/V4/Quickstarts/State-Based Navigation/State-Based Navigation/Views/SendMessageChildWindow.xaml

<controls:ChildWindow

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 

    xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"

    xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions" 

    xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 

    xmlns:System="clr-namespace:System;assembly=mscorlib" 

    x:Name="childWindow" 

    x:Class="StateBasedNavigation.Views.SendMessageChildWindow"

    Width="400" Height="300" AutomationProperties.AutomationId="SendMessageChildWindow">

    <i:Interaction.Triggers>

        <ei:PropertyChangedTrigger Binding="{Binding Result}">

            <ei:ChangePropertyAction TargetObject="{Binding ElementName=childWindow}" PropertyName="DialogResult" Value="{Binding Result}"/>

        </ei:PropertyChangedTrigger>

    </i:Interaction.Triggers>



    <controls:ChildWindow.Title>

        <TextBlock><Run Text="Send message to "/><Run Text="{Binding Contact.Name}"/></TextBlock>

    </controls:ChildWindow.Title>



    <Grid x:Name="LayoutRoot" Margin="2">



        <ContentControl 

            x:Name="UserInput"

            HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch">



            <Grid>

                <Grid.RowDefinitions>

                    <RowDefinition />

                    <RowDefinition Height="Auto" />

                </Grid.RowDefinitions>



                <TextBox 

                    Text="{Binding Message, Mode=TwoWay}"

                    HorizontalAlignment="Stretch" Margin="12,12,12,12" VerticalAlignment="Stretch" AutomationProperties.AutomationId="TextBoxMessage"/>



                <Button x:Name="CancelButton" Content="Cancel" Width="75" Height="23" HorizontalAlignment="Right" Margin="0,12,0,0" Grid.Row="1" >

                    <i:Interaction.Triggers>

                        <i:EventTrigger EventName="Click">

                            <ei:ChangePropertyAction TargetObject="{Binding}" PropertyName="Result" Value="False"/>

                        </i:EventTrigger>

                    </i:Interaction.Triggers>

                </Button>

                <Button x:Name="OKButton" Content="OK" Width="75" Height="23" HorizontalAlignment="Right" Margin="0,12,79,0" Grid.Row="1" >

                    <i:Interaction.Triggers>

                        <i:EventTrigger EventName="Click">

                            <ei:ChangePropertyAction TargetObject="{Binding}" PropertyName="Result" Value="True"/>

                        </i:EventTrigger>

                    </i:Interaction.Triggers>

                </Button>

            </Grid>

        </ContentControl>



    </Grid>

</controls:ChildWindow>