<FixedDocument  
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xml:lang="en-au">
   <FixedDocument.Resources>
      <BooleanToVisibilityConverter x:Key="visConverter"/>
   </FixedDocument.Resources>
   <PageContent>
      <FixedPage Width="793.76" Height="1122.56">
         <!-- Page 1 Begins Here -->
         <StackPanel Margin="50">
            <Border BorderThickness="5" BorderBrush="Gray" CornerRadius="10"
               Padding="20" Width="690">
               <StackPanel Orientation="Horizontal" Margin="0 0 0 0">
                  <Image Source="truck.jpg" HorizontalAlignment="Left"/>
                  <TextBlock Margin="30 0 0 0" FontSize="50"
                     Text="{Binding Path=Heading}" VerticalAlignment="Center"/>
               </StackPanel>
            </Border>
            <TextBlock Margin="0 30 0 0"
               Text="{Binding Path=CurrentDate, StringFormat='{}{0:d MMMM yyyy}'}"/>
            <TextBlock Margin="0 30 0 0"
               Text="{Binding Path=Name, StringFormat='Dear {0},'}" />
            <ItemsControl Margin="30 20 0 0" ItemsSource="{Binding Path=DotPoints}"
               HorizontalAlignment="Left">
               <ItemsControl.ItemTemplate>
                  <DataTemplate>
                     <StackPanel Margin="0,8,0,0" Orientation="Horizontal" >
                        <TextBlock Text="• " />
                        <TextBlock Text="{Binding}" TextWrapping="Wrap" Width="400"/>
                     </StackPanel>
                  </DataTemplate>
               </ItemsControl.ItemTemplate>
            </ItemsControl>
            <TextBlock Margin="0 30 0 0"
               Text="Congratulations, you are entitled to a 50% discount!"
               Visibility="{Binding Path=GiveDiscount,
                                        Converter={StaticResource visConverter}}"/>
         </StackPanel>
      </FixedPage>
   </PageContent>
   <PageContent>
      <FixedPage Width="793.76" Height="1122.56">
         <!-- Page 2 Begins Here -->
         <TextBlock Margin="50" Text="Nothing to see here."/>
      </FixedPage>
   </PageContent>
</FixedDocument> 

<Window
    x:Class="ODIN.DataSheetFixedDocument"
    WindowStartupLocation="CenterScreen"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:v="clr-namespace:ODIN.View"
    xmlns:local="clr-namespace:ODIN"    
    local:WindowCustomizer.CanMaximize="False"
    local:WindowCustomizer.CanMinimize="False"
    Title="Administrated Master View"
    Width="1024"
    Height="768"
    >
    <Grid Name="MainGrid">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="97*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="115*"  />
        </Grid.RowDefinitions>

        <FixedPage Width="1024" Height="768" x:Name="theFixedPage">
            <StackPanel Background="Green" Width="200" Height="30" HorizontalAlignment="Left" Margin="0,100,0,0" Grid.Column="0" Grid.Row="0">
                <TextBlock Width="465" HorizontalAlignment="Left" Height="92" Foreground="Black" Margin="0,0,-265,0">Hello</TextBlock>
            </StackPanel>
        </FixedPage>
        <DocumentViewer>
            <FixedDocument x:Name="uiFixedDocument">

            </FixedDocument>
        </DocumentViewer>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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.Shapes;

namespace ODIN
{
    /// <summary>
    /// Interaction logic for DataSheetFixedDocument.xaml
    /// </summary>
    public partial class DataSheetFixedDocument : Window
    {
        public DataSheetFixedDocument()
        {
            InitializeComponent();

            Grid grid = new Grid();
            grid = (Grid)this.theFixedPage.Parent;
            grid.Children.Remove(this.theFixedPage);
            PageContent pageContent = new PageContent();
            pageContent.Child = theFixedPage;
            FixedDocument.Pages.Add(pageContent);
            uiFixedDocument.Pages.Add(pageContent);
            // Below is where I get the not able to convert
            // FixedPage to an UIElement.
            grid.Children.Add((UIElement) uiFixedDocument);
        }
    }
}

PLATFORM VERSION INFO
    Windows             : 6.1.7601.65536 (Win32NT)
    Common Language Runtime     : 4.0.30319.42000
    System.Deployment.dll       : 4.6.118.0 built by: NETFXREL3STAGE
    clr.dll             : 4.6.1076.0 built by: NETFXREL3STAGE
    dfdll.dll           : 4.6.118.0 built by: NETFXREL3STAGE
    dfshim.dll          : 4.0.41209.0 (Main.041209-0000)

SOURCES
    Deployment url          : <a href="http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.xbap">http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.xbap</a>
    Application url         : <a href="http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.exe.manifest">http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.exe.manifest</a>

IDENTITIES
    Deployment Identity     : WpfBrowserApplication12015.xbap, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c836e075e9e59aa1, processorArchitecture=msil
    Application Identity        : WpfBrowserApplication12015.exe, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c836e075e9e59aa1, processorArchitecture=msil, type=win32

APPLICATION SUMMARY
    * Online only application.
    * Browser-hosted application.

ERROR SUMMARY
    Below is a summary of the errors, details of these errors are listed later in the log.
    * An exception occurred while downloading the application. Following failure messages were detected:
        + Downloading <a href="http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.exe.deploy">http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.exe.deploy</a> did not succeed.
        + The remote server returned an error: (404) Not Found.

COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.

WARNINGS
    There were no warnings during this operation.

OPERATION PROGRESS STATUS
    No phase information is available.

ERROR DETAILS
    Following errors were detected during this operation.
    * [9/18/2016 8:02:15 PM] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)
        - Downloading <a href="http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.exe.deploy">http://localhost/WPFBrowserApplication/WpfBrowserApplication12015.exe.deploy</a> did not succeed.
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
            at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()
            at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState)
            at System.Deployment.Application.DownloadManager.DownloadDependencies(SubscriptionState subState, AssemblyManifest deployManifest, AssemblyManifest appManifest, Uri sourceUriBase, String targetDirectory, String group, IDownloadNotification notification, DownloadOptions options)
            at System.Deployment.Application.DeploymentManager.SynchronizeCore(Boolean blocking)
            at System.Deployment.Application.DeploymentManager.SynchronizeAsyncWorker()
        - Inner Exception -
        System.Net.WebException
        - The remote server returned an error: (404) Not Found.
        - Source: System
        - Stack trace:
            at System.Net.HttpWebRequest.GetResponse()
            at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)

COMPONENT STORE TRANSACTION DETAILS
    No transaction information is available.

public static class EditWindow
{
    public static string buttonString;
    public static Button button;

    // This is the UserControl
    public static View.ApplicationInfoView uc;

}

// UserControl as a View in the parent window:

<v:ApplicationInfoView />

ApplicationInfoView StackPanels

<StackPanel Name="Sp1">

<StackPanel Name="Sp2">

<StackPanel Name="Sp2">

// UserControl - ApplicationInfoView in the constructor

EditWindow.uc = this;

// Button Click event in the Parent Window

private void btnEdit_Click(object sender, RoutedEventArgs)
{
    EditWindow.uc.editAppInfo();
}

// editAppInfo method in the UserControl -  //ApplicationInfoView 

editAppInfo()
{
    EditWindow.uc.sp1.Visibility = Visibility.Collapsed;
    EditWindow.uc.sp2.Visibility = Visibility.Visible;
    EditWindow.uc.sp3.Visibility = Visibility.Visibile;
}