910857 - How to add a new button to the vertical toolbar of the WPF PdfViewer

Toolbar/AddButtonsInVerticalToolbar/AddButtonsInVerticalToolbar.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{D8283AF1-7E48-4DE5-B83E-E1E1F9C88152}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <RootNamespace>AddButtonsInVerticalToolbar</RootNamespace>
+    <AssemblyName>AddButtonsInVerticalToolbar</AssemblyName>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+	<PackageReference Include="Syncfusion.PdfViewer.WPF" Version="*" />
+	<PackageReference Include="Syncfusion.Tools.WPF" Version="*" />
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="PdfReport.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="packages.config" />
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>

Toolbar/AddButtonsInVerticalToolbar/AddButtonsInVerticalToolbar.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35707.178 d17.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AddButtonsInVerticalToolbar", "AddButtonsInVerticalToolbar.csproj", "{D8283AF1-7E48-4DE5-B83E-E1E1F9C88152}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D8283AF1-7E48-4DE5-B83E-E1E1F9C88152}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D8283AF1-7E48-4DE5-B83E-E1E1F9C88152}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D8283AF1-7E48-4DE5-B83E-E1E1F9C88152}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D8283AF1-7E48-4DE5-B83E-E1E1F9C88152}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Toolbar/AddButtonsInVerticalToolbar/AddButtonsInVerticalToolbar_NET.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.PdfViewer.WPF" Version="*" />
+	<PackageReference Include ="Syncfusion.Tools.WPF" Version = "*" />
+  </ItemGroup>
+
+</Project>

Toolbar/AddButtonsInVerticalToolbar/AddButtonsInVerticalToolbar_NET.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35707.178 d17.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AddButtonsInVerticalToolbar_NET", "AddButtonsInVerticalToolbar_NET.csproj", "{64C42154-1D65-4D2D-80E2-81C3BF55D531}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{64C42154-1D65-4D2D-80E2-81C3BF55D531}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{64C42154-1D65-4D2D-80E2-81C3BF55D531}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{64C42154-1D65-4D2D-80E2-81C3BF55D531}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{64C42154-1D65-4D2D-80E2-81C3BF55D531}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Toolbar/AddButtonsInVerticalToolbar/App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
+    </startup>
+</configuration>

Toolbar/AddButtonsInVerticalToolbar/App.xaml

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+<Application x:Class="AddButtonsInVerticalToolbar.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:AddButtonsInVerticalToolbar"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+
+    </Application.Resources>
+</Application>

Toolbar/AddButtonsInVerticalToolbar/App.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AddButtonsInVerticalToolbar
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

Toolbar/AddButtonsInVerticalToolbar/MainWindow.xaml

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+<syncfusion:RibbonWindow x:Class="AddButtonsInVerticalToolbar.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
+        ShowHelpButton="False"
+        WindowStyle="SingleBorderWindow"
+        Loaded="RibbonWindow_Loaded"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:AddButtonsInVerticalToolbar"
+        xmlns:cc="clr-namespace:Syncfusion.Windows.PdfViewer;assembly=Syncfusion.PdfViewer.WPF"
+        mc:Ignorable="d"
+        Title="" Height="450" Width="800">
+    <syncfusion:RibbonWindow.DataContext>
+        <local:PdfReport />
+    </syncfusion:RibbonWindow.DataContext>
+    <cc:PdfViewerControl x:Name="pdfViewer"
+                     AllowDrop="True"
+                     WarnBeforeClose="False"
+                     ItemSource="{Binding Path=DocumentStream}"
+                     ZoomMode="FitWidth" />
+</syncfusion:RibbonWindow>

Toolbar/AddButtonsInVerticalToolbar/MainWindow.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using Syncfusion.Windows.PdfViewer;
+using Syncfusion.Windows.Tools.Controls;
+
+namespace AddButtonsInVerticalToolbar
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : RibbonWindow
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+
+        private void RibbonWindow_Loaded(object sender, RoutedEventArgs e)
+        {
+            OutlinePane outlinePane = pdfViewer.Template.FindName("PART_OutlinePane", pdfViewer) as OutlinePane;
+
+            StackPanel stackPanel = (StackPanel)outlinePane.Template.FindName("PART_OutlineStackPanel", outlinePane);
+
+            Button button1 = new Button();
+            button1.Margin = new Thickness(0, 8, 0, 8);
+            button1.Width = 30;
+            button1.Height = 25;
+            button1.Content = "B1";
+            stackPanel.Children.Add(button1);
+            button1.Click += Button1_Click; ;
+
+            Button button2 = new Button();
+            button2.Margin = new Thickness(0, 4, 0, 8);
+            button2.Width = 30;
+            button2.Height = 25;
+            button2.Content = "B2";
+            stackPanel.Children.Add(button2);
+            button2.Click += Button2_Click; ;
+        }
+
+        private void Button1_Click(object sender, RoutedEventArgs e)
+        {
+            string urlToOpen = "https://help.syncfusion.com/wpf/pdf-viewer/overview";
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = urlToOpen,
+                UseShellExecute = true
+            });
+        }
+
+        private void Button2_Click(object sender, RoutedEventArgs e)
+        {
+            string urlToOpen = "https://help.syncfusion.com/wpf/pdf-viewer/getting-started";
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = urlToOpen,
+                UseShellExecute = true
+            });
+        }
+    }
+}

Toolbar/AddButtonsInVerticalToolbar/PdfReport.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AddButtonsInVerticalToolbar
+{
+    internal class PdfReport : INotifyPropertyChanged
+    {
+        string filePath;
+        private Stream docStream;
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public Stream DocumentStream
+        {
+            get
+            {
+                return docStream;
+            }
+            set
+            {
+                docStream = value;
+                OnPropertyChanged(new PropertyChangedEventArgs("DocumentStream"));
+            }
+        }
+
+        public PdfReport()
+        {
+#if NETCOREAPP
+            filePath = @"../../../Data/PDF_Succinctly.pdf";
+#else
+            filePath = @"../../Data/PDF_Succinctly.pdf";
+#endif
+            //Load the stream from the local system.
+            docStream = new FileStream(filePath, FileMode.OpenOrCreate);
+        }
+
+        public void OnPropertyChanged(PropertyChangedEventArgs e)
+        {
+            if (PropertyChanged != null)
+                PropertyChanged(this, e);
+        }
+    }
+}

Toolbar/AddButtonsInVerticalToolbar/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyCopyright("Copyright ©  2025")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//