The sample demonstrates how to work with MarkerDesign in Silverlight via Spire.XLS.

Download template xls file.

Download data table file.

Download merged result file.

<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             x:Class="Report.App">
    <Application.Resources>        
    </Application.Resources>
</Application>

using System;
using System.Windows;
using System.Windows.Browser;
using Spire.License;

namespace Report
{
    public partial class App : Application
    {
        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            LicenseProvider.SetLicenseKey("your license key in license.elic.xml");
            this.RootVisual = new MainPage();
        }

        private void Application_Exit(object sender, EventArgs e)
        {

        }

        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                String exp = "throw new Error(\"Unhandled Error in Silverlight Application " + errorMsg + "\");";
                HtmlPage.Window.Eval(exp);
            }
            catch (Exception)
            {
            }
        }
    }
}

 Partial Public Class App
    Inherits Application

    public Sub New()
        InitializeComponent()
    End Sub
    
    Private Sub Application_Startup(ByVal o As Object, ByVal e As StartupEventArgs) _
            Handles Me.Startup
        Me.RootVisual = New MainPage()
    End Sub
    
    Private Sub Application_Exit(ByVal o As Object, ByVal e As EventArgs) Handles Me.Exit

    End Sub
    
    Private Sub Application_UnhandledException(ByVal sender As object, _
            ByVal e As ApplicationUnhandledExceptionEventArgs) Handles Me.UnhandledException

        ' If the app is running outside of the debugger then report the exception using
        ' the browser's exception mechanism. On IE this will display it a yellow alert 
        ' icon in the status bar and Firefox will display a script error.
        If Not System.Diagnostics.Debugger.IsAttached Then

            ' NOTE: This will allow the application to continue running after an exception has been thrown
            ' but not handled. 
            ' For production applications this error handling should be replaced with something that will 
            ' report the error to the website and stop the application.
            e.Handled = True
            Deployment.Current.Dispatcher.BeginInvoke( _
                New Action(Of ApplicationUnhandledExceptionEventArgs)(AddressOf ReportErrorToDOM), e)
        End If
    End Sub

   Private Sub ReportErrorToDOM(ByVal e As ApplicationUnhandledExceptionEventArgs)

        Try
            Dim errorMsg As String = e.ExceptionObject.Message + e.ExceptionObject.StackTrace
            errorMsg = errorMsg.Replace(""""c, "'"c).Replace(ChrW(13) & ChrW(10), "\n")

            System.Windows.Browser.HtmlPage.Window.Eval( _
                "throw new Error(""Unhandled Error in Silverlight Application " + errorMsg + """);")
        Catch
        
        End Try
    End Sub
    
End Class

<UserControl x:Class="Report.MainPage"
    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"
    mc:Ignorable="d"
    d:DesignHeight="600" d:DesignWidth="500"
             xmlns:dataInput="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
                  xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" >

    <Grid x:Name="LayoutRoot" Background="#FF003399" Height="450" Width="500" VerticalAlignment="Top" HorizontalAlignment="Center" Loaded="LayoutRoot_Loaded">
        <Grid.RowDefinitions>
            <RowDefinition Height="40" MaxHeight="40" MinHeight="40" />
            <RowDefinition />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
        </Grid.RowDefinitions>
        <dataInput:Label HorizontalAlignment="Center" Name="labelTitle" VerticalAlignment="Center" Content="Countries List" Foreground="White" FontWeight="Bold" FontSize="16" Grid.ColumnSpan="2" />
        <data:DataGrid AutoGenerateColumns="True" Grid.Row="1" HorizontalAlignment="Stretch" Name="dataGrid" VerticalAlignment="Stretch" Margin="1" />
        <Button Content="Generate" Grid.Row="2" HorizontalAlignment="Right" Margin="0,0,2,0" Name="buttonGenerate" VerticalAlignment="Center" Width="75" IsEnabled="False" Click="buttonGenerate_Click" />
    </Grid>
</UserControl>

using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Windows;
using System.Windows.Controls;

using Spire.Xls;

namespace Report
{
    public partial class MainPage : UserControl
    {
        public class Country
        {
            public String Name { get; set; }
            public String Capital { get; set; }
            public String Continent { get; set; }
            public double Area { get; set; }
            public long Population { get; set; }
        }

        private SaveFileDialog saveFileDialog = null;
        private List dataSource = null;
        private Workbook template = null;
        public MainPage()
        {
            InitializeComponent();
            this.saveFileDialog = new SaveFileDialog();
            this.saveFileDialog.Filter = "Excel workbooks (*.xls) |*.xls";
        }

        private void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
        {
            Assembly assembly = this.GetType().Assembly;
            foreach (String name in assembly.GetManifestResourceNames())
            {
                if (name.EndsWith(".DatatableSample.xls"))
                {
                    using (Stream stream = assembly.GetManifestResourceStream(name))
                    {
                        Workbook workbook = new Workbook();
                        workbook.LoadFromStream(stream);
                        Worksheet sheet = workbook.Worksheets[0];

                        this.dataSource = new List();
                        foreach (CellRange row in sheet.Rows)
                        {
                            if (row != null && row.Cells != null && row.Cells.Length == 5
                                && !row.Cells[0].IsBlank)
                            {
                                if (row.Cells[0].Row == 1)
                                {
                                    continue;
                                }
                                this.dataSource.Add(new Country()
                                {
                                    Name = row.Cells[0].Value,
                                    Capital = row.Cells[1].Value,
                                    Continent = row.Cells[2].Value,
                                    Area = row.Cells[3].NumberValue,
                                    Population = Convert.ToInt64(row.Cells[4].NumberValue)
                                });
                            }
                            else
                            {
                                break;
                            }
                        }
                        this.dataGrid.ItemsSource = this.dataSource;
                    }
                    this.buttonGenerate.IsEnabled = true;
                }
                else if(name.EndsWith(".MarkerDesignerSample.xls"))
                {
                    using (Stream stream = assembly.GetManifestResourceStream(name))
                    {
                        this.template = new Workbook();
                        this.template.LoadFromStream(stream);
                    }
                }
            }
        }

        private void buttonGenerate_Click(object sender, RoutedEventArgs e)
        {
            Worksheet worksheet = this.template.Worksheets[0];

            this.template.MarkerDesigner.AddParameter("Variable1", 1234.5678);
            this.template.MarkerDesigner.AddArray("Country", dataSource.ToArray());
            this.template.MarkerDesigner.Apply();

            worksheet.AllocatedRange.AutoFitRows();
            worksheet.AllocatedRange.AutoFitColumns();

            bool? result = this.saveFileDialog.ShowDialog();
            if (result.HasValue && result.Value)
            {
                using (Stream stream = this.saveFileDialog.OpenFile())
                {
                    this.template.SaveToStream(stream);
                }
            }
        }
    }
}

Imports System
Imports System.IO
Imports System.Net
Imports System.Reflection
Imports System.Windows
Imports System.Windows.Controls

Imports Spire.Xls

Partial Public Class MainPage
    Inherits UserControl

    Public Class Country
        Public Property Name() As [String]
            Get
                Return m_Name
            End Get
            Set(ByVal value As [String])
                m_Name = Value
            End Set
        End Property
        Private m_Name As [String]
        Public Property Capital() As [String]
            Get
                Return m_Capital
            End Get
            Set(ByVal value As [String])
                m_Capital = Value
            End Set
        End Property
        Private m_Capital As [String]
        Public Property Continent() As [String]
            Get
                Return m_Continent
            End Get
            Set(ByVal value As [String])
                m_Continent = Value
            End Set
        End Property
        Private m_Continent As [String]
        Public Property Area() As Double
            Get
                Return m_Area
            End Get
            Set(ByVal value As Double)
                m_Area = Value
            End Set
        End Property
        Private m_Area As Double
        Public Property Population() As Long
            Get
                Return m_Population
            End Get
            Set(ByVal value As Long)
                m_Population = Value
            End Set
        End Property
        Private m_Population As Long
    End Class

    Private saveFileDialog As SaveFileDialog = Nothing
    Private dataSource As List(Of Country) = Nothing
    Private xlsTemplate As Workbook = Nothing

    Public Sub New()
        InitializeComponent()
        Me.saveFileDialog = New SaveFileDialog()
        Me.saveFileDialog.Filter = "Excel workbooks (*.xls) |*.xls"
    End Sub

    Private Sub LayoutRoot_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
        Dim assembly As Assembly = Me.[GetType]().Assembly
        For Each name As [String] In assembly.GetManifestResourceNames()
            If name.EndsWith(".DatatableSample.xls") Then
                Using stream As Stream = assembly.GetManifestResourceStream(name)
                    Dim workbook As New Workbook()
                    workbook.LoadFromStream(stream)
                    Dim sheet As Worksheet = workbook.Worksheets(0)

                    Me.dataSource = New List(Of Country)()
                    For Each row As CellRange In sheet.Rows
                        If row IsNot Nothing AndAlso row.Cells IsNot Nothing AndAlso row.Cells.Length = 5 AndAlso Not row.Cells(0).IsBlank Then
                            If row.Cells(0).Row = 1 Then
                                Continue For
                            End If
                            Me.dataSource.Add(New Country() With { _
                             .Name = row.Cells(0).Value, _
                             .Capital = row.Cells(1).Value, _
                             .Continent = row.Cells(2).Value, _
                             .Area = row.Cells(3).NumberValue, _
                             .Population = Convert.ToInt64(row.Cells(4).NumberValue) _
                            })
                        Else
                            Exit For
                        End If
                    Next
                    Me.dataGrid.ItemsSource = Me.dataSource
                End Using
                Me.buttonGenerate.IsEnabled = True
            ElseIf name.EndsWith(".MarkerDesignerSample.xls") Then
                Using stream As Stream = assembly.GetManifestResourceStream(name)
                    Me.xlsTemplate = New Workbook()
                    Me.xlsTemplate.LoadFromStream(stream)
                End Using
            End If
        Next
    End Sub

    Private Sub buttonGenerate_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
        Dim worksheet As Worksheet = Me.xlsTemplate.Worksheets(0)

        Me.xlsTemplate.MarkerDesigner.AddParameter("Variable1", 1234.5678)
        Me.xlsTemplate.MarkerDesigner.AddArray("Country", dataSource.ToArray())
        Me.xlsTemplate.MarkerDesigner.Apply()

        worksheet.AllocatedRange.AutoFitRows()
        worksheet.AllocatedRange.AutoFitColumns()

        Dim result As System.Nullable(Of Boolean) = Me.saveFileDialog.ShowDialog()
        If result.HasValue AndAlso result.Value Then
            Using stream As Stream = Me.saveFileDialog.OpenFile()
                Me.xlsTemplate.SaveToStream(stream)
            End Using
        End If
    End Sub
End Class

The sample demonstrates how to work with MailMerge in Silverlight via Spire.Doc.

Download template doc file.

Download merged result file.

<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             x:Class="MailMergeSL.App">
    <Application.Resources>        
    </Application.Resources>
</Application>

using System;
using System.Windows;
using System.Windows.Browser;
using Spire.License;

namespace MailMergeSL
{
    public partial class App : Application
    {
        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            LicenseProvider.SetLicenseKey("your license key in license.elic.xml");
            this.RootVisual = new MainPage();
        }

        private void Application_Exit(object sender, EventArgs e)
        {

        }

        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                String exp = "throw new Error(\"Unhandled Error in Silverlight Application " + errorMsg + "\");";
                HtmlPage.Window.Eval(exp);
            }
            catch (Exception)
            {
            }
        }
    }
}

 Partial Public Class App
    Inherits Application

    public Sub New()
        InitializeComponent()
    End Sub
    
    Private Sub Application_Startup(ByVal o As Object, ByVal e As StartupEventArgs) _
            Handles Me.Startup
        Me.RootVisual = New MainPage()
    End Sub
    
    Private Sub Application_Exit(ByVal o As Object, ByVal e As EventArgs) Handles Me.Exit

    End Sub
    
    Private Sub Application_UnhandledException(ByVal sender As object, _
            ByVal e As ApplicationUnhandledExceptionEventArgs) Handles Me.UnhandledException

        ' If the app is running outside of the debugger then report the exception using
        ' the browser's exception mechanism. On IE this will display it a yellow alert 
        ' icon in the status bar and Firefox will display a script error.
        If Not System.Diagnostics.Debugger.IsAttached Then

            ' NOTE: This will allow the application to continue running after an exception has been thrown
            ' but not handled. 
            ' For production applications this error handling should be replaced with something that will 
            ' report the error to the website and stop the application.
            e.Handled = True
            Deployment.Current.Dispatcher.BeginInvoke( _
                New Action(Of ApplicationUnhandledExceptionEventArgs)(AddressOf ReportErrorToDOM), e)
        End If
    End Sub

   Private Sub ReportErrorToDOM(ByVal e As ApplicationUnhandledExceptionEventArgs)

        Try
            Dim errorMsg As String = e.ExceptionObject.Message + e.ExceptionObject.StackTrace
            errorMsg = errorMsg.Replace(""""c, "'"c).Replace(ChrW(13) & ChrW(10), "\n")

            System.Windows.Browser.HtmlPage.Window.Eval( _
                "throw new Error(""Unhandled Error in Silverlight Application " + errorMsg + """);")
        Catch
        
        End Try
    End Sub
    
End Class

<UserControl x:Class="MailMergeSL.MainPage"
    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"
    mc:Ignorable="d"
    d:DesignHeight="600" d:DesignWidth="400"
             xmlns:dataInput="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input"
             xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls">

    <Grid x:Name="LayoutRoot" Background="#FF003399" Loaded="LayoutRoot_Loaded"
          Width="400" Height="400" HorizontalAlignment="Center" VerticalAlignment="Top">
        <Grid.ColumnDefinitions>
            <ColumnDefinition MaxWidth="70" MinWidth="70" Width="70" />
            <ColumnDefinition MinWidth="300" Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="40" MinHeight="40" />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
            <RowDefinition />
            <RowDefinition Height="30" MaxHeight="30" MinHeight="30" />
        </Grid.RowDefinitions>
        <Button Content="Merge" Height="23" HorizontalAlignment="Right" Margin="0,0,2,0" Name="buttonMerge"
                VerticalAlignment="Center" Width="75" Click="buttonMerge_Click" IsEnabled="False"
                Grid.Row="7" Grid.ColumnSpan="2" />
        <dataInput:Label HorizontalAlignment="Center" Name="labelTitle" VerticalAlignment="Center"
                         Content="Fax Information" Foreground="White" FontWeight="Bold" FontSize="16"
                         Grid.ColumnSpan="2" />
        <dataInput:Label HorizontalAlignment="Left" Name="labelContactName" Foreground="White"
                         Content="To:" VerticalAlignment="Center" FontSize="12"
                         VerticalContentAlignment="Center" Grid.Row="1" FontWeight="Bold" Margin="5,0,0,0" />
        <dataInput:Label HorizontalAlignment="Left" Margin="5,0,0,0" Name="labelFax" Foreground="White"
                         Content="Fax:" FontSize="12" Grid.Row="2" FontWeight="Bold"
                         VerticalAlignment="Center" />
        <dataInput:Label HorizontalAlignment="Left" Margin="5,0,0,0" Name="labelFrom" Foreground="White"
                         Content="From:" FontSize="12" Grid.Row="3" FontWeight="Bold"
                         VerticalAlignment="Center" />
        <dataInput:Label HorizontalAlignment="Left" Margin="5,0,0,0" Name="labelDate" Foreground="White"
                         Content="Date:" FontSize="12" Grid.Row="4" FontWeight="Bold"
                         VerticalAlignment="Center" />
        <dataInput:Label HorizontalAlignment="Left" Margin="5,0,0,0" Name="labelSubject" Foreground="White"
                         Content="Subject:" FontSize="12" Grid.Row="5" FontWeight="Bold"
                         VerticalAlignment="Center" />
        <dataInput:Label HorizontalAlignment="Left" Margin="5,0,0,0" Name="labelContent" Foreground="White"
                         Content="Content:" FontSize="12" Grid.Row="6" FontWeight="Bold"
                         VerticalAlignment="Center" />
        <TextBox Grid.Column="1" Grid.Row="1" HorizontalAlignment="Stretch" Margin="2" Name="textBoxTo"
                 VerticalAlignment="Stretch" VerticalContentAlignment="Center"
                 HorizontalContentAlignment="Left" Text="John Smith" />
        <TextBox Grid.Column="1" Grid.Row="2" HorizontalAlignment="Stretch" Margin="2" Name="textBoxFax"
                 VerticalAlignment="Stretch" VerticalContentAlignment="Center"
                 HorizontalContentAlignment="Left" Text="+1 (69) 123456" />
        <TextBox Grid.Column="1" Grid.Row="3" HorizontalAlignment="Stretch" Margin="2" Name="textBoxFrom"
                 VerticalAlignment="Stretch" VerticalContentAlignment="Center"
                 HorizontalContentAlignment="Left" Text="Harry Hu" />
        <controls:DatePicker Grid.Column="1" Grid.Row="4" Grid.RowSpan="1" HorizontalAlignment="Left"
                             Margin="2" Name="datePickerFaxDate" VerticalAlignment="Stretch"
                             SelectedDate="6/23/2011" />
        <TextBox Grid.Column="1" Grid.Row="5" HorizontalAlignment="Stretch" Margin="2"
                 Name="textBoxSubject" VerticalAlignment="Stretch" VerticalContentAlignment="Center"
                 HorizontalContentAlignment="Left" Text="Order Return Receipt" />
        <TextBox Grid.Column="1" Grid.Row="6" HorizontalAlignment="Stretch" Margin="2"
                 Name="textBoxContent" VerticalAlignment="Stretch"
                 VerticalContentAlignment="Center" HorizontalContentAlignment="Left"
                 AcceptsReturn="True" VerticalScrollBarVisibility="Visible"
                 Text="Dear John Smith,Thank you for your response. We will contact soon you."
                 TextWrapping="Wrap" HorizontalScrollBarVisibility="Auto" />
    </Grid>
</UserControl>

using System;
using System.IO;
using System.Net;
using System.Reflection;
using System.Windows;
using System.Windows.Controls;

using Spire.Doc;

namespace MailMergeSL
{
    public partial class MainPage : UserControl
    {
        private SaveFileDialog saveFileDialog = null;
        private Document documentTemplate = null;
        public MainPage()
        {
            InitializeComponent();
            this.saveFileDialog = new SaveFileDialog();
            this.saveFileDialog.Filter = "Word Document (*.doc)|*.doc";
        }

        private void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
        {
            Uri baseUri = App.Current.Host.Source;
            if ("file" == baseUri.Scheme)
            {
                Assembly assembly = this.GetType().Assembly;
                foreach (String name in assembly.GetManifestResourceNames())
                {
                    if (name.EndsWith(".Fax.doc"))
                    {
                        using (Stream docStream = assembly.GetManifestResourceStream(name))
                        {
                            this.documentTemplate = new Document(docStream, FileFormat.Doc);
                        }
                        this.buttonMerge.IsEnabled = true;
                    }
                }
            }
            else
            {
                Uri docUri = new Uri(baseUri, "../Fax.doc");

                WebClient webClient = new WebClient();
                webClient.AllowReadStreamBuffering = true;
                webClient.OpenReadAsync(docUri);
                webClient.OpenReadCompleted +=
                    delegate(object eventSender, OpenReadCompletedEventArgs eventArgs)
                {
                    using (Stream docStream = eventArgs.Result)
                    {
                        this.documentTemplate = new Document(docStream, FileFormat.Doc);
                    }
                    this.buttonMerge.IsEnabled = true;
                };
            }
        }

        private void buttonMerge_Click(object sender, RoutedEventArgs e)
        {
            String[] fieldNames
                = new String[] { "Contact Name", "Fax", "From", "Date", "Subject", "Content" };
            DateTime faxDate
                = this.datePickerFaxDate.SelectedDate.HasValue ? 
                    this.datePickerFaxDate.SelectedDate.Value : DateTime.Now;
            String[] fieldValues
                = new String[] 
                {
                    this.textBoxTo.Text,
                    this.textBoxFax.Text,
                    this.textBoxFrom.Text,
                    faxDate.ToShortDateString(),
                    this.textBoxSubject.Text,
                    this.textBoxContent.Text
                };
            this.documentTemplate.MailMerge.Execute(fieldNames, fieldValues);

            bool? result = this.saveFileDialog.ShowDialog();
            if (result.HasValue && result.Value)
            {
                using (Stream stream = this.saveFileDialog.OpenFile())
                {
                    this.documentTemplate.SaveToStream(stream, FileFormat.Doc);
                }
            }
        }
    }
}

Imports System
Imports System.IO
Imports System.Net
Imports System.Reflection
Imports System.Windows
Imports System.Windows.Controls

Imports Spire.Doc

Partial Public Class MainPage
    Inherits UserControl

    Private saveFileDialog As SaveFileDialog
    Private documentTemplate As Document

    Private WithEvents webClient As WebClient

    Public Sub New()
        InitializeComponent()
        Me.saveFileDialog = New SaveFileDialog()
        Me.saveFileDialog.Filter = "Word Document (*.doc)|*.doc"
    End Sub

    Private Sub LayoutRoot_Loaded(ByVal sender As System.Object, _
            ByVal e As System.Windows.RoutedEventArgs)
        Dim baseUri As Uri = App.Current.Host.Source
        If "file" = baseUri.Scheme Then
            Dim assembly As Assembly = Me.[GetType]().Assembly
            For Each name As [String] In assembly.GetManifestResourceNames()
                If name.EndsWith(".Fax.doc") Then
                    Using docStream As Stream = assembly.GetManifestResourceStream(name)
                        Me.documentTemplate = New Document(docStream, FileFormat.Doc)
                    End Using
                    Me.buttonMerge.IsEnabled = True
                End If
            Next
        Else
            Dim docUri As New Uri(baseUri, "../Fax.doc")

            webClient = New WebClient()
            webClient.AllowReadStreamBuffering = True
            webClient.OpenReadAsync(docUri)
        End If
    End Sub

    Private Sub DownloadFileCompleted(ByVal sender As Object, _
            ByVal e As OpenReadCompletedEventArgs) Handles webClient.OpenReadCompleted
        Using docStream As Stream = e.Result
            Me.documentTemplate = New Document(docStream, FileFormat.Doc)
        End Using
        Me.buttonMerge.IsEnabled = True
    End Sub

    Private Sub buttonMerge_Click(ByVal sender As System.Object, _
            ByVal e As System.Windows.RoutedEventArgs)
        Dim fieldNames As [String]() = _
            New [String]() {"Contact Name", "Fax", "From", "Date", "Subject", "Content"}
        Dim faxDate As DateTime = DateTime.Now
        If Me.datePickerFaxDate.SelectedDate.HasValue Then
            faxDate = Me.datePickerFaxDate.SelectedDate.Value
        End If

        Dim fieldValues As [String]() = _
            New [String]() {Me.textBoxTo.Text, Me.textBoxFax.Text, Me.textBoxFrom.Text, _
                            faxDate.ToShortDateString(), Me.textBoxSubject.Text, Me.textBoxContent.Text}
        Me.documentTemplate.MailMerge.Execute(fieldNames, fieldValues)

        Dim result As System.Nullable(Of Boolean) = Me.saveFileDialog.ShowDialog()
        If result.HasValue AndAlso result.Value Then
            Using stream As Stream = Me.saveFileDialog.OpenFile()
                Me.documentTemplate.SaveToStream(stream, FileFormat.Doc)
            End Using
        End If
    End Sub
End Class