945162: How to hide form field based on user in PdfViewer WPF control

FormFields/User-BasedFormFieldVisibility/App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
+    </startup>
+</configuration>

FormFields/User-BasedFormFieldVisibility/App.xaml

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

FormFields/User-BasedFormFieldVisibility/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 User_BasedFormFieldVisibility
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

FormFields/User-BasedFormFieldVisibility/EsigningPdfFormsViewModel.cs

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+using System;
+using System.Collections.ObjectModel;
+using System.IO;
+using System.Windows;
+using System.Windows.Resources;
+
+namespace User_BasedFormFieldVisibility
+{
+    public class EsigningPdfFormsViewModel
+    {
+        private Stream m_documentStream;
+        public EsigningPdfFormsViewModel()
+        {
+            this.Employees = new ObservableCollection<Employee>();
+            string andrewFilePath = "../../Data/profile1.png";
+            string anneFilePath = "../../Data/profile2.png";
+
+            Employees.Add(new Employee
+            {
+                Name = "Andrew Fuller",
+                ProfilePicture = GetFileStream("profile1.png"),
+                Mail = "[email protected]",
+                BorderColor = true,
+
+            });
+            Employees.Add(new Employee
+            {
+                Name = "Anne Dodsworth",
+                ProfilePicture = GetFileStream("profile2.png"),
+                Mail = "[email protected]",
+                BorderColor = false,
+
+            });
+        }
+
+        /// <summary>
+        /// Gets or sets the document path.
+        /// </summary>
+        public Stream DocumentStream
+        {
+            get
+            {
+                return m_documentStream;
+            }
+            set
+            {
+                m_documentStream = value;
+            }
+        }
+        /// <summary>
+        /// Gets or sets the collection of Employees.
+        /// </summary>
+        public ObservableCollection<Employee> Employees { get; set; }
+        private Stream GetFileStream(string filePath)
+        {
+            Uri uriResource = new Uri("/User-BasedFormFieldVisibility;component/Data/" + filePath, UriKind.Relative);
+            StreamResourceInfo streamResourceInfo = Application.GetResourceStream(uriResource);
+            return streamResourceInfo.Stream;
+        }
+    }
+    /// <summary>
+    /// Class to represent the details of the Employees
+    /// </summary>
+    public class Employee
+    {
+        public string Name { get; set; }
+        public Stream ProfilePicture { get; set; }
+        public string Mail { get; set; }
+        public bool BorderColor { get; set; }
+
+    }
+}

FormFields/User-BasedFormFieldVisibility/MainWindow.xaml

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+<Window xmlns:cc="clr-namespace:Syncfusion.Windows.PdfViewer;assembly=Syncfusion.PdfViewer.WPF"  x:Class="User_BasedFormFieldVisibility.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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:User_BasedFormFieldVisibility" xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Window.DataContext>
+        <local:EsigningPdfFormsViewModel/>
+    </Window.DataContext>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="50" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+        <DockPanel>
+            <Grid>
+                <Grid.DataContext>
+                    <local:EsigningPdfFormsViewModel/>
+                </Grid.DataContext>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="6*" />
+                    <ColumnDefinition Width="2*" />
+                </Grid.ColumnDefinitions>
+                <syncfusion:ComboBoxAdv x:Name="comboBox" Grid.Row="0" Grid.Column="0" Height="38" Width="220" Margin="10,5,0,5" HorizontalAlignment="Left" VerticalAlignment="Top" ItemsSource="{Binding Employees}" SelectedIndex="0" SelectionChanged="ComboBoxAdv_SelectionChanged">
+                    <syncfusion:ComboBoxAdv.ItemTemplate>
+                        <DataTemplate>
+                            <Grid>
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="45"/>
+                                    <ColumnDefinition Width="*"/>
+                                </Grid.ColumnDefinitions>
+                                <Border BorderBrush="White" BorderThickness="1" Background="Transparent" Width="32" Height="32" HorizontalAlignment="Center" VerticalAlignment="Center">
+                                    <Border.CornerRadius>
+                                        <CornerRadius TopLeft="16" TopRight="16" BottomLeft="16" BottomRight="16"/>
+                                    </Border.CornerRadius>
+                                    <Image Source="{Binding ProfilePicture}" Stretch="Fill" Width="30" Height="30" />
+                                </Border>
+                                <Grid Grid.Column="1" Grid.Row="1" VerticalAlignment="Center" >
+                                    <Grid.RowDefinitions>
+                                        <RowDefinition Height="*"></RowDefinition>
+                                        <RowDefinition Height="*"></RowDefinition>
+                                    </Grid.RowDefinitions>
+                                    <TextBlock Text="{Binding Name}" FontSize="13" Grid.Row="0"/>
+                                    <TextBlock Text="{Binding Mail}" FontSize="11" Grid.Row="1"/>
+                                </Grid>
+                            </Grid>
+                        </DataTemplate>
+                    </syncfusion:ComboBoxAdv.ItemTemplate>
+                </syncfusion:ComboBoxAdv>
+                <syncfusion:ButtonAdv x:Name="buttonAdv" Label="Finish Signing" IconHeight="0" IconWidth="0" Grid.Column="1" Margin="0,0,10,0" Width="150" Height="40" BorderThickness="3" CornerRadius="5"  HorizontalAlignment="Right" VerticalAlignment="Center" Click="button_Click" />
+            </Grid>
+        </DockPanel>
+        <cc:PdfViewerControl
+            x:Name="pdfviewer"
+            Grid.Row="1"
+            Margin="8,0,8,8"
+            AllowDrop="True"
+            BorderThickness="1"
+            WarnBeforeClose="False"
+            ItemSource="{Binding DocumentStream}"
+            ShowToolbar="False"
+            DocumentLoaded ="pdfviewer_DocumentLoaded"
+            ZoomMode="FitPage">
+        </cc:PdfViewerControl>  
+    </Grid>
+</Window>