265910: Added Sample for Batch Printing using WinForms PdfViewerControl

Printing/BatchPrinting/BatchPrinting.slnx

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+<Solution>
+  <Project Path="BatchPrinting/BatchPrinting.csproj" />
+</Solution>

Printing/BatchPrinting/BatchPrinting/BatchPrinting.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.PdfViewer.Windows" Version="*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="Data\" />
+  </ItemGroup>
+
+</Project>

Printing/BatchPrinting/BatchPrinting/BatchPrinting.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+    <ItemGroup>
+        <Compile Update="Form1.cs">
+            <SubType>Form</SubType>
+        </Compile>
+    </ItemGroup>
+</Project>

Printing/BatchPrinting/BatchPrinting/Form1.cs

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+using Syncfusion.Windows.Forms.PdfViewer;
+
+namespace BatchPrinting
+{
+    public partial class Form1 : Form
+    {
+        private string pdfFolder = @"../../../Data";
+        PdfViewerControl viewer;
+
+        private string[] files = [];
+        private int currentIndex = 0;
+
+        public Form1()
+        {
+            InitializeComponent();
+
+            viewer = new PdfViewerControl();
+            viewer.EndPrint += Viewer_EndPrint;
+
+            this.Shown += Form1_Shown;
+        }
+        private void Form1_Shown(object? sender, EventArgs e)
+        {
+            LoadFilesAndStartPrinting();
+        }
+        private void LoadFilesAndStartPrinting()
+        {
+            try
+            {
+                if (!Directory.Exists(pdfFolder))
+                {
+                    return;
+                }
+
+                files = Directory
+                    .GetFiles(pdfFolder, "*.pdf")
+                    .ToArray();
+
+                if (files.Length == 0)
+                {
+                    return;
+                }
+
+                currentIndex = 0;
+                PrintCurrentFile();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(
+                    $"Failed to load PDF files.\n\n{ex.Message}",
+                    "Error",
+                    MessageBoxButtons.OK,
+                    MessageBoxIcon.Error);
+            }
+        }
+
+        private void PrintCurrentFile()
+        {
+            if (currentIndex >= files.Length)
+            {
+                MessageBox.Show(
+                    "Batch printing completed.",
+                    "Completed",
+                    MessageBoxButtons.OK,
+                    MessageBoxIcon.Information);
+
+                return;
+            }
+
+            try
+            {
+                string file = files[currentIndex];
+
+                viewer.Load(file);
+                viewer.Print(false);
+            }
+            catch (Exception ex)
+            {
+                // Log error and continue with next file
+                MessageBox.Show(
+                    $"Failed to print:\n{files[currentIndex]}\n\n{ex.Message}",
+                    "Print Error",
+                    MessageBoxButtons.OK,
+                    MessageBoxIcon.Warning);
+            }
+        }
+
+        private void Viewer_EndPrint(object? sender, EndPrintEventArgs e)
+        {
+            currentIndex++;
+            BeginInvoke(PrintCurrentFile);
+        }
+    }
+}

Printing/BatchPrinting/BatchPrinting/Form1.resx

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+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

Printing/BatchPrinting/BatchPrinting/Program.cs

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+namespace BatchPrinting
+{
+    internal static class Program
+    {
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            // To customize application configuration such as set high DPI settings or default font,
+            // see https://aka.ms/applicationconfiguration.
+            ApplicationConfiguration.Initialize();
+            Application.Run(new Form1());
+        }
+    }
+}