980802: Updated GitHub sample code in PDF Example branch.

Annotation/Adding-quad-points-to-existing-redaction-annotations/.NET/Adding-quad-points-to-existing-redaction-annotations.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36408.4 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Adding-quad-points-to-existing-redaction-annotations", "Adding-quad-points-to-existing-redaction-annotations\Adding-quad-points-to-existing-redaction-annotations.csproj", "{7EAC121E-76EB-4D12-AF60-D457BE069660}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{7EAC121E-76EB-4D12-AF60-D457BE069660}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7EAC121E-76EB-4D12-AF60-D457BE069660}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7EAC121E-76EB-4D12-AF60-D457BE069660}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7EAC121E-76EB-4D12-AF60-D457BE069660}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {AC2186CF-C132-4B74-9E9B-995A2480B219}
+	EndGlobalSection
+EndGlobal

Annotation/Adding-quad-points-to-existing-redaction-annotations/.NET/Adding-quad-points-to-existing-redaction-annotations/Adding-quad-points-to-existing-redaction-annotations.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Adding_quad_points_to_existing_redaction_annotations</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.Pdf.Net.Core" Version="*" />
+  </ItemGroup>
+
+</Project>

Annotation/Adding-quad-points-to-existing-redaction-annotations/.NET/Adding-quad-points-to-existing-redaction-annotations/Program.cs

@@ -0,0 +1,44 @@
+using Syncfusion.Drawing;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Interactive;
+using Syncfusion.Pdf.Parsing;
+
+// Load the existing PDF document using FileStream
+using (FileStream inputStream = new FileStream(Path.GetFullPath(@"Data/Input.pdf"), FileMode.Open, FileAccess.Read))
+{
+    // Load the PDF document from the input stream
+    using (PdfLoadedDocument ldoc = new PdfLoadedDocument(inputStream))
+    {
+        //Load the existing PdfLoadedRedactionAnnotation 
+        PdfLoadedRedactionAnnotation annot = ldoc.Pages[0].Annotations[0] as PdfLoadedRedactionAnnotation;
+
+        //set the bounds 
+        List<RectangleF> bounds = new List<RectangleF>();
+        bounds.Add(new RectangleF(100, 100, 50, 20));
+        bounds.Add(new RectangleF(200, 150, 60, 25));
+        annot.BoundsCollection = bounds;
+
+        //set the inner color 
+        annot.InnerColor = Color.Black;
+        //set the border color 
+        annot.BorderColor = Color.Green;
+        //set the text color 
+        annot.TextColor = Color.Yellow;
+        //set the font 
+        annot.Font = new PdfStandardFont(PdfFontFamily.Helvetica, 10);
+        //set overlay text 
+        annot.OverlayText = "Redact";
+        //set text alignment 
+        annot.TextAlignment = PdfTextAlignment.Center;
+        annot.RepeatText = true;
+
+        // Save the modified document using a new FileStream
+        using (FileStream outputStream = new FileStream(Path.GetFullPath(@"Output/Output.pdf"), FileMode.Create, FileAccess.Write))
+        {
+            // Save changes to a new PDF file
+            ldoc.Save(outputStream);
+        }
+        // Close the document and release resources
+        ldoc.Close(true);
+    }
+}

Annotation/Multi-line-text-redaction-using-quad-points/.NET/Multi-line-text-redaction-using-quad-points.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36408.4 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Multi-line-text-redaction-using-quad-points", "Multi-line-text-redaction-using-quad-points\Multi-line-text-redaction-using-quad-points.csproj", "{4ACF1F8B-A43B-4148-9452-0587200478F8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4ACF1F8B-A43B-4148-9452-0587200478F8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4ACF1F8B-A43B-4148-9452-0587200478F8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4ACF1F8B-A43B-4148-9452-0587200478F8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4ACF1F8B-A43B-4148-9452-0587200478F8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {735E1E3B-6CCF-41EC-9ABA-187BF9AA9851}
+	EndGlobalSection
+EndGlobal

Annotation/Multi-line-text-redaction-using-quad-points/.NET/Multi-line-text-redaction-using-quad-points/Multi-line-text-redaction-using-quad-points.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Multi_line_text_redaction_using_quad_points</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.Pdf.Net.Core" Version="*" />
+  </ItemGroup>
+
+</Project>

Annotation/Multi-line-text-redaction-using-quad-points/.NET/Multi-line-text-redaction-using-quad-points/Program.cs

@@ -0,0 +1,45 @@
+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Interactive;
+
+//Create a new PDF document.
+PdfDocument document = new PdfDocument();
+//Create a new page. 
+PdfPage page = document.Pages.Add();
+//Creates a new Redaction annotation. 
+PdfRedactionAnnotation annot = new PdfRedactionAnnotation();
+
+//set the bounds collection of redaction annotation. 
+List<RectangleF> bounds = new List<RectangleF>();
+bounds.Add(new RectangleF(100, 100, 50, 20));
+bounds.Add(new RectangleF(200, 150, 60, 25));
+annot.BoundsCollection = bounds;
+
+//set the innercolor 
+annot.InnerColor = Color.Black;
+//set the bordercolor 
+annot.BorderColor = Color.Green;
+//set the textcolor 
+annot.TextColor = Color.Yellow;
+//set the font 
+annot.Font = new PdfStandardFont(PdfFontFamily.Helvetica, 10);
+//set overlaytext 
+annot.OverlayText = "Redact";
+//set text alignment 
+annot.TextAlignment = PdfTextAlignment.Right;
+//Assign the RepeatText 
+annot.RepeatText = true;
+
+//Add the annotation to the page. 
+page.Annotations.Add(annot);
+
+
+// Save the modified document using a new FileStream
+using (FileStream outputStream = new FileStream(Path.GetFullPath(@"Output/Output.pdf"), FileMode.Create, FileAccess.Write))
+{
+    // Save changes to a new PDF file
+    document.Save(outputStream);
+}
+// Close the document and release resources
+document.Close(true);

Digital Signature/Externally-sign-the-PDF-document-using-IPdfExternalSigner/.NET/Externally-sign-the-PDF-document/Program.cs

@@ -4,60 +4,80 @@
 using System.Security.Cryptography.X509Certificates;
 using System.Security.Cryptography;
 
-namespace Externally_sign_the_PDF_document {
-    internal class Program {
-        static void Main(string[] args) {
-            //Get the stream from the document
-            FileStream documentStream = new FileStream(Path.GetFullPath(@"Data/Barcode.pdf"), FileMode.Open, FileAccess.Read);
-            //Load the existing PDF document
+namespace Externally_sign_the_PDF_document
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            // Get the stream from the document
+            FileStream documentStream = new FileStream(Path.GetFullPath(@"../../../Data/Barcode.pdf"), FileMode.Open, FileAccess.Read);
+
+            // Load the existing PDF document
             PdfLoadedDocument loadedDocument = new PdfLoadedDocument(documentStream);
 
-            //Creates a digital signature.
+            // Create a digital signature
             PdfSignature signature = new PdfSignature(loadedDocument, loadedDocument.Pages[0], null, "Signature");
-            //Sets the signature information.
+
+            // Set the signature information
             signature.Bounds = new RectangleF(new PointF(0, 0), new SizeF(100, 30));
             signature.Settings.CryptographicStandard = CryptographicStandard.CADES;
             signature.Settings.DigestAlgorithm = DigestAlgorithm.SHA1;
 
-            //Create an external signer.
+            // Create an external signer
             IPdfExternalSigner externalSignature = new ExternalSigner("SHA1");
 
-            //Add public certificates.
+            // Add public certificates
             List<X509Certificate2> certificates = new List<X509Certificate2>();
-            certificates.Add(new X509Certificate2(new X509Certificate2(Path.GetFullPath(@"Data/PDF.pfx"), "password123")));
+            certificates.Add(new X509Certificate2(Path.GetFullPath(@"../../../Data/PDF.pfx"), "password123"));
             signature.AddExternalSigner(externalSignature, certificates, null);
 
-            //Create file stream.
-            using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"Output/Output.pdf"), FileMode.Create, FileAccess.ReadWrite)) {
-                //Save the PDF document to file stream.
+            // Create file stream
+            using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"../../../Output/Output.pdf"), FileMode.Create, FileAccess.ReadWrite))
+            {
+                // Save the PDF document to file stream
                 loadedDocument.Save(outputFileStream);
             }
-            //Close the document.
+
+            // Close the document
             loadedDocument.Close(true);
         }
-        //Create the external signer class and sign the document hash.
-        class ExternalSigner : IPdfExternalSigner {
+
+        // Create the external signer class and sign the document hash
+        class ExternalSigner : IPdfExternalSigner
+        {
             private string _hashAlgorithm;
-            public string HashAlgorithm {
+
+            public string HashAlgorithm
+            {
                 get { return _hashAlgorithm; }
             }
 
-            public ExternalSigner(string hashAlgorithm) {
+            public ExternalSigner(string hashAlgorithm)
+            {
                 _hashAlgorithm = hashAlgorithm;
             }
-            public byte[] Sign(byte[] message, out byte[] timeStampResponse) {
+
+            public byte[] Sign(byte[] message, out byte[] timeStampResponse)
+            {
                 timeStampResponse = null;
-                X509Certificate2 digitalID = new X509Certificate2(new X509Certificate2(Path.GetFullPath(@"Data/PDF.pfx"), "password123"));
-                if (digitalID.PrivateKey is System.Security.Cryptography.RSACryptoServiceProvider) {
-                    System.Security.Cryptography.RSACryptoServiceProvider rsa = (System.Security.Cryptography.RSACryptoServiceProvider)digitalID.PrivateKey;
-                    return rsa.SignData(message, HashAlgorithm);
+                X509Certificate2 digitalID = new X509Certificate2(Path.GetFullPath(@"../../../Data/PDF.pfx"), "password123");
+
+                if (digitalID.PrivateKey is RSACryptoServiceProvider rsaProvider)
+                {
+                    return rsaProvider.SignData(message, HashAlgorithm);
                 }
-                else if (digitalID.PrivateKey is RSACng) {
-                    RSACng rsa = (RSACng)digitalID.PrivateKey;
-                    return rsa.SignData(message, System.Security.Cryptography.HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1);
+                else if (digitalID.PrivateKey is RSACng rsaCng)
+                {
+                    return rsaCng.SignData(message, HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1);
                 }
+                else if (digitalID.PrivateKey is RSAOpenSsl rsaOpenSsl)
+                {
+                    return rsaOpenSsl.SignData(message, HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1);
+                }
+
                 return null;
             }
         }
     }
-}
+}