderer = New ChromePdfRenderer With {	.RenderingOptions = {	FirstPageNumber = 1, TextHeader = {	DrawDividerLine = True,	CenterText = "{url}",	Font = IronSoftware.Drawing.FontTypes.Helvetica,	FontSize = 12	},	TextFooter = {	DrawDividerLine = True,	Font = IronSoftware.Drawing.FontTypes.Arial,	FontSize = 10,	LeftText = "{date} {time}",	RightText = "{page} of {total-pages}"	}	} }

// Using an existing PDF var pdf = PdfDocument.FromFile("sample.pdf"); // Parameters int pageIndex = 1; string oldText = ".NET 6"; // Old text to remove string newText = ".NET 7"; // New text to add // Replace Text on Page pdf.ReplaceTextOnPage(pageIndex, oldText, newText); // Placeholder Template Example pdf.ReplaceTextOnPage(pageIndex, "[DATE]", "01/01/2000"); // Save your new PDF pdf.SaveAs("new_sample.pdf");

' Using an existing PDF Dim pdf = PdfDocument.FromFile("sample.pdf") ' Parameters Dim pageIndex As Integer = 1 Dim oldText As String = ".NET 6" ' Old text to remove Dim newText As String = ".NET 7" ' New text to add ' Replace Text on Page pdf.ReplaceTextOnPage(pageIndex, oldText, newText) ' Placeholder Template Example pdf.ReplaceTextOnPage(pageIndex, "[DATE]", "01/01/2000") ' Save your new PDF pdf.SaveAs("new_sample.pdf")

// Create a new PDF or edit an existing document. PdfDocument pdf = PdfDocument.FromFile("existing.pdf"); // Add bookmark pdf.Bookmarks.AddBookMarkAtEnd("Author's Note", 2); pdf.Bookmarks.AddBookMarkAtEnd("Table of Contents", 3); // Store new bookmark in a variable to add nested bookmarks to var summaryBookmark = pdf.Bookmarks.AddBookMarkAtEnd("Summary", 17); // Add a sub-bookmark within the summary var conclusionBookmark = summaryBookmark.Children.AddBookMarkAtStart("Conclusion", 18); // Add another bookmark to end of highest-level bookmark list pdf.Bookmarks.AddBookMarkAtEnd("References", 20); pdf.SaveAs("existing.pdf");

' Create a new PDF or edit an existing document. Dim pdf As PdfDocument = PdfDocument.FromFile("existing.pdf") ' Add bookmark pdf.Bookmarks.AddBookMarkAtEnd("Author's Note", 2) pdf.Bookmarks.AddBookMarkAtEnd("Table of Contents", 3) ' Store new bookmark in a variable to add nested bookmarks to Dim summaryBookmark = pdf.Bookmarks.AddBookMarkAtEnd("Summary", 17) ' Add a sub-bookmark within the summary Dim conclusionBookmark = summaryBookmark.Children.AddBookMarkAtStart("Conclusion", 18) ' Add another bookmark to end of highest-level bookmark list pdf.Bookmarks.AddBookMarkAtEnd("References", 20) pdf.SaveAs("existing.pdf")

// create a new PDF or load and edit an existing document. var pdf = PdfDocument.FromFile("existing.pdf"); // Create a PDF annotation object var textAnnotation = new IronPdf.Annotations.TextAnnotation(PageIndex: 0) { Title = "This is the major title", Contents = "This is the long 'sticky note' comment content...", Subject = "This is a subtitle", Opacity = 0.9, Printable = false, Hidden = false, OpenByDefault = true, ReadOnly = false, Rotatable = true, }; // Add the annotation "sticky note" to a specific page and location within any new or existing PDF. pdf.Annotations.Add(textAnnotation); pdf.SaveAs("existing.pdf");

' create a new PDF or load and edit an existing document. Dim pdf = PdfDocument.FromFile("existing.pdf") ' Create a PDF annotation object Dim textAnnotation = New IronPdf.Annotations.TextAnnotation(PageIndex:= 0) With {	.Title = "This is the major title",	.Contents = "This is the long 'sticky note' comment content...",	.Subject = "This is a subtitle",	.Opacity = 0.9,	.Printable = False,	.Hidden = False,	.OpenByDefault = True,	.ReadOnly = False,	.Rotatable = True } ' Add the annotation "sticky note" to a specific page and location within any new or existing PDF. pdf.Annotations.Add(textAnnotation) pdf.SaveAs("existing.pdf")

var renderer = new ChromePdfRenderer(); var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf"); pdf.AddBackgroundPdf(@"MyBackground.pdf"); pdf.AddForegroundOverlayPdfToPage(0, @"MyForeground.pdf", 0); pdf.SaveAs(@"C:\Path\To\Complete.pdf");

Dim renderer = New ChromePdfRenderer() Dim pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf") pdf.AddBackgroundPdf("MyBackground.pdf") pdf.AddForegroundOverlayPdfToPage(0, "MyForeground.pdf", 0) pdf.SaveAs("C:\Path\To\Complete.pdf")

var renderer = new ChromePdfRenderer(); var pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>"); TextStamper stamper1 = new TextStamper { Text = "Hello World! Stamp One Here!", FontFamily = "Bungee Spice", UseGoogleFont = true, FontSize = 100, IsBold = true, IsItalic = true, VerticalAlignment = VerticalAlignment.Top }; TextStamper stamper2 = new TextStamper() { Text = "Hello World! Stamp Two Here!", FontFamily = "Bungee Spice", UseGoogleFont = true, FontSize = 30, VerticalAlignment = VerticalAlignment.Bottom }; Stamper[] stampersToApply = { stamper1, stamper2 }; pdf.ApplyMultipleStamps(stampersToApply); pdf.ApplyStamp(stamper2);

Dim renderer = New ChromePdfRenderer() Dim pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>") Dim stamper1 As New TextStamper With {	.Text = "Hello World! Stamp One Here!",	.FontFamily = "Bungee Spice",	.UseGoogleFont = True,	.FontSize = 100,	.IsBold = True,	.IsItalic = True,	.VerticalAlignment = VerticalAlignment.Top } Dim stamper2 As New TextStamper() With {	.Text = "Hello World! Stamp Two Here!",	.FontFamily = "Bungee Spice",	.UseGoogleFont = True,	.FontSize = 30,	.VerticalAlignment = VerticalAlignment.Bottom } Dim stampersToApply() As Stamper = { stamper1, stamper2 } pdf.ApplyMultipleStamps(stampersToApply) pdf.ApplyStamp(stamper2)

var pdf = new PdfDocument("/attachments/2022_Q1_sales.pdf"); ImageStamper logoImageStamper = new ImageStamper("/assets/logo.png"); // Apply to every page, one page, or some pages pdf.ApplyStamp(logoImageStamper); pdf.ApplyStamp(logoImageStamper, 0); pdf.ApplyStamp(logoImageStamper, new[] { 0, 3, 11 });

Dim pdf = New PdfDocument("/attachments/2022_Q1_sales.pdf") Dim logoImageStamper As New ImageStamper("/assets/logo.png") ' Apply to every page, one page, or some pages pdf.ApplyStamp(logoImageStamper) pdf.ApplyStamp(logoImageStamper, 0) pdf.ApplyStamp(logoImageStamper, { 0, 3, 11 })

var renderer = new ChromePdfRenderer(); var pdf = renderer.RenderHtmlAsPdf("<p>Hello World, example HTML body.</p>"); HtmlStamper stamper = new HtmlStamper($"<p>Example HTML Stamped</p><div style='width:250pt;height:250pt;background-color:red;'></div>") { HorizontalOffset = new Length(-3, MeasurementUnit.Inch), VerticalAlignment = VerticalAlignment.Bottom }; pdf.ApplyStamp(stamper);

Dim renderer = New ChromePdfRenderer() Dim pdf = renderer.RenderHtmlAsPdf("<p>Hello World, example HTML body.</p>") Dim stamper As New HtmlStamper($"<p>Example HTML Stamped</p><div style='width:250pt;height:250pt;background-color:red;'></div>") If True Then 'INSTANT VB WARNING: An assignment within expression was extracted from the following statement: 'ORIGINAL LINE: HorizontalOffset = new Length(-3, MeasurementUnit.Inch), VerticalAlignment = VerticalAlignment.Bottom	New Length(-3, MeasurementUnit.Inch), VerticalAlignment = VerticalAlignment.Bottom	HorizontalOffset = New Length(-3, MeasurementUnit.Inch), VerticalAlignment End If pdf.ApplyStamp(stamper)

BarcodeStamper bcStamp = new BarcodeStamper("IronPDF", BarcodeEncoding.Code39); bcStamp.HorizontalAlignment = HorizontalAlignment.Left; bcStamp.VerticalAlignment = VerticalAlignment.Bottom; var pdf = new PdfDocument("example.pdf"); pdf.ApplyStamp(bcStamp);

Dim bcStamp As New BarcodeStamper("IronPDF", BarcodeEncoding.Code39) bcStamp.HorizontalAlignment = HorizontalAlignment.Left bcStamp.VerticalAlignment = VerticalAlignment.Bottom Dim pdf = New PdfDocument("example.pdf") pdf.ApplyStamp(bcStamp)

BarcodeStamper qrStamp = new BarcodeStamper("IronPDF", BarcodeEncoding.QRCode); qrStamp.Height = 50; // pixels qrStamp.Width = 50; // pixels qrStamp.HorizontalAlignment = HorizontalAlignment.Left; qrStamp.VerticalAlignment = VerticalAlignment.Bottom; var pdf = new PdfDocument("example.pdf"); pdf.ApplyStamp(qrStamp);

Dim qrStamp As New BarcodeStamper("IronPDF", BarcodeEncoding.QRCode) qrStamp.Height = 50 ' pixels qrStamp.Width = 50 ' pixels qrStamp.HorizontalAlignment = HorizontalAlignment.Left qrStamp.VerticalAlignment = VerticalAlignment.Bottom Dim pdf = New PdfDocument("example.pdf") pdf.ApplyStamp(qrStamp)

var pdf = new PdfDocument("/attachments/design.pdf"); string html = "<h1> Example Title <h1/>"; int rotation = 0; int watermarkOpacity = 30; pdf.ApplyWatermark(html, rotation, watermarkOpacity);

Dim pdf = New PdfDocument("/attachments/design.pdf") Dim html As String = "<h1> Example Title <h1/>" Dim rotation As Integer = 0 Dim watermarkOpacity As Integer = 30 pdf.ApplyWatermark(html, rotation, watermarkOpacity)

var pdf = new PdfDocument("/assets/example.pdf"); // Apply one stamp to all pages pdf.ApplyStamp(myStamper); // Apply one stamp to a specific page pdf.ApplyStamp(myStamper, 0); // Apply one stamp to specific pages pdf.ApplyStamp(myStamper, new[] { 0, 3, 5 }); // Apply a stamp array to all pages pdf.ApplyMultipleStamps(stampArray); // Apply a stamp array to a specific page pdf.ApplyMultipleStamps(stampArray, 0); // Apply a stamp array to specific pages pdf.ApplyMultipleStamps(stampArray, new[] { 0, 3, 5 }); // And some Async versions of the above await pdf.ApplyStampAsync(myStamper, 4); await pdf.ApplyMultipleStampsAsync(stampArray); // Additional Watermark apply method string html = "<h1> Example Title <h1/>"; int rotation = 0; int watermarkOpacity = 30; pdf.ApplyWatermark(html, rotation, watermarkOpacity);

Dim pdf = New PdfDocument("/assets/example.pdf") ' Apply one stamp to all pages pdf.ApplyStamp(myStamper) ' Apply one stamp to a specific page pdf.ApplyStamp(myStamper, 0) ' Apply one stamp to specific pages pdf.ApplyStamp(myStamper, { 0, 3, 5 }) ' Apply a stamp array to all pages pdf.ApplyMultipleStamps(stampArray) ' Apply a stamp array to a specific page pdf.ApplyMultipleStamps(stampArray, 0) ' Apply a stamp array to specific pages pdf.ApplyMultipleStamps(stampArray, { 0, 3, 5 }) ' And some Async versions of the above Await pdf.ApplyStampAsync(myStamper, 4) Await pdf.ApplyMultipleStampsAsync(stampArray) ' Additional Watermark apply method Dim html As String = "<h1> Example Title <h1/>" Dim rotation As Integer = 0 Dim watermarkOpacity As Integer = 30 pdf.ApplyWatermark(html, rotation, watermarkOpacity)

new Length(value: 5, unit: MeasurementUnit.Inch); // 5 inches new Length(value: 25, unit: MeasurementUnit.Pixel);// 25px new Length(); // 0% of the page dimension because value is defaulted to zero and unit is defaulted to percentage new Length(value: 20); // 20% of the page dimension

Dim tempVar As New Length(value:= 5, unit:= MeasurementUnit.Inch) ' 5 inches Dim tempVar2 As New Length(value:= 25, unit:= MeasurementUnit.Pixel) ' 25px Dim tempVar3 As New Length() ' 0% of the page dimension because value is defaulted to zero and unit is defaulted to percentage Dim tempVar4 As New Length(value:= 20) ' 20% of the page dimension

HtmlStamper logoStamper = new HtmlStamper { VerticalOffset = new Length(15, MeasurementUnit.Percentage), HorizontalOffset = new Length(1, MeasurementUnit.Inch) // set other properties... };

Dim logoStamper As New HtmlStamper With {	.VerticalOffset = New Length(15, MeasurementUnit.Percentage),	.HorizontalOffset = New Length(1, MeasurementUnit.Inch) }

// Step 1. Creating a PDF with editable forms from HTML using form and input tags const string formHtml = @" <html> <body> <h2>Editable PDF Form</h2> <form> First name: <br> <input type='text' name='firstname' value=''> <br> Last name: <br> <input type='text' name='lastname' value=''> </form> </body> </html>"; // Instantiate Renderer var renderer = new ChromePdfRenderer(); renderer.RenderingOptions.CreatePdfFormsFromHtml = true; renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf"); // Step 2. Reading and Writing PDF form values. var formDocument = PdfDocument.FromFile("BasicForm.pdf"); // Read the value of the "firstname" field var firstNameField = formDocument.Form.FindFormField("firstname"); // Read the value of the "lastname" field var lastNameField = formDocument.Form.FindFormField("lastname");

' Step 1. Creating a PDF with editable forms from HTML using form and input tags Const formHtml As String = " <html> <body> <h2>Editable PDF Form</h2> <form> First name: <br> <input type='text' name='firstname' value=''> <br> Last name: <br> <input type='text' name='lastname' value=''> </form> </body> </html>" ' Instantiate Renderer Dim renderer = New ChromePdfRenderer() renderer.RenderingOptions.CreatePdfFormsFromHtml = True renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf") ' Step 2. Reading and Writing PDF form values. Dim formDocument = PdfDocument.FromFile("BasicForm.pdf") ' Read the value of the "firstname" field Dim firstNameField = formDocument.Form.FindFormField("firstname") ' Read the value of the "lastname" field Dim lastNameField = formDocument.Form.FindFormField("lastname")

var formDocument = PdfDocument.FromFile("BasicForm.pdf"); // Set and Read the value of the "firstname" field var firstNameField = formDocument.Form.FindFormField("firstname"); firstNameField.Value = "Minnie"; Console.WriteLine("FirstNameField value: {0}", firstNameField.Value); // Set and Read the value of the "lastname" field var lastNameField = formDocument.Form.FindFormField("lastname"); lastNameField.Value = "Mouse"; Console.WriteLine("LastNameField value: {0}", lastNameField.Value); formDocument.SaveAs("FilledForm.pdf");

Dim formDocument = PdfDocument.FromFile("BasicForm.pdf") ' Set and Read the value of the "firstname" field Dim firstNameField = formDocument.Form.FindFormField("firstname") firstNameField.Value = "Minnie" Console.WriteLine("FirstNameField value: {0}", firstNameField.Value) ' Set and Read the value of the "lastname" field Dim lastNameField = formDocument.Form.FindFormField("lastname") lastNameField.Value = "Mouse" Console.WriteLine("LastNameField value: {0}", lastNameField.Value) formDocument.SaveAs("FilledForm.pdf")